------- Comment #5 from rguenth at gcc dot gnu dot org 2010-04-21 11:49 ------- (In reply to comment #4) > Subject: Re: [4.5 Regression] FAIL: gcc.dg/tree-ssa/20031015-1.c (internal > compiler error) > > > Can you bisect the few commits that happened inbetween? Like reverting > > the fixes for PRs 43679 and/or 43661, 43642? > > Strangely, this was introduced in 157991 (change to BASE-VER).
157991 is the change to DEV-PHASE. That will turn on release-checking by default which means that tree-checking macros are omitted for dump_gimple_stmt and thus different code gets generated. You might want to check if the same issue can be reproduced on trunk with --enable-checking=release. And then dig into why dump_gimple_stmt is miscompiled w/o checking. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43740
