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-rw-r--r--test/asan/TestCases/speculative_load2.cc24
1 files changed, 24 insertions, 0 deletions
diff --git a/test/asan/TestCases/speculative_load2.cc b/test/asan/TestCases/speculative_load2.cc
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index 000000000000..51051eb2b75b
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+++ b/test/asan/TestCases/speculative_load2.cc
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+// Verifies that speculative loads from unions do not happen under asan.
+// RUN: %clangxx_asan -O0 %s -o %t && %run %t 2>&1
+// RUN: %clangxx_asan -O1 %s -o %t && %run %t 2>&1
+// RUN: %clangxx_asan -O2 %s -o %t && %run %t 2>&1
+// RUN: %clangxx_asan -O3 %s -o %t && %run %t 2>&1
+
+typedef union {
+ short q;
+ struct {
+ short x;
+ short y;
+ int for_alignment;
+ } w;
+} U;
+
+int main() {
+ char *buf = new char[2];
+ buf[0] = buf[1] = 0x0;
+ U *u = (U *)buf;
+ short result = u->q == 0 ? 0 : u->w.y;
+ delete[] buf;
+ return result;
+}
+