Fix -Warray-parameter warning for __sigsetjmp

Fix the [-Warray-parameter=] warning for __sigsetjmp generated by GCC 11 and
later GCC versions:
|
| warning: argument 1 of type 'struct __jmp_buf_tag *' declared as a pointer [-Warray-parameter=]
|  extern int __sigsetjmp (struct __jmp_buf_tag *__env, int __savemask) __THROWNL;
| ...
| note: previously declared as an array 'struct __jmp_buf_tag[1]'
|  extern int __sigsetjmp (struct __jmp_buf_tag __env[1], int __savemask)
|

Use the same fix as in glibc. The fix is to move the struct __jmp_buf_tag
definition to a separate bits/ header so it can be included in
pthread.h, to allow to use an array (as in setjmp.h) rather than a pointer
in the declaration.

Signed-off-by: Pavel Kozlov <pavel.kozlov@synopsys.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/common/bits/jmp_buf_tag.h b/libc/sysdeps/linux/common/bits/jmp_buf_tag.h
new file mode 100644
index 000000000..4e1a4310a
--- /dev/null
+++ b/libc/sysdeps/linux/common/bits/jmp_buf_tag.h
@@ -0,0 +1,37 @@
+/* Define struct __jmp_buf_tag.
+   Copyright (C) 1991-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef	__jmp_buf_tag_defined
+#define	__jmp_buf_tag_defined 1
+
+#include <bits/setjmp.h>
+#include <bits/sigset.h>
+
+/* Calling environment, plus possibly a saved signal mask.  */
+struct __jmp_buf_tag
+  {
+    /* NOTE: The machine-dependent definitions of `__sigsetjmp'
+       assume that a `jmp_buf' begins with a `__jmp_buf' and that
+       `__mask_was_saved' follows it.  Do not move these members
+       or add others before it.  */
+    __jmp_buf __jmpbuf;		/* Calling environment.  */
+    int __mask_was_saved;	/* Saved the signal mask?  */
+    __sigset_t __saved_mask;	/* Saved signal mask.  */
+  };
+
+#endif
\ No newline at end of file