freelocale() has a portability problem as well, due to macOS.
2025-02-14 Bruno Haible <br...@clisp.org>
freelocale: Allow non-POSIX prototype on macOS.
* tests/test-freelocale.c: Skip the signature check on macOS.
* doc/posix-functions/freelocale.texi: Mention the macOS problem.
diff --git a/doc/posix-functions/freelocale.texi
b/doc/posix-functions/freelocale.texi
index 1167f002fb..21134adc78 100644
--- a/doc/posix-functions/freelocale.texi
+++ b/doc/posix-functions/freelocale.texi
@@ -21,6 +21,8 @@
Portability problems not fixed by Gnulib:
@itemize
@item
+This function's return type is @code{int} instead of @code{void} on macOS.
+@item
This function may cause crashes in subsequent @code{newlocale} invocations
on some platforms:
@c https://dev.haiku-os.org/ticket/18344
diff --git a/tests/test-freelocale.c b/tests/test-freelocale.c
index 65c70b1ea1..d056866b1d 100644
--- a/tests/test-freelocale.c
+++ b/tests/test-freelocale.c
@@ -21,7 +21,9 @@
#include <locale.h>
#include "signature.h"
+#if !(defined __APPLE__ && defined __MACH__)
SIGNATURE_CHECK (freelocale, void, (locale_t));
+#endif
#include "macros.h"
