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-rw-r--r--test/asan/TestCases/vla_condition_overflow.cc22
1 files changed, 22 insertions, 0 deletions
diff --git a/test/asan/TestCases/vla_condition_overflow.cc b/test/asan/TestCases/vla_condition_overflow.cc
new file mode 100644
index 000000000000..17f28d823252
--- /dev/null
+++ b/test/asan/TestCases/vla_condition_overflow.cc
@@ -0,0 +1,22 @@
+// RUN: %clangxx_asan -O0 -mllvm -asan-instrument-allocas %s -o %t
+// RUN: not %run %t 2>&1 | FileCheck %s
+//
+// REQUIRES: stable-runtime
+
+#include <assert.h>
+#include <stdint.h>
+
+__attribute__((noinline)) void foo(int index, int len) {
+ if (index > len) {
+ char str[len]; //NOLINT
+ assert(!(reinterpret_cast<uintptr_t>(str) & 31L));
+ str[index] = '1'; // BOOM
+// CHECK: ERROR: AddressSanitizer: dynamic-stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
+// CHECK: WRITE of size 1 at [[ADDR]] thread T0
+ }
+}
+
+int main(int argc, char **argv) {
+ foo(33, 10);
+ return 0;
+}