The following valid code snippet triggers an ICE since GCC 4.0.0 when compiled with "-W":
================================ void foo(__complex__ int i) { i == 0u; } ================================ bug.c: In function 'foo': bug.c:3: internal compiler error: tree check: expected integer_type or enumeral_type or boolean_type or real_type or fixed_point_type, have complex_type in int_fits_type_p, at tree.c:6173 Please submit a full bug report, [etc.] -- Summary: [4.1/4.2/4.3/4.4 regression] ICE with complex arithmetic Product: gcc Version: 4.4.0 Status: UNCONFIRMED Keywords: ice-on-valid-code, monitored Severity: normal Priority: P3 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: reichelt at gcc dot gnu dot org GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35430