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authorDimitry Andric <dim@FreeBSD.org>2015-12-30 11:52:19 +0000
committerDimitry Andric <dim@FreeBSD.org>2015-12-30 11:52:19 +0000
commit5c909fa013fc285f010a95e8d387e0ef3412da9c (patch)
tree1059d068ad281f4776ff44cd414574f99a460023 /test/asan/TestCases/speculative_load2.cc
parentf31bcc68c72371a2bf63aead9f3373a1ff2053b6 (diff)
downloadsrc-5c909fa013fc285f010a95e8d387e0ef3412da9c.tar.gz
src-5c909fa013fc285f010a95e8d387e0ef3412da9c.zip
Vendor import of compiler-rt trunk r256633:vendor/compiler-rt/compiler-rt-trunk-r256633
Notes
Notes: svn path=/vendor/compiler-rt/dist/; revision=292925 svn path=/vendor/compiler-rt/compiler-rt-trunk-r256633/; revision=292926; tag=vendor/compiler-rt/compiler-rt-trunk-r256633
Diffstat (limited to 'test/asan/TestCases/speculative_load2.cc')
-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
new file mode 100644
index 000000000000..51051eb2b75b
--- /dev/null
+++ b/test/asan/TestCases/speculative_load2.cc
@@ -0,0 +1,24 @@
+// 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;
+}
+