[Bug libstdc++/40974] cannot build gcc-4.4.1: fenv_t has not been declared
--- Comment #35 from paolo dot carlini at oracle dot com 2010-08-02 06:53 --- Thanks a lot Armand (by the way, many thanks to Ralf too) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40974
[Bug fortran/45161] ICE on gfortran.dg/typebound_proc_16.f03 with -std=f2003
--- Comment #1 from janus at gcc dot gnu dot org 2010-08-02 06:56 --- Probably related to PR 44584. -- janus at gcc dot gnu dot org changed: What|Removed |Added CC||janus at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45161
[Bug tree-optimization/45144] SRA optimization issue of bit-field
-- ramana at gcc dot gnu dot org changed: What|Removed |Added Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Keywords||missed-optimization Last reconfirmed|-00-00 00:00:00 |2010-08-02 07:54:22 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45144
[Bug middle-end/45098] Missed induction variable optimization
-- ramana at gcc dot gnu dot org changed: What|Removed |Added Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Keywords||missed-optimization Last reconfirmed|-00-00 00:00:00 |2010-08-02 07:55:00 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45098
[Bug bootstrap/45162] New: [4.6 regression] ARM bootstrap comparison failures after stage 3
Attempting to bootstrap gcc-4.6-20100731 (r162788) on armv5tel-linux-gnueabi fails due to bootstrap comparison failures after stage 3: make[3]: Leaving directory `/home/mikpe/objdir46' Comparing stages 2 and 3 warning: gcc/cc1plus-checksum.o differs warning: gcc/cc1-checksum.o differs warning: gcc/cc1objplus-checksum.o differs warning: gcc/cc1obj-checksum.o differs Bootstrap comparison failure! gcc/lto-cgraph.o differs gcc/value-prof.o differs gcc/tree-vect-data-refs.o differs gcc/expr.o differs gcc/tree-ssa-loop-ivopts.o differs gcc/lto-streamer-out.o differs gcc/stor-layout.o differs gcc/tree-ssa-loop-ivcanon.o differs gcc/loop-iv.o differs gcc/double-int.o differs gcc/expmed.o differs gcc/dbxout.o differs gcc/tree.o differs gcc/sreal.o differs gcc/cfgloopanal.o differs gcc/explow.o differs libcpp/expr.o differs make[2]: *** [compare] Error 1 make[2]: Leaving directory `/home/mikpe/objdir46' make[1]: *** [stage3-bubble] Error 2 make[1]: Leaving directory `/home/mikpe/objdir46' make: *** [bootstrap] Error 2 Target: armv5tel-brewer-linux-gnueabi Configured with: /home/mikpe/gcc-4.6-20100731/configure --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-languages=c,c++,objc,obj-c++,java,fortran --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --disable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --disable-sjlj-exceptions --with-arch=armv5te --with-tune=xscale --build=armv5tel-brewer-linux-gnueabi --with-gmp=/home/mikpe/pkgs/linux-armv5l/gmp-4.3.2 --with-mpfr=/home/mikpe/pkgs/linux-armv5l/mpfr-2.4.2 --with-mpc=/home/mikpe/pkgs/linux-armv5l/mpc-0.8.2 --disable-plugin --disable-lto --disable-libmudflap -- Summary: [4.6 regression] ARM bootstrap comparison failures after stage 3 Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: mikpe at it dot uu dot se GCC build triplet: armv5tel-unknown-linux-gnueabi GCC host triplet: armv5tel-unknown-linux-gnueabi GCC target triplet: armv5tel-unknown-linux-gnueabi http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45162
[Bug driver/45163] New: -save-temps=obj does not work correctly
Assume there is a directory foo in the current directory and there is a foo.c in ./foo , I saw this on 4.5.1 $ gcc-4.5 -fdump-tree-optimized -save-temps=obj foo/foo.c -S -o foo/foo.s foo/foo.c: In function foo: foo/foo.c:1:6: error: could not open dump file foo/foo/foo.140t.optimized: No such file or directory -- Summary: -save-temps=obj does not work correctly Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: driver AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: jiez at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45163
[Bug driver/45163] -save-temps=obj does not work correctly with -fdum-tree- options
--- Comment #1 from jiez at gcc dot gnu dot org 2010-08-02 08:43 --- Make the summary more specific. -- jiez at gcc dot gnu dot org changed: What|Removed |Added Summary|-save-temps=obj does not|-save-temps=obj does not |work correctly |work correctly with -fdum- ||tree- options http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45163
[Bug target/40457] use stm and ldm to access consecutive memory words
--- Comment #12 from bernds at gcc dot gnu dot org 2010-08-02 10:07 --- Subject: Bug 40457 Author: bernds Date: Mon Aug 2 10:06:47 2010 New Revision: 162815 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=162815 Log: PR target/40457 * config/arm/arm.h (arm_regs_in_sequence): Declare. * config/arm/arm-protos.h (emit_ldm_seq, emit_stm_seq, load_multiple_sequence, store_multiple_sequence): Delete declarations. (arm_gen_load_multiple, arm_gen_store_multiple): Adjust declarations. * config/arm/ldmstm.md: New file. * config/arm/arm.c (arm_regs_in_sequence): New array. (load_multiple_sequence): Now static. New args SAVED_ORDER, CHECK_REGS. All callers changed. If SAVED_ORDER is nonnull, copy the computed order into it. If CHECK_REGS is false, don't sort REGS. Handle Thumb mode. (store_multiple_sequence): Now static. New args NOPS_TOTAL, SAVED_ORDER, REG_RTXS and CHECK_REGS. All callers changed. If SAVED_ORDER is nonnull, copy the computed order into it. If CHECK_REGS is false, don't sort REGS. Set up REG_RTXS just like REGS. Handle Thumb mode. (arm_gen_load_multiple_1): New function, broken out of arm_gen_load_multiple. (arm_gen_store_multiple_1): New function, broken out of arm_gen_store_multiple. (arm_gen_multiple_op): New function, with code from arm_gen_load_multiple and arm_gen_store_multiple moved here. (arm_gen_load_multiple, arm_gen_store_multiple): Now just wrappers around arm_gen_multiple_op. Remove argument UP, all callers changed. (gen_ldm_seq, gen_stm_seq, gen_const_stm_seq): New functions. * config/arm/predicates.md (commutative_binary_operator): New. (load_multiple_operation, store_multiple_operation): Handle more variants of these patterns with different starting offsets. Handle Thumb-1. * config/arm/arm.md: Include ldmstm.md. (ldmsi_postinc4, ldmsi_postinc4_thumb1, ldmsi_postinc3, ldmsi_postinc2, ldmsi4, ldmsi3, ldmsi2, stmsi_postinc4, stmsi_postinc4_thumb1, stmsi_postinc3, stmsi_postinc2, stmsi4, stmsi3, stmsi2 and related peepholes): Delete. * config/arm/ldmstm.md: New file. * config/arm/arm-ldmstm.ml: New file. testsuite/ PR target/40457 * gcc.target/arm/pr40457-1.c: New test. * gcc.target/arm/pr40457-2.c: New test. Added: trunk/gcc/config/arm/arm-ldmstm.ml trunk/gcc/config/arm/ldmstm.md trunk/gcc/testsuite/gcc.target/arm/pr40457-1.c trunk/gcc/testsuite/gcc.target/arm/pr40457-2.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/arm/arm-protos.h trunk/gcc/config/arm/arm.c trunk/gcc/config/arm/arm.h trunk/gcc/config/arm/arm.md trunk/gcc/config/arm/predicates.md trunk/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40457
