http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54782
Bug #: 54782 Summary: [4.8 Regression] ICE: in change_scope, at final.c:1543 with -O -ffast-math -ftree-parallelize-loops=2 -g Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassig...@gcc.gnu.org ReportedBy: zso...@seznam.cz Created attachment 28330 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28330 reduced testcase Compiler output: $ gcc -O -ffast-math -ftree-parallelize-loops=2 -g testcase.c testcase.c: In function 'foo._loopfn.0': testcase.c:12:3: internal compiler error: in change_scope, at final.c:1543 for (i = 0; i < s->n; i++) ^ 0x7980ea change_scope /mnt/svn/gcc-trunk/gcc/final.c:1543 0x79d68c reemit_insn_block_notes /mnt/svn/gcc-trunk/gcc/final.c:1613 0x79d68c final_start_function(rtx_def*, _IO_FILE*, int) /mnt/svn/gcc-trunk/gcc/final.c:1670 0x7a0585 rest_of_handle_final /mnt/svn/gcc-trunk/gcc/final.c:4291 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions. Tested revisions: r191953 - crash r191586 - crash 4.7 r191640 - OK