The testcase gcc.target/powerpc/darwin-bool-1.c fails when compiled on Darwin PPC at -m64. It appears that sizeof(_Bool) returns 1 when the code is compiled at -m64 rather than 4.
-- Summary: gcc.target/powerpc/darwin-bool-1.c fails on powerpc- apple-darwin8 at -m64 Product: gcc Version: 4.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: howarth at nitro dot med dot uc dot edu GCC build triplet: powerpc-apple-darwin8 GCC host triplet: powerpc-apple-darwin8 GCC target triplet: powerpc-apple-darwin8 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29055