[Bug bootstrap/45162] [4.6 regression] ARM bootstrap comparison failures after stage 3
-- rguenth at gcc dot gnu dot org changed: What|Removed |Added Target Milestone|--- |4.6.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45162
[Bug fortran/45159] Unneccessary temporaries
--- Comment #5 from dominiq at lps dot ens dot fr 2010-08-02 11:41 --- As pointed out by Dominique, one needs to be careful. I think one can optimize: c = matmul(b, transpose(c)) c = matmul(c,b) where c is a rank-2 matrix. I think one cannot optimize it if c is just a vector. (Add conj as you wish.) And check whether I have not confused columns and rows So far I have never seen a product matrix*matrix done in place and I seriously doubt it can be done. The best I can see is to have a temporary of rank 1 only instead of the full matrix. In addition roughly speaking the matrix product is O(n**3) while the cost of the temporary is O(n**2), probably negligible for large matrices (for small matrices calling the present matmul is much slower than any other possible algorithm). Note also that the polyhedron test nf.f90 is compiled with unnecessary temporaries: [macbook] lin/test% gfc -Warray-temporaries nf.f90 nf.f90:293.30: if ( ii1 ) x(i:i+nxy-1) = x(i:i+nxy-1) - au3(i-nxy:i-1)*x(i-nxy:i-1) 1 Warning: Creating array temporary at (1) nf.f90:280.21: g(i:i+nxy-1) = g(i:i+nxy-1) - au3(i-nxy:i-1)*g(i-nxy:i-1) 1 Warning: Creating array temporary at (1) nf.f90:261.29: if ( ii1 ) x(i:i+nx-1) = x(i:i+nx-1) - au2(i-nx:i-1)*x(i-nx:i-1) 1 Warning: Creating array temporary at (1) nf.f90:248.20: g(i:i+nx-1) = g(i:i+nx-1) - au2(i-nx:i-1)*g(i-nx:i-1) 1 Warning: Creating array temporary at (1) i.e., disjoint sections are not spotted. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45159
[Bug tree-optimization/44328] switch/case optimization produces an invalid lookup table index
--- Comment #24 from ian dot bolton at arm dot com 2010-08-02 12:23 --- (In reply to comment #23) I can confirm this fails with GCC 4.4.4 and that GCC 4.3.2 works. I get no warning and correct code in latest 4.4 branch (4.4.5 - 20100727), but I do get the warning and incorrect code in latest 4.5 branch (4.5.1 - 20100727). -- ian dot bolton at arm dot com changed: What|Removed |Added CC||ian dot bolton at arm dot ||com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44328
[Bug fortran/45159] Unneccessary temporaries
--- Comment #6 from burnus at gcc dot gnu dot org 2010-08-02 12:41 --- (In reply to comment #5) As pointed out by Dominique, one needs to be careful. I think one can optimize: c = matmul(b, transpose(c)) c = matmul(c,b) where c is a rank-2 matrix. I think one cannot optimize it if c is just a vector. (Add conj as you wish.) And check whether I have not confused columns and rows So far I have never seen a product matrix*matrix done in place and I seriously doubt it can be done. The best I can see is to have a temporary of rank 1 I fail to see why a scalar temporary is not enough: do j = 1, N do i = 1, N tmp = 0.0 do k = 1, N tmp = a(i,k)*b(k,j) end do a(i,j) = tmp end do end do Note: it won't work with a scalar if one reverses the i and the j loop. [It would work with a rank-1 B argument, but then A = matmul(B,A) won't work as the result is a rank-1 array ...] Note also that the polyhedron test nf.f90 is compiled with unnecessary temporaries: My feeling is that ONE, THREE (of comment 0), FIVE (of comment 1), and your example (comment 5) point all to the same dependency-analysis problem. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45159
[Bug inline-asm/45160] [4.4.x/4.5.x regression] Invalid assembly code is generated for x86 architecture for faad2 library (AAC decode algorithm)
--- Comment #3 from t dot artem at mailcity dot com 2010-08-02 13:09 --- I've just tested GCC 4.5.1 and it also miscompiles the source code. -- t dot artem at mailcity dot com changed: What|Removed |Added Summary|[GCC 4.4.x regression] |[4.4.x/4.5.x regression] |Invalid assembly code is|Invalid assembly code is |generated for x86 |generated for x86 |architecture for faad2 |architecture for faad2 |library (AAC decode |library (AAC decode |algorithm) |algorithm) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45160
[Bug inline-asm/45160] [4.4.x/4.5.x regression] Invalid assembly code is generated for x86 architecture for faad2 library (AAC decode algorithm)
--- Comment #4 from t dot artem at mailcity dot com 2010-08-02 13:10 --- Created an attachment (id=21369) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21369action=view) faad2 2.7.0 complete sources with -save-temps for GCC 4.5.1 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45160
[Bug inline-asm/45160] [4.4.x/4.5.x regression] Invalid assembly code is generated for x86 architecture for faad2 library (AAC decode algorithm)
--- Comment #5 from t dot artem at mailcity dot com 2010-08-02 13:15 --- I've found the culprit (or better say mplayer developer hinted), it is -fstrict-aliasing optimization. With -fno-strict-aliasing GCC 4.4.x and 4.5.x produce proper code. Please, advise. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45160
[Bug fortran/45131] [4.6 regression] New Fortran test failures
--- Comment #14 from jvdelisle at gcc dot gnu dot org 2010-08-02 13:19 --- Closing as fixed. Regarding comment #7. I do not see the problem on 4.5. I reran tests here on my machine that failed with 4.6 and there were no failures on 4.5 -- jvdelisle at gcc dot gnu dot org changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45131
