https://gcc.gnu.org/g:f307ab8b18c7b5623344b01f24af593594319196
commit r16-2268-gf307ab8b18c7b5623344b01f24af593594319196 Author: Andrew Pinski <quic_apin...@quicinc.com> Date: Tue Jul 15 08:56:31 2025 -0700 libgcc: Fix aarch64 build For aarch64, libgcc is built with -Werror, after the latest -Wunused-but-set* commit (r16-2258-g0eac9cfee8cb0b21d), a new warning showed up: ``` ../../../gcc/libgcc/config/libbid/bid_binarydecimal.c: In function ‘__binary32_to_bid128’: ../../../gcc/libgcc/config/libbid/bid_binarydecimal.c:130:31: error: variable ‘c3’ set but not used [-Werror=unused-but-set-variable=] 130 | { unsigned long long c0,c1,c2,c3; \ | ^~ ../../../gcc/libgcc/config/libbid/bid_binarydecimal.c:146842:5: note: in expansion of macro ‘__mul_10x256_to_256’ 146842 | __mul_10x256_to_256 (z.w[5], z.w[4], z.w[3], z.w[2], z.w[5], z.w[4], | ^~~~~~~~~~~~~~~~~~~ ``` This fixes it by casting c3 to void after the last __mul_10x64 in __mul_10x256_to_256 macro to mark it as being "used". libgcc/config/libbid/ChangeLog: * bid_binarydecimal.c (__mul_10x256_to_256): Mark c3 as being used. Signed-off-by: Andrew Pinski <quic_apin...@quicinc.com> Diff: --- libgcc/config/libbid/bid_binarydecimal.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libgcc/config/libbid/bid_binarydecimal.c b/libgcc/config/libbid/bid_binarydecimal.c index daca2ffe306f..12e32b9667aa 100644 --- a/libgcc/config/libbid/bid_binarydecimal.c +++ b/libgcc/config/libbid/bid_binarydecimal.c @@ -132,6 +132,7 @@ UINT64 CY; \ __mul_10x64(p1,c1,a1,c0); \ __mul_10x64(p2,c2,a2,c1); \ __mul_10x64(p3,c3,a3,c2); \ + (void)c3; \ } // Set up indices for low and high parts, depending on the endian-ness.