[PATCH] D27583: [asan] Add test which detects bugs undetectable before r288563

[Vitaly Buka via Phabricator via llvm-commits]

vitalybuka created this revision.
vitalybuka added reviewers: kcc, eugenis.
vitalybuka added a subscriber: llvm-commits.
Herald added a subscriber: kubabrecka.

https://reviews.llvm.org/D27583

Files:
  test/asan/TestCases/use-after-scope-temp2.cc


Index: test/asan/TestCases/use-after-scope-temp2.cc
===================================================================
--- /dev/null
+++ test/asan/TestCases/use-after-scope-temp2.cc
@@ -0,0 +1,21 @@
+// RUN: %clangxx_asan %stdcxx11 -O1 -fsanitize-address-use-after-scope %s -o %t && \
+// RUN:     not %run %t 2>&1 | FileCheck %s
+
+
+struct IntHolder {
+  const IntHolder& Self() const {
+    return *this;
+  }
+  int val = 3;
+};
+
+const IntHolder *saved;
+
+int main(int argc, char *argv[]) {
+  const auto& var = IntHolder().Self();
+  saved = &IntHolder().Self();
+  int x = saved->val;  // BOOM
+  // CHECK: ERROR: AddressSanitizer: stack-use-after-scope
+  // CHECK:  #0 0x{{.*}} in main {{.*}}use-after-scope-temp2.cc:[[@LINE-2]]
+  return x;
+}


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