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Annotation of researchv10no/cmd/lcc/ph/d47b.c, revision 1.1

1.1     ! root        1: /* The Plum Hall Validation Suite for C
        !             2:  * Unpublished copyright (c) 1986-1991, Chiron Systems Inc and Plum Hall Inc.
        !             3:  * VERSION: 4
        !             4:  * DATE: 1993-01-01
        !             5:  * The "ANSI" mode of this suite corresponds to official ANSI C, X3.159-1989.
        !             6:  * As per your license agreement, your distribution is not to be moved or copied outside the Designated Site
        !             7:  * without specific permission from Plum Hall Inc.
        !             8:  */
        !             9: 
        !            10: 
        !            11: #include "flags.h"
        !            12: #ifndef SKIP47
        !            13: #define LIB_TEST 1
        !            14: /*
        !            15:  * 4.7 - Signal handling (Continued)
        !            16:  */
        !            17: #include "defs.h"
        !            18: 
        !            19: #if ANSI
        !            20: #include <signal.h>
        !            21: extern volatile sig_atomic_t flag_sig;
        !            22: extern void (*prev_fn)(int);
        !            23: typedef void (*PIF)(int);
        !            24: 
        !            25: /* handler - record signal number in flag_sig */
        !            26: static void handler(sig_no)
        !            27:        int sig_no;
        !            28:        {
        !            29:        flag_sig = sig_no;
        !            30:        }
        !            31: 
        !            32: /* d4_7b - establish handler for sig_no */
        !            33: PIF d4_7b(sig_no)
        !            34:        int sig_no;
        !            35:        {
        !            36:        flag_sig = 0;
        !            37:        prev_fn = signal(sig_no, handler);
        !            38:        return (prev_fn);
        !            39:        }
        !            40: 
        !            41: #include <setjmp.h>
        !            42: /* d4_7b_2 - a signal handler that longjmps out */
        !            43: void d4_7b_2(sig_no)
        !            44:        int sig_no;
        !            45:        {
        !            46:        extern jmp_buf d7jbuf;
        !            47: 
        !            48:        longjmp(d7jbuf, sig_no);        /* no-return is ok; see 3.6.6.4 */
        !            49:        }
        !            50: #endif /* ANSI */
        !            51: 
        !            52: #endif /* SKIP47 */

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