Hi Hans. Following up on an old bug report: Hans Aberg <haber...@telia.com> wrote: > bad return from expression `(f-sum -1 2000 -30000 40000000000)': expected > 39999971999; got 39999972255 > FAIL: test-ffi
This turns out to be due to a bug in LLVM, namely that it improperly assumes that signed integer arguments will be sign-extended by the caller, although this is not specified by the SysV x86-64 PS ABI. The recently-released libffi 3.0.12 works around this problem. If you're interested in the gory details, see: http://sourceware.org/ml/libffi-discuss/2013/msg00012.html http://gcc.gnu.org/ml/gcc/2013-01/msg00447.html http://bugs.gnu.org/13342 We've been told by another MacOS user that the FFI tests now pass when Guile is linked against libffi 3.0.12, so I'm closing this bug. Please let us know if you continue to have problems with the FFI on MacOS. Thanks again for the bug report! Mark
