| 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 | } |