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[PATCH 3/5] Support clang for explicit_bzero
From: |
roucaries . bastien |
Subject: |
[PATCH 3/5] Support clang for explicit_bzero |
Date: |
Sat, 11 Apr 2020 23:20:33 +0200 |
From: Bastien Roucariès <address@hidden>
According to https://bugs.llvm.org/show_bug.cgi?id=15495#c11
llvm need g type constraint
Signed-off-by: Bastien Roucariès <address@hidden>
---
lib/explicit_bzero.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/lib/explicit_bzero.c b/lib/explicit_bzero.c
index b355f9bdf..21bbd67e8 100644
--- a/lib/explicit_bzero.c
+++ b/lib/explicit_bzero.c
@@ -56,9 +56,15 @@ explicit_bzero (void *s, size_t len)
(void) SecureZeroMemory(s,len);
#else
memset (s, '\0', len);
-# if defined __GNUC__ && !defined __clang__
- /* Compiler barrier. */
- asm volatile ("" ::: "memory");
-# endif
+#if defined __GNUC__
+# if !defined __clang__
+ /* Compiler barrier. */
+ asm volatile ("" ::: "memory");
+# else
+ /* https://bugs.llvm.org/show_bug.cgi?id=15495#c11 */
+ __asm__ volatile("" : : "g"(s) : "memory");
+# endif
+#endif
+
#endif
}
--
2.25.1
- [patch] Improve explicit_bzero, roucaries . bastien, 2020/04/11
- [PATCH 1/5] Use memset_s if possible for explicit_bzero, roucaries . bastien, 2020/04/11
- [PATCH 2/5] Use SecureZeroMemory on windows for explicit_bzero, roucaries . bastien, 2020/04/11
- [PATCH 5/5] Fix styling in explicit bzero, roucaries . bastien, 2020/04/11
- [PATCH 3/5] Support clang for explicit_bzero,
roucaries . bastien <=
- [PATCH 4/5] Use volatile trick for explicit_bzero, roucaries . bastien, 2020/04/11
- Re: [patch] Improve explicit_bzero, Bruno Haible, 2020/04/11