[Bug tree-optimization/44914] [4.6 Regression] ICE: in calc_dfs_tree, at dominance.c:395 with -fipa-sra -fnon-call-exceptions
--- Comment #7 from jamborm at gcc dot gnu dot org 2010-08-02 13:28 --- (In reply to comment #6) Is there a patch for 4.5.1 for this somewhere? I'm hitting this issue at gcc 4.5.1 java boostrap (#45154) The patch is really the same. I did not commit it because the branch was frozen for the release of 4.5.1. I'm re-testing it on the branch now and hopefully will commit it today. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44914
[Bug tree-optimization/44328] switch/case optimization produces an invalid lookup table index
--- Comment #25 from ian dot bolton at arm dot com 2010-08-02 13:33 --- (In reply to comment #24) (In reply to comment #23) I can confirm this fails with GCC 4.4.4 and that GCC 4.3.2 works. I get no warning and correct code in latest 4.4 branch (4.4.5 - 20100727), but I do get the warning and incorrect code in latest 4.5 branch (4.5.1 - 20100727). And trunk, as of 20100727 (4.6.0), is also OK (no warning and correct code). I am configuring with: --target=arm-unknown-eabi --with-cpu=cortex-a9 --enable-languages=c,c++ And building with: -c -O2 -mcpu=arm926ej-s -x c++ ~/pr44328.cpp -Wextra -save-temps -S -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44328
[Bug fortran/45159] Unneccessary temporaries
--- Comment #7 from dominiq at lps dot ens dot fr 2010-08-02 13:39 --- I fail to see why a scalar temporary is not enough: do j = 1, N do i = 1, N tmp = 0.0 do k = 1, N tmp = a(i,k)*b(k,j) end do a(i,j) = tmp end do end do Note: it won't work with a scalar if one reverses the i and the j loop. Well, try: real :: a(3,3), b(3,3), c(3,3), tmp integer :: i, j, k, N=3 a = reshape([(i,i=1,9)],[3,3]) b = reshape([(10-i,i=1,9)],[3,3]) c = matmul(a, b) do j = 1, N do i = 1, N tmp = 0.0 do k = 1, N tmp = tmp + a(i,k)*b(k,j) end do a(i,j) = tmp end do end do print *, a print *, c if(any(a/=c)) call abort() print *, 'OK' end The problem is that in order to compute a(1,2) you need a(1,1)*b(1,2), so you cannot have already written a(1,1). Note that the effective way to compute the matrix product on modern CPUs is to exchange the i and k loops and use a rank 1 tmp: real :: a(3,3), b(3,3), c(3,3), tmp(3) integer :: i, j, k, N=3 a = reshape([(i,i=1,9)],[3,3]) b = reshape([(10-i,i=1,9)],[3,3]) c = matmul(a, b) do j = 1, N tmp = 0.0 do k = 1, N do i = 1, N tmp(i) = tmp(i) + a(i,k)*b(k,j) end do end do b(:,j) = tmp end do if(any(b/=c)) call abort() print *, 'OK' end and this work with a rank 1 temporary. If one want to enter this kind of reduced temporaries, another candidate is a=transpose(a) which requires a scalar temporary only. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45159
[Bug fortran/45159] Unnecessary temporaries
--- Comment #8 from burnus at gcc dot gnu dot org 2010-08-02 14:10 --- (In reply to comment #7) I fail to see why a scalar temporary is not enough: Well, try: I concede defeat. If one want to enter this kind of reduced temporaries, another candidate is a=transpose(a) which requires a scalar temporary only. Well, with an array descriptor it one only changes the strides/bounds ... -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45159
[Bug inline-asm/45160] [4.4.x/4.5.x regression] Invalid assembly code is generated for x86 architecture for faad2 library (AAC decode algorithm)
--- Comment #6 from rguenth at gcc dot gnu dot org 2010-08-02 14:12 --- Why CC me? I have no clue about faad2, the strict-aliasing thing hints at errors in faad2, not gcc. -- rguenth at gcc dot gnu dot org changed: What|Removed |Added CC|rguenth at gcc dot gnu dot | |org | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45160
[Bug fortran/45159] Unnecessary temporaries
--- Comment #9 from dominiq at lps dot ens dot fr 2010-08-02 14:36 --- Well, with an array descriptor it one only changes the strides/bounds ... From polyhedron test induct.f90 [macbook] lin/test% gfc -Warray-temporaries induct.f90 induct.f90:1629.20: rotate_quad = transpose(rotate_quad) 1 Warning: Creating array temporary at (1) induct.f90:1741.20: rotate_quad = transpose(rotate_quad) 1 Warning: Creating array temporary at (1) induct.f90:2016.20: rotate_quad = transpose(rotate_quad) 1 Warning: Creating array temporary at (1) induct.f90:2159.20: rotate_quad = transpose(rotate_quad) 1 Warning: Creating array temporary at (1) induct.f90:2509.24: rotate1 = transpose(rotate1) 1 Warning: Creating array temporary at (1) induct.f90:2560.24: rotate2 = transpose(rotate2) 1 Warning: Creating array temporary at (1) induct.f90:2702.24: rotate2 = transpose(rotate2) 1 Warning: Creating array temporary at (1) induct.f90:2845.24: rotate1 = transpose(rotate1) 1 Warning: Creating array temporary at (1) induct.f90:2896.24: rotate2 = transpose(rotate2) 1 Warning: Creating array temporary at (1) induct.f90:3038.24: rotate2 = transpose(rotate2) 1 Warning: Creating array temporary at (1) The same trick can probably used for RESHAPE, from capacita.f90 ... Warning: Creating array temporary at (1) capacita.f90:137.30: maxval(abs( reshape(Ar1,(/Ng1,Ng2/)) - Y )) 1 Warning: Creating array temporary at (1) capacita.f90:137.30: maxval(abs( reshape(Ar1,(/Ng1,Ng2/)) - Y )) 1 Warning: Creating array temporary at (1) capacita.f90:137.18: maxval(abs( reshape(Ar1,(/Ng1,Ng2/)) - Y )) 1 Warning: Creating array temporary at (1) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45159
[Bug bootstrap/45162] [4.6 regression] ARM bootstrap comparison failures after stage 3
--- Comment #1 from ramana at gcc dot gnu dot org 2010-08-02 14:55 --- Confirmed. My bootstrap with thumb2 and armv7-a failed as well. Here's the configuration line . I only see a comparison failure with tree-vect-data-refs.o in this configuration. Configured with: /home/ramrad01/sources//trunk/configure --prefix=/home/ramrad01/install-nightlies/install-trunk-162814 --enable-languages=c,c++,fortran --enable-__cxa_atexit --disable-nls --enable-threads=posix --disable-multilib --with-arch=armv7-a --with-mode=thumb --with-float=softfp --with-fpu=vfpv3-d16 -- ramana at gcc dot gnu dot org changed: What|Removed |Added Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Last reconfirmed|-00-00 00:00:00 |2010-08-02 14:55:47 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45162
