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[Bug fortran/51218] [4.7 Regression] Potential optimization bug
- From: "dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 19 Nov 2011 00:03:49 +0000
- Subject: [Bug fortran/51218] [4.7 Regression] Potential optimization bug
- Auto-submitted: auto-generated
- References: <bug-51218-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51218
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
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CC| |tkoenig at gcc dot gnu.org
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-11-19 00:03:49 UTC ---
The miscompilation is triggered by -ffrontend-optimize, work-around: use
-fno-frontend-optimize.
Revision 171653 is dealing with the frontend optimization. If I am not
mistaken, it is the only change dealing with frontend optimization after
r171100, although I don't understand how this revision could cause a
miscompilation.
The crash occurs in __mo_dec_matrix_MOD_sum_vector.