[ASan] Add a failing test that demonstrates that ASan currently break…

…s dead code stripping on Linux.

See https://code.google.com/p/address-sanitizer/issues/detail?id=260 for more info.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@200553 91177308-0d34-0410-b5e6-96231b3b80d8

lib/asan/lit_tests/TestCases/Linux/globals-gc-sections.cc

@@ -0,0 +1,13 @@
+// RUN: %clangxx_asan %s -o %t -Wl,--gc-sections -ffunction-sections -mllvm -asan-globals=0
+// RUN: %clangxx_asan %s -o %t -Wl,--gc-sections -ffunction-sections -mllvm -asan-globals=1
+
+// https://code.google.com/p/address-sanitizer/issues/detail?id=260
+// XFAIL: *
+
+int undefined();
+
+int (*unused)() = undefined;
+
+int main() {
+        return 0;
+}