https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69232
Bug ID: 69232 Summary: floop-unroll-and-jam, at graphite_transform_loops with isl Product: gcc Version: 5.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: nickpapior at gmail dot com Target Milestone: --- Created attachment 37308 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37308&action=edit Source code to recreate error Compiling the attached code will produce an internal compiler error. The error message is: ../isl_ctx.c:245: isl_ctx freed, but some objects still reference it bessph.f:7:0: FUNCTION BESSPH (L,X) ^ internal compiler error: Aborted 0xa87146 crash_signal ../../gcc/toplev.c:383 0xfad1e9 graphite_transform_loops() ../../gcc/graphite.c:319 0xfad650 graphite_transforms ../../gcc/graphite.c:339 0xfad650 execute ../../gcc/graphite.c:420 Error arises after compiling the attached file with: gfortran -c -O2 -floop-interchange -floop-unroll-and-jam bessph.f no error at -O1. Tested on two systems. System 1 (5.2.0): ##### GCC version and configure options Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/opt/generic/gcc/5.2.0/libexec/gcc/x86_64-unknown-linux-gnu/5.2.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: ../configure --prefix /opt/generic/gcc/5.2.0 --with-gmp=/opt/generic/gmp/6.0.0a --with-mpfr=/opt/generic/mpfr/3.1.3 --with-mpc=/opt/generic/mpc/1.0.3 --with-isl=/opt/generic/isl/0.15 --enable-lto --enable-threads --enable-stage1-languages=c,c++,fortran,go,objc,obj-c++ --with-multilib-list=m64 Thread model: posix gcc version 5.2.0 (GCC) #### System Linux 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt20-1+deb8u1 (2015-12-14) x86_64 unknown System 2 (5.3.0) ##### GCC version and configure options Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/opt/2016-jan/generic/gcc/5.3.0/libexec/gcc/x86_64-unknown-linux-gnu/5.3.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: ../configure --prefix /opt/2016-jan/generic/gcc/5.3.0 --with-gmp=/opt/2016-jan/generic/gmp/6.1.0 --with-mpfr=/opt/2016-jan/generic/mpfr/3.1.3 --with-mpc=/opt/2016-jan/generic/mpc/1.0.3 --with-isl=/opt/2016-jan/generic/isl/0.15 --enable-lto --enable-threads --enable-stage1-languages=c,c++,fortran,go,objc,obj-c++ --with-multilib-list=m64 Thread model: posix gcc version 5.3.0 (GCC) ##### System Linux 2.6.32-279.14.1.el6.x86_64 #1 SMP Tue Nov 6 23:43:09 UTC 2012 x86_64 x86_64