i386-darwin defaults to having -mfpmath=sse,387 by default so gcc.target/i386/excess-precision-{1,2,3}.c fail because those testcases depend on excessive precision to happen.
-- Summary: gcc.target/i386/excess-precision-*.c assume the default -mfp-math does not include SSE Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: testsuite AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: pinskia at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39831