strsignal -- return string describing signal


#define _GNU_SOURCE
#include <string.h>

char *strsignal(int sig);

extern const char * const sys_siglist[];


strsignal returns a string describing the signal number sig. The string can only be used until the next call to strsignal.

The array sys_siglist holds the signal description strings indexed by signal number. strsignal should be used if possible instead of this array.

Return Value

strsignal returns the appropriate description string, or an unknown signal message if the signal number is invalid. On some systems (but not on Linux), a NULL pointer may be returned instead for an invalid signal number.