projects / micropolis / blame
| Commit | Line | Data |
|---|---|---|
| 6a5fa4e0 MG |
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 | } |