From: Martin Liska <mliska@suse.cz>
Date: Thu, 23 May 2019 10:12:01 +0000 (+0200)
Subject: Do not instrument static target_expr for use-after-scope (PR sanitizer/90570).
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=832ece86e5a9f98f49571ed6407a8d93c4f50e18;p=gcc.git

Do not instrument static target_expr for use-after-scope (PR sanitizer/90570).

2019-05-23  Martin Liska  <mliska@suse.cz>

	PR sanitizer/90570
	* gimplify.c (gimplify_target_expr): Skip TREE_STATIC target
	expression similarly to gimplify_decl_expr.
2019-05-23  Martin Liska  <mliska@suse.cz>

	PR sanitizer/90570
	* g++.dg/asan/pr90570.C: New test.

From-SVN: r271548
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 45294c25047..2ccb803d5c6 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-05-23  Martin Liska  <mliska@suse.cz>
+
+	PR sanitizer/90570
+	* gimplify.c (gimplify_target_expr): Skip TREE_STATIC target
+	expression similarly to gimplify_decl_expr.
+
 2019-05-23  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>
 
 	* cse.c (cse_dump_path): s/dump_file/f.
diff --git a/gcc/gimplify.c b/gcc/gimplify.c
index 6905165ad33..8337b36c411 100644
--- a/gcc/gimplify.c
+++ b/gcc/gimplify.c
@@ -6668,6 +6668,7 @@ gimplify_target_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p)
 	    }
 	  if (asan_poisoned_variables
 	      && DECL_ALIGN (temp) <= MAX_SUPPORTED_STACK_ALIGNMENT
+	      && !TREE_STATIC (temp)
 	      && dbg_cnt (asan_use_after_scope)
 	      && !gimplify_omp_ctxp)
 	    {
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index e422d71bdfe..b34d1cc74b4 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2019-05-23  Martin Liska  <mliska@suse.cz>
+
+	PR sanitizer/90570
+	* g++.dg/asan/pr90570.C: New test.
+
 2019-05-23  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gnat.dg/opt78.ad[sb]: New test.
diff --git a/gcc/testsuite/g++.dg/asan/pr90570.C b/gcc/testsuite/g++.dg/asan/pr90570.C
new file mode 100644
index 00000000000..c2366905516
--- /dev/null
+++ b/gcc/testsuite/g++.dg/asan/pr90570.C
@@ -0,0 +1,18 @@
+/* PR sanitizer/90570 */
+/* { dg-do run } */
+
+#include <vector>
+
+struct stru
+{
+  std::vector<int> v{1,2,3,4};
+  int i{5};
+};
+
+int main()
+{
+  stru s1;
+  stru s2;
+
+  return 0;
+}