SIG_ERR            25 include/asm-generic/signal.h #define SIG_ERR	((__force __sighandler_t)-1)	/* error return from signal */
SIG_ERR            98 include/asm-parisc/signal.h #define SIG_ERR	((__sighandler_t)-1)	/* error return from signal */
SIG_ERR           120 include/asm-xtensa/signal.h #define SIG_ERR	((__sighandler_t)-1)	/* error return from signal */