1 files changed, 93 insertions, 0 deletions
diff --git a/test/cfi/anon-namespace.cpp b/test/cfi/anon-namespace.cpp
new file mode 100644
index 0000000..0c2c689
--- /dev/null
+++ b/test/cfi/anon-namespace.cpp
@@ -0,0 +1,93 @@
+// RUN: %clangxx_cfi -c -DTU1 -o %t1.o %s
+// RUN: %clangxx_cfi -c -DTU2 -o %t2.o %S/../cfi/anon-namespace.cpp
+// RUN: %clangxx_cfi -o %t %t1.o %t2.o
+// RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s
+
+// RUN: %clangxx_cfi -c -DTU1 -DB32 -o %t1.o %s
+// RUN: %clangxx_cfi -c -DTU2 -DB32 -o %t2.o %S/../cfi/anon-namespace.cpp
+// RUN: %clangxx_cfi -o %t %t1.o %t2.o
+// RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s
+
+// RUN: %clangxx_cfi -c -DTU1 -DB64 -o %t1.o %s
+// RUN: %clangxx_cfi -c -DTU2 -DB64 -o %t2.o %S/../cfi/anon-namespace.cpp
+// RUN: %clangxx_cfi -o %t %t1.o %t2.o
+// RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s
+
+// RUN: %clangxx_cfi -c -DTU1 -DBM -o %t1.o %s
+// RUN: %clangxx_cfi -c -DTU2 -DBM -o %t2.o %S/../cfi/anon-namespace.cpp
+// RUN: %clangxx_cfi -o %t %t1.o %t2.o
+// RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s
+
+// RUN: %clangxx -c -DTU1 -o %t1.o %s
+// RUN: %clangxx -c -DTU2 -o %t2.o %S/../cfi/anon-namespace.cpp
+// RUN: %clangxx -o %t %t1.o %t2.o
+// RUN: %t 2>&1 | FileCheck --check-prefix=NCFI %s
+
+// Tests that the CFI mechanism treats classes in the anonymous namespace in
+// different translation units as having distinct identities. This is done by
+// compiling two translation units TU1 and TU2 containing a class named B in an
+// anonymous namespace, and testing that the program crashes if TU2 attempts to
+// use a TU1 B as a TU2 B.
+
+// FIXME: This test should not require that the paths supplied to the compiler
+// are different. It currently does so because bitset names have global scope
+// so we have to mangle the file path into the bitset name.
+
+#include <stdio.h>
+#include "utils.h"
+
+struct A {
+  virtual void f() = 0;
+};
+
+namespace {
+
+struct B : A {
+  virtual void f() {}
+};
+
+}
+
+A *mkb();
+
+#ifdef TU1
+
+A *mkb() {
+  return new B;
+}
+
+#endif  // TU1
+
+#ifdef TU2
+
+int main() {
+#ifdef B32
+  break_optimization(new Deriver<B, 0>);
+#endif
+
+#ifdef B64
+  break_optimization(new Deriver<B, 0>);
+  break_optimization(new Deriver<B, 1>);
+#endif
+
+#ifdef BM
+  break_optimization(new Deriver<B, 0>);
+  break_optimization(new Deriver<B, 1>);
+  break_optimization(new Deriver<B, 2>);
+#endif
+
+  A *a = mkb();
+  break_optimization(a);
+
+  // CFI: 1
+  // NCFI: 1
+  fprintf(stderr, "1\n");
+
+  ((B *)a)->f(); // UB here
+
+  // CFI-NOT: 2
+  // NCFI: 2
+  fprintf(stderr, "2\n");
+}
+
+#endif  // TU2