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       signal.c - scc - simple c99 compiler
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       ---
       signal.c (297B)
       ---
            1 #include <signal.h>
            2 #include <stddef.h>
            3 
            4 #include <arch/sigaction.h>
            5 #include <sys.h>
            6 
            7 #undef signal
            8 
            9 void
           10 (*signal(int signum, void (*func)(int)))(int)
           11 {
           12         struct sigaction osa, sa = {
           13                 .sa_handler = func,
           14         };
           15 
           16         if (_sigaction(signum, &sa, &osa) < 0)
           17                 return SIG_ERR;
           18 
           19         return osa.sa_handler;
           20 }