[Bug bootstrap/45162] [4.6 regression] ARM bootstrap comparison failures after stage 3
--- Comment #2 from ramana at gcc dot gnu dot org 2010-08-02 14:58 --- Created an attachment (id=21370) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21370action=view) Disassembly and object files that are different with the thumb2 bootstrap Disassembly and object files in this case. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45162
[Bug fortran/44064] [OOP] ICE with file containing two modules and one program
--- Comment #10 from mikael at gcc dot gnu dot org 2010-08-02 15:31 --- Subject: Bug 44064 Author: mikael Date: Mon Aug 2 15:30:47 2010 New Revision: 162821 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=162821 Log: 2010-08-02 Mikael Morin mik...@gcc.gnu.org Janus Weil ja...@gcc.gnu.org PR fortran/42051 PR fortran/44064 PR fortran/45151 * intrinsic.c (gfc_get_intrinsic_sub_symbol): Commit changed symbol. * symbol.c (gen_cptr_param, gen_fptr_param, gen_shape_param, gfc_copy_formal_args, gfc_copy_formal_args_intr, gfc_copy_formal_args_ppc, generate_isocbinding_symbol): Ditto. * parse.c (parse_derived_contains, parse_spec, parse_progunit): Call reject_statement in case of error. (match_deferred_characteritics): Call gfc_undo_symbols in case match fails. Modified: trunk/gcc/fortran/ChangeLog trunk/gcc/fortran/intrinsic.c trunk/gcc/fortran/parse.c trunk/gcc/fortran/symbol.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44064
[Bug fortran/45151] [4.6 regression] New Fortran failuires
--- Comment #11 from mikael at gcc dot gnu dot org 2010-08-02 15:31 --- Subject: Bug 45151 Author: mikael Date: Mon Aug 2 15:30:47 2010 New Revision: 162821 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=162821 Log: 2010-08-02 Mikael Morin mik...@gcc.gnu.org Janus Weil ja...@gcc.gnu.org PR fortran/42051 PR fortran/44064 PR fortran/45151 * intrinsic.c (gfc_get_intrinsic_sub_symbol): Commit changed symbol. * symbol.c (gen_cptr_param, gen_fptr_param, gen_shape_param, gfc_copy_formal_args, gfc_copy_formal_args_intr, gfc_copy_formal_args_ppc, generate_isocbinding_symbol): Ditto. * parse.c (parse_derived_contains, parse_spec, parse_progunit): Call reject_statement in case of error. (match_deferred_characteritics): Call gfc_undo_symbols in case match fails. Modified: trunk/gcc/fortran/ChangeLog trunk/gcc/fortran/intrinsic.c trunk/gcc/fortran/parse.c trunk/gcc/fortran/symbol.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45151
[Bug fortran/42051] [OOP] ICE on array-valued function with CLASS formal argument
--- Comment #21 from mikael at gcc dot gnu dot org 2010-08-02 15:31 --- Subject: Bug 42051 Author: mikael Date: Mon Aug 2 15:30:47 2010 New Revision: 162821 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=162821 Log: 2010-08-02 Mikael Morin mik...@gcc.gnu.org Janus Weil ja...@gcc.gnu.org PR fortran/42051 PR fortran/44064 PR fortran/45151 * intrinsic.c (gfc_get_intrinsic_sub_symbol): Commit changed symbol. * symbol.c (gen_cptr_param, gen_fptr_param, gen_shape_param, gfc_copy_formal_args, gfc_copy_formal_args_intr, gfc_copy_formal_args_ppc, generate_isocbinding_symbol): Ditto. * parse.c (parse_derived_contains, parse_spec, parse_progunit): Call reject_statement in case of error. (match_deferred_characteritics): Call gfc_undo_symbols in case match fails. Modified: trunk/gcc/fortran/ChangeLog trunk/gcc/fortran/intrinsic.c trunk/gcc/fortran/parse.c trunk/gcc/fortran/symbol.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42051
[Bug inline-asm/45160] [4.4.x/4.5.x regression] Invalid assembly code is generated for x86 architecture for faad2 library (AAC decode algorithm)
--- Comment #7 from t dot artem at mailcity dot com 2010-08-02 15:49 --- (In reply to comment #6) Why CC me? I have no clue about faad2, the strict-aliasing thing hints at errors in faad2, not gcc. Richard, I don't know who is who amongst GCC developers, but you are a prominent person, so I thought you know someone who can help shed light on this issue. Like I said GCC 4.2.x has no problems compiling this library, so I have no idea who to blame and who else I should get in touch with. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45160
[Bug inline-asm/45160] [4.4.x/4.5.x regression] Invalid assembly code is generated for x86 architecture for faad2 library (AAC decode algorithm)
--- Comment #8 from pinskia at gcc dot gnu dot org 2010-08-02 16:21 --- Like I said GCC 4.2.x has no problems compiling this library, so I have no idea who to blame and who else I should get in touch with. I would get into contact with the developers of the library first. Yes GCC has some bugs but the library could have a bug still. Since the problem disappreas with -fno-strict-aliasing that normally points at a bug in the library. In that it does not follow the C/C++ alisaing rules. -- pinskia at gcc dot gnu dot org changed: What|Removed |Added Status|UNCONFIRMED |WAITING http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45160
[Bug bootstrap/45118] No rule to make target `.deps/affinity.Plo'
--- Comment #1 from rwild at gcc dot gnu dot org 2010-08-02 16:40 --- Is this a transient failure with parallel make, i.e., are you using parallel make, and does the failure go away with a serial make or another parallel make invocation? Which -jN option do you pass? Have you seen this failure happen more than once, and if yes, how likely can you reproduce it? Please also show how you configured your build, and please also post the exact error lines spewed out by 'make' that you trimmed from the end. They can give valuable clues as to whether some serialization is missing in the toplevel Makefile (should all-target-libgfortran depend on all-target-libgomp?) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45118
[Bug c/45164] New: -O3 optimization problematic on long long types near 64 bit wraparound
Here is a small test case, with output and version information in the comments.
There are enough ways of stating this problem that it was not evident to me
within the existing bug list. One skilled in the art would know if this is a
duplicate.
I'm not sure where to upload my .i file, so I will try to attach it a few
minutes after I post this.
