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Annotation of micropolis/src/tcl/compat/testwait.c, revision 1.1

1.1     ! root        1: /* 
        !             2:  * testwait.c --
        !             3:  *
        !             4:  *     This file contains a simple program that will compile
        !             5:  *     correctly if and only if <sys/wait.h> defines the
        !             6:  *     type "union wait".  It is used during configuration
        !             7:  *     to determine whether or not to use this type.
        !             8:  *
        !             9:  * Copyright 1991 Regents of the University of California
        !            10:  * Permission to use, copy, modify, and distribute this
        !            11:  * software and its documentation for any purpose and without
        !            12:  * fee is hereby granted, provided that this copyright
        !            13:  * notice appears in all copies.  The University of California
        !            14:  * makes no representations about the suitability of this
        !            15:  * software for any purpose.  It is provided "as is" without
        !            16:  * express or implied warranty.
        !            17:  */
        !            18: 
        !            19: #ifndef lint
        !            20: static char rcsid[] = "$Header: /user6/ouster/tcl/compat/RCS/testwait.c,v 1.3 91/12/18 13:42:09 ouster Exp $ SPRITE (Berkeley)";
        !            21: #endif /* not lint */
        !            22: 
        !            23: #include <sys/types.h>
        !            24: #include <sys/wait.h>
        !            25: 
        !            26: /*
        !            27:  * This code is very tricky, mostly because of weirdness in HP-UX
        !            28:  * where "union wait" is defined in both the BSD and SYS-V
        !            29:  * environments.  Supposedly the WIFEXITED business will do the
        !            30:  * right thing...
        !            31:  */
        !            32: 
        !            33: union wait x;
        !            34: 
        !            35: int main()
        !            36: {
        !            37:     WIFEXITED(x);              /* Generates compiler error if WIFEXITED
        !            38:                                 * uses an int. */
        !            39:     return 0;
        !            40: }

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