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Add const for first argument of sigismember for fit POSIX spec

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Change-Id: Icbc67375282f2a22dce02e4bacab15ddae846057
This commit is contained in:
Kito Cheng 2013-01-20 00:15:15 +08:00
parent 5496bbf6a3
commit f373b11f9f
1 changed files with 2 additions and 2 deletions
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4
libc/include/signal.h
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@ -57,13 +57,13 @@ typedef int sig_atomic_t;
extern const char* const sys_siglist[];
extern const char* const sys_signame[];
static __inline__ int sigismember(sigset_t* set, int signum) {
static __inline__ int sigismember(const sigset_t* set, int signum) {
int bit = signum - 1; // Signal numbers start at 1, but bit positions start at 0.
if (set == NULL || bit < 0 || bit >= 8*sizeof(sigset_t)) {
errno = EINVAL;
return -1;
}
unsigned long* local_set = (unsigned long*) set;
const unsigned long* local_set = (const unsigned long*) set;
return (int) ((local_set[bit / LONG_BIT] >> (bit % LONG_BIT)) & 1);
}