commit 1bab27f9831c3258716d09ef9702dabcb6dca703
author Dave Rodgman <dave.rodgman@arm.com> Wed Nov 23 16:51:59 2022 +0000
committer Dave Rodgman <dave.rodgman@arm.com> Wed Nov 23 16:51:59 2022 +0000
tree 686d20c6271bbca9e561380e52cee3ba6fc51137
parent 15531bc6d2e3c5e68229cd38baf59f382d238c89

Prevent unaligned access under ASan builds

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>

library/common.h

diff --git a/library/common.h b/library/common.h
index e502b5d..3925a79 100644
--- a/library/common.h
+++ b/library/common.h
@@ -73,11 +73,12 @@
  *
  * This list is incomplete.
  */
-#if defined(__i386__) || defined(__amd64__) || defined( __x86_64__) \
+#if (defined(__i386__) || defined(__amd64__) || defined( __x86_64__) \
     || defined(__ARM_FEATURE_UNALIGNED) \
     || defined(__aarch64__) \
     || defined(__ARM_ARCH_8__) || defined(__ARM_ARCH_8A__) || defined(__ARM_ARCH_8M__) \
-    || defined(__ARM_ARCH_7A__)
+    || defined(__ARM_ARCH_7A__)) \
+    && (!(defined(__has_feature) && __has_feature(undefined_behavior_sanitizer)))
 #define MBEDTLS_ALLOW_UNALIGNED_ACCESS
 #endif