---
/*
* Illustration of GCC bug
* Marc W. Abel, August 2, 2010
*
* gcc version information follows
*
* Using built-in specs.
* Target: x86_64-linux-gnu
* Configured with: ../src/configure -v --with-pkgversion='Ubuntu
4.4.3-4ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared
--enable-multiarch --enable-linker-build-id --with-system-zlib
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls
--enable-clocale=gnu --enable-libstdcxx-debug --enable-plugin --enable-objc-gc
--disable-werror --with-arch-32=i486 --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
* Thread model: posix
* gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5)
*
*
* Invocation and correct output (using -O2):
*
* $ gcc -O2 o3bug.c ./a.out | head -n 6
* 7ffd fd7f
* 7ffe fe7f
* 7fff ff7f
* 8000 0080
* 8001 0180
* 8002 0280
*
* Invocation and incorrect output (using -O3):
*
* $ gcc -O3 o3bug.c ./a.out | head -n 6
* 7ffd fd7f
* 7ffe fe7f
* 7fff ff7f
* 8000 1007f
* 8001 1017f
* 8002 1027f
*/
#include stdio.h
/*
* Convert an integer into an eight-byte format for persistance, LSB first.
*/
static void int_to_persist(unsigned char *eight_bytes, long long n)
{
int i;
for (i=0; i8; i++, n = 8)
eight_bytes[i] = n 255u;
}
int main(int argc, char *argv[])
{
unsigned char bytes[8];
int i;
long long m;
for (m = 0x7ffdLL; ; ++m) {
printf(%llx , m);
int_to_persist(bytes, m);
for (i=0; i8; i++)
printf(%02x, bytes[i]);
printf(\n);
}
}
--
Summary: -O3 optimization problematic on long long types near
64 bit wraparound
Product: gcc
Version: 4.4.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: robots at marcabel dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45164
[Bug c/45164] -O3 optimization problematic on long long types near 64 bit wraparound
--- Comment #1 from robots at marcabel dot com 2010-08-02 16:47 --- Created an attachment (id=21371) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21371action=view) Preprocessor output / compiler input -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45164
[Bug c/45164] -O3 optimization problematic on long long types near 64 bit wraparound
--- Comment #2 from robots at marcabel dot com 2010-08-02 16:48 --- Created an attachment (id=21372) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21372action=view) Source code to produce in case it doesn't paste well from my initial report. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45164
[Bug c/45164] -O3 optimization problematic on long long types near 64 bit wraparound
--- Comment #3 from pinskia at gcc dot gnu dot org 2010-08-02 16:48 --- Signed overflow is undefined; use either unsigned or -fwrapv to get the behavior you want. -- pinskia at gcc dot gnu dot org changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution||INVALID http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45164
[Bug fortran/36854] [meta] fortran front-end optimization
--- Comment #5 from tkoenig at gcc dot gnu dot org 2010-08-02 16:54 --- Subject: Bug 36854 Author: tkoenig Date: Mon Aug 2 16:53:51 2010 New Revision: 162824 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=162824 Log: 2010-08-02 Thomas Koenig tkoe...@gcc.gnu.org PR fortran/36854 * dependency.h: Add prototype for gfc_are_identical_variables. * frontend-passes.c: Include depencency.h. (optimimize_equality): Use gfc_are_identical_variables. * dependency.c (identical_array_ref): New function. (gfc_are_identical_variables): New function. (gfc_deb_compare_expr): Use gfc_are_identical_variables. * dependency.c (gfc_check_section_vs_section). Rename gfc_ prefix from statc function. (check_section_vs_section): Change arguments to gfc_array_ref, adjust function body accordingly. 2010-08-02 Thomas Koenig tkoe...@gcc.gnu.org PR fortran/36854 * gfortran.dg/character_comparison_2.f90: New test. * gfortran.dg/character_comparison_3.f90: New test. * gfortran.dg/dependency_28.f90: New test. Added: trunk/gcc/testsuite/gfortran.dg/character_comparison_2.f90 trunk/gcc/testsuite/gfortran.dg/character_comparison_3.f90 trunk/gcc/testsuite/gfortran.dg/dependency_28.f90 Modified: trunk/gcc/fortran/ChangeLog trunk/gcc/fortran/dependency.c trunk/gcc/fortran/dependency.h trunk/gcc/fortran/frontend-passes.c trunk/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
[Bug c/45164] -O3 optimization problematic on long long types near 64 bit wraparound
--- Comment #4 from robots at marcabel dot com 2010-08-02 16:54 --- Confirmed resolved invalid. Thank you! -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45164
[Bug libfortran/45165] New: unix.c:fallback_access() leaks file descriptors
fd's are opened but never closed. -- Summary: unix.c:fallback_access() leaks file descriptors Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libfortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: jb at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45165
[Bug tree-optimization/41089] [4.5/4.6 Regression] stdarg pass produces wrong code
--- Comment #48 from ubizjak at gmail dot com 2010-08-02 17:12 --- Patch at http://gcc.gnu.org/ml/gcc-patches/2010-08/msg00021.html. -- ubizjak at gmail dot com changed: What|Removed |Added URL||http://gcc.gnu.org/ml/gcc- ||patches/2010- ||08/msg00021.html http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41089
[Bug driver/45166] New: gcc -MD misses multiple command line source files
When multiple .c (.cpp?) files are mentioned on the command line, GCC places
only a single one in the MD output:
$ echo int main() { return 0; } a.c
$ echo int foo() { return 0; } b.c
$ gcc -MD a.c b.c
$ cat a.d
a.o: a.c
b.c was lost, but should be listed.
