Donald Bruce Stewart wrote:
From (OpenBSD) man sigfillset :
sigemptyset() and sigfillset() are provided as macros, but actual
functions are available if their names are undefined (with #undef
name).
You want to use the function instead?
It's not their status as additional macros which causes trouble, but
the missing casts. From OpenBSD's <signal.h>:
#define sigemptyset(set) (*(set) = 0, 0)
#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
This is plainly wrong, set should be casted to sigset_t* (or a temp.
variable of that type should be used). Hugs' FFI uses void* for Haskell's
Ptr Foo, and dereferencing this causes trouble... Linux' headers are a
bit more careful here.
Cheers,
S.
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