The branch main has been updated by rlibby:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=3cfcbbfaf83aa0a61c1fd72cb1e82a011b08bc83

commit 3cfcbbfaf83aa0a61c1fd72cb1e82a011b08bc83
Author:     Ryan Libby <rli...@freebsd.org>
AuthorDate: 2024-07-02 19:12:59 +0000
Commit:     Ryan Libby <rli...@freebsd.org>
CommitDate: 2024-07-02 19:12:59 +0000

    cdefs.h __generic: avoid gcc -Wunused-value
    
    Fixup after
    9d2f97981755 <sys/cdefs.h>: Decay expression passed to fallback version of 
__generic()
    
    Reviewed by:    imp, jrtc27, kib
    Differential Revision:  https://reviews.freebsd.org/D45825
---
 sys/sys/cdefs.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sys/sys/cdefs.h b/sys/sys/cdefs.h
index 53ac1b1c3f92..7c4890ece8d5 100644
--- a/sys/sys/cdefs.h
+++ b/sys/sys/cdefs.h
@@ -244,8 +244,8 @@
        _Generic(expr, t: yes, default: no)
 #elif !defined(__cplusplus)
 #define        __generic(expr, t, yes, no)                                     
\
-       __builtin_choose_expr(                                          \
-           __builtin_types_compatible_p(__typeof((0, (expr))), t), yes, no)
+       __builtin_choose_expr(__builtin_types_compatible_p(             \
+           __typeof(((void)0, (expr))), t), yes, no)
 #endif
 
 /*

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