The following testcase crashes the mainline compiler when compiled with "-msse2 -fmudflap -ftree-vectorize -O3" on i686-pc-linux-gnu:
==================================== int a[16]; void foo() { int i; for (i = 0; i < 16; i++) a[i] = i; } ==================================== bug7.c: In function 'foo': bug7.c:9: error: invalid operand to binary operator vect_vec_iv_.27 bug7.c:9: internal compiler error: verify_stmts failed Please submit a full bug report, [etc.] -- Summary: [4.3 regression] ICE with -fmudflap and vectorization Product: gcc Version: 4.3.0 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=34618