[asan] added tests for asan-initialization-order, patch by Reid Watson
llvm-svn: 163207
diff --git a/compiler-rt/lib/asan/lit_tests/initialization-bug.cc b/compiler-rt/lib/asan/lit_tests/initialization-bug.cc
new file mode 100644
index 0000000..872b8bf
--- /dev/null
+++ b/compiler-rt/lib/asan/lit_tests/initialization-bug.cc
@@ -0,0 +1,33 @@
+// Test to make sure basic initialization order errors are caught.
+
+// RUN: %clangxx_asan -m64 -O0 %s %p/Helpers/initialization-bug-extra.cc\
+// RUN: -mllvm -asan-initialization-order -o %t && %t 2>&1 \
+// RUN: | %symbolize | FileCheck %s
+// RUN: %clangxx_asan -m32 -O0 %s %p/Helpers/initialization-bug-extra.cc\
+// RUN: -mllvm -asan-initialization-order -o %t && %t 2>&1 \
+// RUN: | %symbolize | FileCheck %s
+
+// Do not test with optimization -- the error may be optimized away.
+
+extern int y;
+
+// 'y' is a dynamically initialized global residing in a different TU. This
+// dynamic initializer will read the value of 'y' before main starts. The
+// result is undefined behavior, which should be caught by initialization order
+// checking.
+int __attribute__((noinline)) initX() {
+ return y + 1;
+ // CHECK: {{AddressSanitizer initialization-order-fiasco}}
+ // CHECK: {{READ of size .* at 0x.* thread T0}}
+ // CHECK: {{#0 0x.* in .*initX.* .*initialization-bug.cc:19}}
+ // CHECK: {{0x.* is located 0 bytes inside of global variable .*y.*}}
+}
+
+
+// This initializer begins our initialization order problems.
+static int x = initX();
+
+// ASan should have caused an exit before main runs.
+int main() {
+ return -1;
+}