linux-kernel - [PATCH] compiler_attributes: fix __has_attribute(__no_sanitize_coverage_

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Message-Id: <20210714150159.2866321-1-elver@google.com>
Date:   Wed, 14 Jul 2021 17:01:59 +0200
From:   Marco Elver <elver@...gle.com>
To:     elver@...gle.com
Cc:     linux-kernel@...r.kernel.org, ojeda@...nel.org,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH] compiler_attributes: fix __has_attribute(__no_sanitize_coverage__)
 for gcc 4

Fix __has_attribute(__no_sanitize_coverage__) for GCC 4 by defining
__GCC4_has_attribute___no_sanitize_coverage__.

Fixes: 540540d06e9d ("kcov: add __no_sanitize_coverage to fix noinstr for all architectures")
Reported-by: Geert Uytterhoeven <geert@...ux-m68k.org>
Signed-off-by: Marco Elver <elver@...gle.com>
---
 include/linux/compiler_attributes.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h
index 2487be0e7199..67c5667f8042 100644
--- a/include/linux/compiler_attributes.h
+++ b/include/linux/compiler_attributes.h
@@ -37,6 +37,7 @@
 # define __GCC4_has_attribute___nonstring__           0
 # define __GCC4_has_attribute___no_sanitize_address__ 1
 # define __GCC4_has_attribute___no_sanitize_undefined__ 1
+# define __GCC4_has_attribute___no_sanitize_coverage__ 0
 # define __GCC4_has_attribute___fallthrough__         0
 #endif
 
-- 
2.32.0.93.g670b81a890-goog