--
Summary: gcc -MD misses multiple command line source files
Product: gcc
Version: 4.4.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: driver
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: wsnyder at wsnyder dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45166
[Bug bootstrap/45118] No rule to make target `.deps/affinity.Plo'
--- Comment #2 from dave at hiauly1 dot hia dot nrc dot ca 2010-08-02 17:18 --- Subject: Re: No rule to make target `.deps/affinity.Plo' On Mon, 02 Aug 2010, rwild at gcc dot gnu dot org wrote: Please also show how you configured your build, and please also post the exact error lines spewed out by 'make' that you trimmed from the end. They can give valuable clues as to whether some serialization is missing in the toplevel Makefile (should all-target-libgfortran depend on all-target-libgomp?) ../gcc/configure --build=i686-apple-darwin9 --host=i686-apple-darwin9 --target=i 686-apple-darwin9 --with-tune=generic --prefix=/opt/gnu/gcc/gcc-4.6.0 --with-gmp =/opt/gnu/gcc/gcc-4.6.0 --enable-debug=no --disable-nls --enable-languages=c,c+ +,objc,fortran,obj-c++,java,ada --enable-threads=posix --enable-__cxa_atexit -- enable-java-gc=boehm make -j 4 bootstrap Trying to repeat. Dave -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45118
[Bug tree-optimization/41089] [4.5/4.6 Regression] stdarg pass produces wrong code
--- Comment #49 from ubizjak at gmail dot com 2010-08-02 17:33 --- Author: uros Date: Mon Aug 2 17:26:40 2010 New Revision: 162826 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=162826 Log: target/41089 * config/alpha/alpha.c (alpha_build_builtin_va_list): Mark __offset as volatile. Modified: trunk/gcc/ChangeLog trunk/gcc/config/alpha/alpha.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41089
[Bug tree-optimization/44914] [4.6 Regression] ICE: in calc_dfs_tree, at dominance.c:395 with -fipa-sra -fnon-call-exceptions
--- Comment #8 from jamborm at gcc dot gnu dot org 2010-08-02 17:40 --- (In reply to comment #7) The patch is really the same. I did not commit it because the branch was frozen for the release of 4.5.1. I'm re-testing it on the branch now and hopefully will commit it today. Actually no, the patch must be slightly different because scan_function() is not split into multiple functions in 4.5... but along the same lines. I'll prepare it, hopefully today. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44914
[Bug c++/45153] DWARF DW_AT_external flag set for undefined variables
--- Comment #1 from pj dot pandit at yahoo dot co dot in 2010-08-02 18:38
---
The following patch to gcc-4.4.4 seems to fix the issue for DW_AT_subprogram
DIEs.
$ diff -Naurp gcc-4.4.4/gcc/dwarf2out.c gcc-4.4.4.1/gcc/dwarf2out.c
--- gcc-4.4.4/gcc/dwarf2out.c 2010-02-10 20:39:06.0 +0530
+++ gcc-4.4.4.1/gcc/dwarf2out.c 2010-08-02 15:16:17.495688080 +0530
@@ -13712,7 +13712,7 @@ gen_subprogram_die (tree decl, dw_die_re
{
subr_die = new_die (DW_TAG_subprogram, context_die, decl);
- if (TREE_PUBLIC (decl))
+ if (TREE_PUBLIC (decl) !DECL_EXTERNAL (decl))
add_AT_flag (subr_die, DW_AT_external, 1);
add_name_and_src_coords_attributes (subr_die, decl);
@@ -14163,7 +14163,7 @@ gen_variable_die (tree decl, tree origin
add_type_attribute (var_die, type, TREE_READONLY (decl),
TREE_THIS_VOLATILE (decl), context_die);
- if (TREE_PUBLIC (decl))
+ if (TREE_PUBLIC (decl) !DECL_EXTERNAL (decl))
add_AT_flag (var_die, DW_AT_external, 1);
if (DECL_ARTIFICIAL (decl))
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45153
[Bug c++/45167] New: lambda+template=Internal error: Segmentation fault (program cc1plus)
build environment: gcc 4.5.0 on MacBook Pro running OS X 10.6.4
execution environment: same as build environment
command: g++ --std=c++0x filename
auto at_or_above = [] ( int threshhold )
{
return [threshhold] (int x)
{ return x = threshhold; };
};
template class Pred
int zero( Pred ) { return 0; }
int main() { return zero( at_or_above(0) ); }
--
Summary: lambda+template=Internal error: Segmentation fault
(program cc1plus)
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: wb at fnal dot gov
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45167
[Bug fortran/45159] Unnecessary temporaries
--- Comment #10 from tkoenig at gcc dot gnu dot org 2010-08-02 19:00 --- This fixes the test case from comment #0, and looks much more sane. Let's see if this survives regression-testing... Index: dependency.c === --- dependency.c(Revision 162824) +++ dependency.c(Arbeitskopie) @@ -1716,8 +1716,8 @@ gfc_dep_resolver (gfc_ref *lref, gfc_ref *rref, gf /* If no intention of reversing or reversing is explicitly inhibited, convert backward dependence to overlap. */ - if ((reverse == NULL this_dep == GFC_DEP_BACKWARD) - || (reverse reverse[n] == GFC_CANNOT_REVERSE)) + if (this_dep == GFC_DEP_BACKWARD + (reverse == NULL || reverse[n] == GFC_CANNOT_REVERSE)) this_dep = GFC_DEP_OVERLAP; } -- tkoenig at gcc dot gnu dot org changed: What|Removed |Added AssignedTo|unassigned at gcc dot gnu |tkoenig at gcc dot gnu dot |dot org |org Status|NEW |ASSIGNED Last reconfirmed|2010-08-01 17:37:25 |2010-08-02 19:00:32 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45159
[Bug target/31850] gcc.c-torture/compile/limits-fnargs.c is slow at compiling for spu-elf
--- Comment #18 from uweigand at gcc dot gnu dot org 2010-08-02 19:25 --- (In reply to comment #17) Someone might want to try this again after the fix for PR 38582. It's a lot better, but still not real good. I'm now seeing on a QS22 (ppu - spu cross compiler): -O0: 0m9.983s -O1: 4m7.801s -O2: 35m10.236s -O3: 36m7.059s However, the culprit clearly is no longer register renaming, which is now down to 5 seconds in the worst case. For -O1, the by far slowest pass is dead store elimination: dead store elim1 : 101.02 (41%) usr 0.62 (35%) sys 101.65 (41%) wall 4307 kB ( 7%) ggc dead store elim2 : 105.03 (43%) usr 0.65 (37%) sys 105.69 (43%) wall 3028 kB ( 5%) ggc For -O2 and -O3, the by far slowest pass is register allocation: integrated RA :1485.83 (71%) usr 15.86 (68%) sys1501.87 (71%) wall 2486 kB ( 2%) ggc reload: 157.93 ( 8%) usr 1.97 ( 8%) sys 159.92 ( 8%) wall 30178 kB (19%) ggc reload CSE regs : 100.05 ( 5%) usr 1.45 ( 6%) sys 101.51 ( 5%) wall 12556 kB ( 8%) ggc Scheduling only takes about 2 min in either case. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31850
