[Bug testsuite/55994] multiple definition or memset or strlen for builtins tests with LTO options
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55994 Joel Sherrill joel at gcc dot gnu.org changed: What|Removed |Added Status|NEW |RESOLVED CC||joel at gcc dot gnu.org Resolution||FIXED --- Comment #8 from Joel Sherrill joel at gcc dot gnu.org 2013-03-22 16:03:14 UTC --- Sebastian's patch applied to the head and 4.8 branch. Closing.
[Bug testsuite/55994] multiple definition or memset or strlen for builtins tests with LTO options
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55994 Sebastian Huber sebastian.hu...@embedded-brains.de changed: What|Removed |Added CC||sebastian.huber@embedded-br ||ains.de --- Comment #7 from Sebastian Huber sebastian.hu...@embedded-brains.de 2013-03-20 09:20:24 UTC --- The crucial thing is also that all these functions are recognized as builtins and GCC knows what they are expected to do. The failure also vanishes if -fno-builtin is used. Lets have a look at this example: gcc 1.c 2.c 3.c -l4 I expect that the modules 1.o 2.o 3.o end up in the executable and unresolved symbols inside this module set are resolved with definitions provided by the library 4. In particular if I have a global function f() in 2.c then I expect to have this function in my executable even in case a global function f() is also defined in the library 4. This is wrong for builtins. Here GCC seems to assume that implementations are interchangeable. It would be quite interesting to know what happens if we compile libc with -flto. In one failed GCC test f() is memcpy(), 2.c is 20010124-1-lib.c and lib4 is libc.
[Bug testsuite/55994] multiple definition or memset or strlen for builtins tests with LTO options
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55994 --- Comment #6 from Janis Johnson janis at gcc dot gnu.org 2013-01-25 00:26:43 UTC --- Author: janis Date: Fri Jan 25 00:26:34 2013 New Revision: 195458 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=195458 Log: Backport from mainline 2013-01-16 Janis Johnson jani...@codesourcery.com PR testsuite/55994 * gcc.c-torture/execute/builtins/builtins.exp: Add -Wl,--allow-multiple-definition for eabi and elf targets. Modified: branches/gcc-4_7-branch/gcc/testsuite/ChangeLog branches/gcc-4_7-branch/gcc/testsuite/gcc.c-torture/execute/builtins/builtins.exp
[Bug testsuite/55994] multiple definition or memset or strlen for builtins tests with LTO options
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55994 --- Comment #5 from Janis Johnson janis at gcc dot gnu.org 2013-01-16 18:52:56 UTC --- Author: janis Date: Wed Jan 16 18:52:51 2013 New Revision: 195250 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=195250 Log: PR testsuite/55994 * gcc.c-torture/execute/builtins/builtins.exp: Add -Wl,--allow-multiple-definition for eabi and elf targets. Modified: trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.c-torture/execute/builtins/builtins.exp
[Bug testsuite/55994] multiple definition or memset or strlen for builtins tests with LTO options
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55994 --- Comment #4 from Janis Johnson janis at gcc dot gnu.org 2013-01-15 20:00:17 UTC --- Patch posted: http://gcc.gnu.org/ml/gcc-patches/2013-01/msg00801.html.
