diff options
| -rw-r--r-- | winsup/cygwin/fenv.cc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/winsup/cygwin/fenv.cc b/winsup/cygwin/fenv.cc index bd3f90495..066704b40 100644 --- a/winsup/cygwin/fenv.cc +++ b/winsup/cygwin/fenv.cc @@ -141,7 +141,11 @@ fegetexcept (void) int fegetenv (fenv_t *envp) { - __asm__ volatile ("fnstenv %0" : "=m" (envp->_fpu) : ); + /* fnstenv disables all exceptions in the x87 FPU; as this is not what is + desired here, reload the cfg saved from the x87 FPU, back to the FPU */ + __asm__ volatile ("fnstenv %0\n\ + fldenv %0" + : "=m" (envp->_fpu) : ); if (use_sse) __asm__ volatile ("stmxcsr %0" : "=m" (envp->_sse_mxcsr) : ); return 0; |