[Bug target/31850] gcc.c-torture/compile/limits-fnargs.c is slow at compiling for spu-elf
--- Comment #19 from pinskia at gcc dot gnu dot org 2010-08-02 20:16 --- reload CSE regs Will most likely be helped by: http://gcc.gnu.org/ml/gcc-patches/2010-07/msg02397.html -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31850
[Bug target/45063] [4.6 Regression] ICE: Segmentation fault (cc1) compiling matmul_i1.c
--- Comment #18 from bernds at gcc dot gnu dot org 2010-08-02 20:18 --- Subject: Bug 45063 Author: bernds Date: Mon Aug 2 20:17:59 2010 New Revision: 162828 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=162828 Log: PR target/45063 * caller-save.c (save_call_clobbered_regs): Remove regs from hard_regs_saved when they are set. Modified: trunk/gcc/ChangeLog trunk/gcc/caller-save.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45063
[Bug inline-asm/45160] [4.4.x/4.5.x regression] Invalid assembly code is generated for x86 architecture for faad2 library (AAC decode algorithm)
--- Comment #9 from t dot artem at mailcity dot com 2010-08-02 20:27 --- The culprit is the ic_predict.c file. When I compile it with -fno-strict-aliasing (while everything else is being compiled with -fstrict-aliasing) libfaad works correctly. These are the warnings which I get from GCC: ic_predict.c: In function 'flt_round': ic_predict.c:58: warning: dereferencing type-punned pointer will break strict-aliasing rules ic_predict.c:58: warning: dereferencing type-punned pointer will break strict-aliasing rules ic_predict.c:58: warning: dereferencing type-punned pointer will break strict-aliasing rules ic_predict.c:60: warning: dereferencing type-punned pointer will break strict-aliasing rules ic_predict.c: In function 'ic_prediction': ic_predict.c:78: warning: dereferencing pointer 'tmp' does break strict-aliasing rules ic_predict.c:77: note: initialized from here ic_predict.c:78: warning: dereferencing pointer 'tmp' does break strict-aliasing rules ic_predict.c:77: note: initialized from here ic_predict.c:78: warning: dereferencing pointer 'tmp' does break strict-aliasing rules ic_predict.c:77: note: initialized from here ic_predict.c:78: warning: dereferencing pointer 'tmp' does break strict-aliasing rules ic_predict.c:77: note: initialized from here ic_predict.c:78: warning: dereferencing pointer 'tmp' does break strict-aliasing rules ic_predict.c:77: note: initialized from here ic_predict.c:78: warning: dereferencing pointer 'tmp' does break strict-aliasing rules ic_predict.c:77: note: initialized from here Maybe GCC developers could devise a patch for this file because http://www.audiocoding.com/faad2.html site seems to be dead. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45160
[Bug fortran/45161] ICE on gfortran.dg/typebound_proc_16.f03 with -std=f2003
-- janus at gcc dot gnu dot org changed: What|Removed |Added AssignedTo|unassigned at gcc dot gnu |janus at gcc dot gnu dot org |dot org | Status|UNCONFIRMED |ASSIGNED Ever Confirmed|0 |1 Last reconfirmed|-00-00 00:00:00 |2010-08-02 20:53:04 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45161
[Bug c/45168] New: There should be a way to mark specific enum members as deprecated
It's fairly common in C and C++ libraries to have an enum with each element
representing an aspect of a request. In these situations it would be nice to be
able to deprecate specific enum members. For example the user wants to retrieve
a Foo from a server, and Foo's have 3 parts, they might make a request using an
API like this:
enum FooRequest {
WANT_FIZZ = 1 0,
WANT_BUZZ = 1 1,
WANT_BEEZLE = 1 2
};
make_request(WANT_FIZZ | WANT_BUZZ, callback);
And perhaps WANT_BUZZ should be deprecated because now Foo's have some other,
better thing to request instead that should be transitioned to. It'd be nice to
write:
enum FooRequest {
WANT_FIZZ = 1 0,
WANT_BUZZ = 1 1 __attribute__((deprecated)),
WANT_BEEZLE = 1 2,
WANT_SUPERIOR_BUZZ = 1 3
};
So that at compile time users would be notified that WANT_BUZZ is no longer the
way to go.
--
Summary: There should be a way to mark specific enum members as
deprecated
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: joseph dot h dot garvin at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45168
[Bug fortran/45159] Unnecessary temporaries
--- Comment #11 from tkoenig at gcc dot gnu dot org 2010-08-02 22:04 --- Subject: Bug 45159 Author: tkoenig Date: Mon Aug 2 22:04:36 2010 New Revision: 162829 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=162829 Log: 2010-08-02 Thomas Koenig tkoe...@gcc.gnu.org PR fortran/45159 * depencency.c (gfc_dep_resolver): Fix logic for when a loop can be reversed. 2010-08-02 Thomas Koenig tkoe...@gcc.gnu.org PR fortran/45159 * gfortran.dg/dependency_29.f90: New test. Added: trunk/gcc/testsuite/gfortran.dg/dependency_29.f90 Modified: trunk/gcc/fortran/ChangeLog trunk/gcc/fortran/dependency.c trunk/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45159
[Bug fortran/45159] Unnecessary temporaries
--- Comment #12 from tkoenig at gcc dot gnu dot org 2010-08-02 22:16 --- (In reply to comment #5) [macbook] lin/test% gfc -Warray-temporaries nf.f90 nf.f90:293.30: if ( ii1 ) x(i:i+nxy-1) = x(i:i+nxy-1) - au3(i-nxy:i-1)*x(i-nxy:i-1) 1 Warning: Creating array temporary at (1) nf.f90:280.21: g(i:i+nxy-1) = g(i:i+nxy-1) - au3(i-nxy:i-1)*g(i-nxy:i-1) 1 Warning: Creating array temporary at (1) nf.f90:261.29: if ( ii1 ) x(i:i+nx-1) = x(i:i+nx-1) - au2(i-nx:i-1)*x(i-nx:i-1) 1 Warning: Creating array temporary at (1) nf.f90:248.20: g(i:i+nx-1) = g(i:i+nx-1) - au2(i-nx:i-1)*g(i-nx:i-1) 1 Warning: Creating array temporary at (1) i.e., disjoint sections are not spotted. This vanishes with -m32. The reason is that we, for some strange reason, convert the upper bound to the pointer width on a particular platform. For 64-bit, this results in subroutine foo(a,b,i,j,k,n) implicit none integer, intent(in) :: i, j, k, n real, dimension(n) :: a,b a(k:i-1) = a(i:j) end subroutine foo ending up with -fdump-parse-treee as ASSIGN foo:a(foo:k:__convert_i4_i8[[(((- foo:i 1)))]]) foo:a(foo:i:__convert_i4_i8[[((foo:j))]]) which confuses gfc_dep_compare_expr, which is too stupid to see through the type conversion. I know where to start, but it is late in the evening ;-) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45159
