git: 43703bc489ec - main - stdlib.h: Fix qsort_r compatibility with GCC 12.

The branch main has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=43703bc489ec504b947b869045c492ed38c1a69c

commit 43703bc489ec504b947b869045c492ed38c1a69c
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2023-01-19 22:48:52 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2023-01-19 22:48:52 +0000

    stdlib.h: Fix qsort_r compatibility with GCC 12.
    
    GCC 12 (unlike GCC 9) does not match a function argument passed to the
    old qsort_r() API (as is used in the qsort_r_compat test) to a
    function pointer type via __generic.  It treats the function type as a
    distinct type from a function pointer.  As a workaround, add a second
    definition of qsort_r for GCC 12 which uses the bare function type.
    
    Reviewed by:    emaste
    Differential Revision:  https://reviews.freebsd.org/D37410
---
 include/stdlib.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/stdlib.h b/include/stdlib.h
index 754e8f5f5fd4..30d24aea1c10 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -352,9 +352,15 @@ void __qsort_r_compat(void *, size_t, size_t, void *,
 __sym_compat(qsort_r, __qsort_r_compat, FBSD_1.0);
 #endif
 #if defined(__generic) && !defined(__cplusplus)
+#if __GNUC__ == 12
+#define	qsort_r(base, nel, width, arg4, arg5)				\
+    __generic(arg5, int (void *, const void *, const void *),		\
+	__qsort_r_compat, qsort_r)(base, nel, width, arg4, arg5)
+#else
 #define	qsort_r(base, nel, width, arg4, arg5)				\
     __generic(arg5, int (*)(void *, const void *, const void *),	\
         __qsort_r_compat, qsort_r)(base, nel, width, arg4, arg5)
+#endif
 #elif defined(__cplusplus)
 __END_DECLS
 extern "C++" {