[PATCH] D24323: [asan] Test that asan does not report use-after-scope if program jumped over variable declaration.

[Vitaly Buka via llvm-commits]

vitalybuka created this revision.
vitalybuka added a reviewer: eugenis.
vitalybuka added a subscriber: llvm-commits.
Herald added a subscriber: kubabrecka.

Test to check if PR28267 workaround works.

PR28267
PR27453

https://reviews.llvm.org/D24323

Files:
  test/asan/TestCases/use-after-scope-goto.c

Index: test/asan/TestCases/use-after-scope-goto.c
===================================================================
--- /dev/null
+++ test/asan/TestCases/use-after-scope-goto.c
@@ -0,0 +1,21 @@
+// RUN: %clang_asan -O0 -fsanitize-address-use-after-scope %s -o %t && %run %t
+
+// Function jumps over variable initialization making lifetime analysis
+// ambiguous. Asan should ignore such variable and program must not fail.
+
+int *ptr;
+
+void f(int cond) {
+  if (cond)
+    goto label;
+  int tmp = 1;
+
+label:
+  ptr = &tmp;
+  *ptr = 5;
+}
+
+int main() {
+  f(1);
+  return 0;
+}


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D24323.70617.patch
Type: text/x-patch
Size: 589 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20160907/dd34bd96/attachment.bin>