------- Comment #2 from rguenth at gcc dot gnu dot org 2007-12-07 10:25 ------- Confirmed. Wrong alias info:
foo (p) { unsigned int n.0; <bb 2>: # n_2 = V_MUST_DEF <n_1>; n = 4; # NONLOCAL.6_6 = V_MAY_DEF <NONLOCAL.6_5>; *p_3 = 0; # VUSE <n_2>; n.0_4 = n; if (n.0_4 != 0) goto <L0>; else goto <L1>; <L0>:; # VUSE <n_2>; # VUSE <NONLOCAL.6_6>; abort (); <L1>:; return; -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Component|c |tree-optimization Ever Confirmed|0 |1 Keywords| |alias, wrong-code Known to fail| |4.2.2 Known to work| |4.1.3 4.3.0 Last reconfirmed|0000-00-00 00:00:00 |2007-12-07 10:25:13 date| | Summary|Aliasing failure during tree|[4.2 Regression] Aliasing |fre |failure during tree fre Target Milestone|--- |4.2.3 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34363