From f709859f331b8fbd7fede5769d668008fc5ba789 Mon Sep 17 00:00:00 2001 From: Nathan Chancellor Date: Mon, 23 Feb 2026 11:23:12 -0700 Subject: [PATCH] init/Kconfig: Adjust fixed clang version for __builtin_counted_by_ref Commit d39a1d7486d9 ("compiler_types: Disable __builtin_counted_by_ref for Clang") used 22.0.0 as the fixed version for a compiler crash but the fix was only merged in main (23.0.0) and release/22.x (22.1.0). With the current fixed version number, prerelease or Android LLVM 22 builds will still be able to hit the compiler crash when building the kernel. This can be particularly disruptive when bisecting LLVM. Use 21.1.0 as the fixed version number to ensure the fix for this crash is always present. Fixes: d39a1d7486d9 ("compiler_types: Disable __builtin_counted_by_ref for Clang") Signed-off-by: Nathan Chancellor Link: https://patch.msgid.link/20260223-fix-clang-version-builtin-counted-by-ref-v1-1-3ea478a24f0a@kernel.org Signed-off-by: Kees Cook --- init/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/init/Kconfig b/init/Kconfig index c25869cf59c1..b55deae9256c 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -153,7 +153,7 @@ config CC_HAS_COUNTED_BY_PTR config CC_HAS_BROKEN_COUNTED_BY_REF bool # https://github.com/llvm/llvm-project/issues/182575 - default y if CC_IS_CLANG && CLANG_VERSION < 220000 + default y if CC_IS_CLANG && CLANG_VERSION < 220100 config CC_HAS_MULTIDIMENSIONAL_NONSTRING def_bool $(success,echo 'char tag[][4] __attribute__((__nonstring__)) = { };' | $(CC) $(CLANG_FLAGS) -x c - -c -o /dev/null -Werror)