[Bug c++/45169] New: C++ Hello World mudflap violations
A trivial C++ 'hello world' produces mudflap violations w/ -O2, but not w/ -O0:
---
#include iostream
int main() {
std::cout hello std::endl;
}
---
/opt/gcc-4.5.1/bin/gcc -Wall -O2 -fmudflap -o test test.cc -lmudflap -lstdc++
./test
***
mudflap violation 1 (check/read): time=1280788265.017031 ptr=0x7f1d214b79e0
size=8
pc=0x7f1d214dbd31
location=`/opt/gcc-4.5.1/lib/gcc/x86_64-unknown-linux-gnu/4.5.1/../../../../include/c++/4.5.1/ostream:542:46
(main)'
/opt/gcc-4.5.1/lib64/libmudflap.so.0(__mf_check+0x41) [0x7f1d214dbd31]
./test(main+0x23b) [0x400ebb]
/lib/libc.so.6(__libc_start_main+0xfd) [0x7f1d20e6cc4d]
number of nearby objects: 0
***
mudflap violation 2 (check/read): time=1280788265.017175 ptr=0x7f1d214bdec0
size=57
pc=0x7f1d214dbd31
location=`/opt/gcc-4.5.1/lib/gcc/x86_64-unknown-linux-gnu/4.5.1/../../../../include/c++/4.5.1/bits/locale_facets.h:866:2
(main)'
/opt/gcc-4.5.1/lib64/libmudflap.so.0(__mf_check+0x41) [0x7f1d214dbd31]
./test(main+0x1ee) [0x400e6e]
/lib/libc.so.6(__libc_start_main+0xfd) [0x7f1d20e6cc4d]
number of nearby objects: 0
***
mudflap violation 3 (check/read): time=1280788265.017233 ptr=0x7f1d214bdec0
size=8
pc=0x7f1d214dbd31
location=`/opt/gcc-4.5.1/lib/gcc/x86_64-unknown-linux-gnu/4.5.1/../../../../include/c++/4.5.1/bits/locale_facets.h:869:27
(main)'
/opt/gcc-4.5.1/lib64/libmudflap.so.0(__mf_check+0x41) [0x7f1d214dbd31]
./test(main+0x27c) [0x400efc]
/lib/libc.so.6(__libc_start_main+0xfd) [0x7f1d20e6cc4d]
number of nearby objects: 0
***
mudflap violation 4 (check/read): time=1280788265.017289 ptr=0x7f1d214b4de0
size=8
pc=0x7f1d214dbd31
location=`/opt/gcc-4.5.1/lib/gcc/x86_64-unknown-linux-gnu/4.5.1/../../../../include/c++/4.5.1/bits/locale_facets.h:869:27
(main)'
/opt/gcc-4.5.1/lib64/libmudflap.so.0(__mf_check+0x41) [0x7f1d214dbd31]
./test(main+0x2a3) [0x400f23]
/lib/libc.so.6(__libc_start_main+0xfd) [0x7f1d20e6cc4d]
number of nearby objects: 0
hello
---
/opt/gcc-4.5.1/bin/gcc -Wall -O0 -fmudflap -o test test.cc -lmudflap -lstdc++
./test
hello
---
Expected Behavior: No mudflap violations with -O2
gcc -v:
Using built-in specs.
COLLECT_GCC=/opt/gcc-4.5.1/bin/gcc
COLLECT_LTO_WRAPPER=/opt/gcc-4.5.1/libexec/gcc/x86_64-unknown-linux-gnu/4.5.1/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.5.1/configure --prefix=/opt/gcc-4.5.1
--disable-bootstrap --enable-languages=c,c++
Thread model: posix
gcc version 4.5.1 (GCC)
Also fails with ubuntu 10.04's:
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.3-4ubuntu5'
--with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared
--enable-multiarch --enable-linker-build-id --with-system-zlib
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls
--enable-clocale=gnu --enable-libstdcxx-debug --enable-plugin --enable-objc-gc
--disable-werror --with-arch-32=i486 --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5)
--
Summary: C++ Hello World mudflap violations
Product: gcc
Version: 4.5.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: bryanr81 at gmail dot com
GCC build triplet: x86_64-linux-gnu
GCC host triplet: x86_64-linux-gnu
GCC target triplet: x86_64-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45169
[Bug fortran/45170] New: suspected bug in error generated by allocatable character array
gfortran tech support, When I attempt to compile the program listed below, the following error messages are printed: n...@oxford:~/Elements/AllocChar$ more alloccharP.xyz alloccharP.f90:6.12: character(:), allocatable :: c_Char(:) 1 Error: Syntax error in CHARACTER declaration at (1) alloccharP.f90:7.12: character(:), allocatable :: io_message 1 Error: Syntax error in CHARACTER declaration at (1) I searched the bug database but could not find this bug listed. I am attempting to declare an array of allocatable characters, which I believe is legal. The Intel 12.0 beta compiler and version 5.2 of the nag compiler both compile this routine. (The routine, as written, is not correct: the variable io_message needs to be allocated before it is used in the open statement.) Thank you for your attention. Yours truly, Norm Norman S. Clerman program AllocChar integer, parameter :: CHAR_ELEMENTS = 5, FILE_UNIT = 11 integer :: io_stat ! character(:), allocatable :: c_Char(CHAR_ELEMENTS) character(:), allocatable :: c_Char(:) character(:), allocatable :: io_message character (*), parameter :: FILE_NAME = no_file.dat ! io_message = no errors ! print *, io_message ! c_Char = ! c_Char(1: 2) = [Hello , everyone!] ! c_Char(1) = Hello ! c_Char(2) = everyone ! print *, c_Char (1: 2) open (unit = FILE_UNIT, file = FILE_NAME, iostat = io_stat, iomsg = io_message, status = old) print *, io_message end program AllocChar -- Summary: suspected bug in error generated by allocatable character array Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: clerman at fuse dot net http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45170
[Bug fortran/45170] suspected bug in error generated by allocatable character array
--- Comment #1 from kargl at gcc dot gnu dot org 2010-08-03 02:31 --- This statement: character(:), allocatable :: io_message uses a deferred type parameter (a F2003 feature), which is not supported by gfortran at this time. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45170
[Bug fortran/45170] [F2003] allocatable character lengths
--- Comment #2 from burnus at gcc dot gnu dot org 2010-08-03 05:43 --- By the way, gfortran's Fortran 2003 implementation status can be found at http://gcc.gnu.org/wiki/Fortran2003Status -- burnus at gcc dot gnu dot org changed: What|Removed |Added OtherBugsDependingO||20585 nThis|| Summary|suspected bug in error |[F2003] allocatable |generated by allocatable|character lengths |character array | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45170
