gcc/gcc5-pr64981.patch
Jakub Jelinek c728afb1bb 5.0.0-0.10
2015-02-09 15:11:34 +01:00

46 lines
1.7 KiB
Diff

2015-02-09 Jakub Jelinek <jakub@redhat.com>
PR sanitizer/64981
* builtins.c (expand_builtin): Call targetm.expand_builtin
for BUILT_IN_MD builtins regardless of asan_intercepted_p.
* gcc.dg/asan/pr64981.c: New test.
--- gcc/builtins.c.jj 2015-01-21 10:29:52.000000000 +0100
+++ gcc/builtins.c 2015-02-09 14:02:35.814716664 +0100
@@ -5960,6 +5960,9 @@ expand_builtin (tree exp, rtx target, rt
machine_mode target_mode = TYPE_MODE (TREE_TYPE (exp));
int flags;
+ if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
+ return targetm.expand_builtin (exp, target, subtarget, mode, ignore);
+
/* When ASan is enabled, we don't want to expand some memory/string
builtins and rely on libsanitizer's hooks. This allows us to avoid
redundant checks and be sure, that possible overflow will be detected
@@ -5968,9 +5971,6 @@ expand_builtin (tree exp, rtx target, rt
if ((flag_sanitize & SANITIZE_ADDRESS) && asan_intercepted_p (fcode))
return expand_call (exp, target, ignore);
- if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_MD)
- return targetm.expand_builtin (exp, target, subtarget, mode, ignore);
-
/* When not optimizing, generate calls to library functions for a certain
set of builtins. */
if (!optimize
--- gcc/testsuite/gcc.dg/asan/pr64981.c.jj 2015-02-09 14:05:50.252487512 +0100
+++ gcc/testsuite/gcc.dg/asan/pr64981.c 2015-02-09 14:05:34.000000000 +0100
@@ -0,0 +1,12 @@
+/* PR sanitizer/64981 */
+/* { dg-do compile { target { i?86-*-* x86_64-*-* } } } */
+/* { dg-options "-fsanitize=address -march=x86-64" } */
+
+int
+main ()
+{
+ __builtin_ia32_rdtsc ();
+ return 0;
+}
+
+/* { dg-final { scan-assembler-not "__builtin_ia32_rdtsc" } } */