PR/56839 CVS commit: src/common/lib/libc/atomic

["Nick Hudson" <skrll%netbsd.org@localhost>]

The following reply was made to PR port-arm/56839; it has been noted by GNATS.

From: "Nick Hudson" <skrll%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/56839 CVS commit: src/common/lib/libc/atomic
Date: Sun, 3 May 2026 11:48:03 +0000

 Module Name:	src
 Committed By:	skrll
 Date:		Sun May  3 11:48:02 UTC 2026
 
 Modified Files:
 	src/common/lib/libc/atomic: atomic_cas_16_cas.c atomic_cas_32_cas.c
 	    atomic_cas_64_cas.c atomic_cas_8_cas.c atomic_cas_by_cas32.c
 	    atomic_init_testset.c
 
 Log Message:
 PR/56839 GCC emits wrong codes for compare_and_swap_1 bultins on armv5 (el & eb)
 
 There is mismatch in signedness of the GCC builtin __sync_* function arguments
 and the _atomic_* functions so we cannot directly alias them. Instead write
 the __sync_* functions with signed arguments and pass them the unsigned
 _atomics_* functions.
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.3 -r1.4 src/common/lib/libc/atomic/atomic_cas_16_cas.c \
     src/common/lib/libc/atomic/atomic_cas_64_cas.c \
     src/common/lib/libc/atomic/atomic_cas_8_cas.c
 cvs rdiff -u -r1.2 -r1.3 src/common/lib/libc/atomic/atomic_cas_32_cas.c
 cvs rdiff -u -r1.4 -r1.5 src/common/lib/libc/atomic/atomic_cas_by_cas32.c
 cvs rdiff -u -r1.21 -r1.22 src/common/lib/libc/atomic/atomic_init_testset.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.