------- Comment #5 from pinskia at gcc dot gnu dot org 2006-03-02 13:40 ------- (In reply to comment #4) > "-O1 -ftree-vrp -finline-functions". > More to come...
Can you try "-O3 -fwrapv"? It might be the source have undefined code in it for signed overflow and changes to VRP exposed it. Also do you know which file is being miscompiled? If so can you attach the dump generated by doing -O3 -fdump-tree-vrp-details? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26528
