The attached valid code snippet triggers an ICE on the trunk when compiled with "-O2 -ftree-parallelize-loops=2":
g++: Internal error: Segmentation fault (program cc1plus) Please submit a full bug report. [etc.] -- Summary: [4.5 Regression] ICE with -ftree-parallelize-loops Product: gcc Version: 4.5.0 Status: UNCONFIRMED Keywords: ice-on-valid-code, monitored Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: reichelt at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40140