Cygwin now ships gcc 14.4 as mingw compiler, instead of gcc 13.4. This leads
to a compilation error in gettext/libtextstyle:
In file included from ../../../libtextstyle/lib/fatal-signal.c:19:
../../../libtextstyle/lib/fatal-signal.c: In function
'libtextstyle_block_fatal_signals':
./config.h:728:25: error: implicit declaration of function
'libtextstyle_pthread_sigmask'; did you mean 'libtextstyle_at_fatal_signal'?
[-Wimplicit-function-declaration]
728 | #define pthread_sigmask libtextstyle_pthread_sigmask
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../libtextstyle/lib/fatal-signal.c:321:9: note: in expansion of macro
'pthread_sigmask'
321 | pthread_sigmask (SIG_BLOCK, &fatal_signal_set, NULL);
| ^~~~~~~~~~~~~~~
./config.h:728:25: warning: nested extern declaration of
'libtextstyle_pthread_sigmask' [-Wnested-externs]
728 | #define pthread_sigmask libtextstyle_pthread_sigmask
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../libtextstyle/lib/fatal-signal.c:321:9: note: in expansion of macro
'pthread_sigmask'
321 | pthread_sigmask (SIG_BLOCK, &fatal_signal_set, NULL);
| ^~~~~~~~~~~~~~~
make[5]: *** [Makefile:4953: libtextstyle_la-fatal-signal.lo] Error 1
With gcc < 14, this was merely a warning.
The cause is a missing declaration of pthread_sigmask after a namespacing
instruction
#define pthread_sigmask libtextstyle_pthread_sigmask
This patch fixes it.
2026-07-08 Bruno Haible <[email protected]>
pthread_sigmask: Avoid compilation error on mingw with gcc >= 14.
* lib/signal.in.h (pthread_sigmask): Revert 2018-01-04 change, now
unnecessary due to 2026-04-10 change.
diff --git a/lib/signal.in.h b/lib/signal.in.h
index 9e140ca5e8..236ec7a83c 100644
--- a/lib/signal.in.h
+++ b/lib/signal.in.h
@@ -200,7 +200,7 @@ _GL_CXXALIAS_RPL (pthread_sigmask, int,
const sigset_t *restrict new_mask,
sigset_t *restrict old_mask));
# else
-# if !(@HAVE_PTHREAD_SIGMASK@ || defined pthread_sigmask)
+# if !@HAVE_PTHREAD_SIGMASK@
_GL_FUNCDECL_SYS (pthread_sigmask, int,
(int how,
const sigset_t *restrict new_mask,
