Collin Funk wrote:
> The only change to sys/wait.h in POSIX 2024 is that WCOREDUMP is now
> standardized. I've pushed the two attached patches updating a source
> comment and adding a test for the definition that was missing.
The CI reports a compilation error on all glibc systems.
How to reproduce:
$ ./gnulib-tool --test --single-configure system-posix
...
In file included from ../../gltests/test-stdlib-h.c:40:
../../gltests/test-sys_wait-h.h:41:55: error: call to undeclared function
'WCOREDUMP'; ISO C99 and later do not support implicit function declarations
[-Wimplicit-function-declaration]
41 | i = WEXITSTATUS (i) + WSTOPSIG (i) + WTERMSIG (i) + WCOREDUMP (i);
| ^
1 error generated.
make[4]: *** [Makefile:27801: test-stdlib-h.o] Error 1
This patch fixes it.
2025-01-13 Bruno Haible <br...@clisp.org>
stdlib-h: Define WCOREDUMP, as required by POSIX:2024.
* lib/stdlib.in.h: Include <sys/wait.h> also when WCOREDUMP is not
defined.
* doc/posix-headers/stdlib.texi: Document the glibc bug.
diff --git a/doc/posix-headers/stdlib.texi b/doc/posix-headers/stdlib.texi
index 6c62771c13..ee7ab19449 100644
--- a/doc/posix-headers/stdlib.texi
+++ b/doc/posix-headers/stdlib.texi
@@ -33,6 +33,11 @@
@code{WSTOPSIG} are not defined in this header file (only in
@code{<sys/wait.h>}) on some platforms:
MirBSD 10.
+@item
+The macro @code{WCOREDUMP} is not defined in this header file (only in
+@code{<sys/wait.h>}) on some platforms:
+@c https://sourceware.org/bugzilla/show_bug.cgi?id=32551
+glibc 2.40.
@end itemize
Portability problems not fixed by Gnulib:
diff --git a/lib/stdlib.in.h b/lib/stdlib.in.h
index f8e2a6ce34..bd82086ff3 100644
--- a/lib/stdlib.in.h
+++ b/lib/stdlib.in.h
@@ -62,8 +62,9 @@
/* NetBSD 5.0 mis-defines NULL. */
#include <stddef.h>
-/* MirBSD 10 defines WEXITSTATUS in <sys/wait.h>, not in <stdlib.h>. */
-#if @GNULIB_SYSTEM_POSIX@ && !defined WEXITSTATUS
+/* MirBSD 10 defines WEXITSTATUS in <sys/wait.h>, not in <stdlib.h>.
+ glibc 2.40 defines WCOREDUMP in <sys/wait.h>, not in <stdlib.h>. */
+#if @GNULIB_SYSTEM_POSIX@ && !(defined WEXITSTATUS && defined WCOREDUMP)
# include <sys/wait.h>
#endif
