The test case testsuite/libffi.call/many.c can spuriously fail due to
excess floating-point precision. Instrumenting it with some printf
calls shows differences well above FLT_EPSILON. (Note when
instrumenting it that multiple computations of the difference, such as
one in a print and another in the conditional, may produce different
results.)
Rather than complicating the test suite with architecture-specific flags
to avoid excess precision, just simplify the floating-point computation
to avoid a dependency on potential excess precision.
src/x86/ffi64.c: In function 'classify_argument':
src/x86/ffi64.c:205:5: error: duplicate case value
case FFI_TYPE_LONGDOUBLE:
^
src/x86/ffi64.c:202:5: error: previously used here
case FFI_TYPE_DOUBLE:
^
Josh Triplett