The Darwin kernel does not provide useful guard variable support.

Issue this as an IR-gen error;  it's not really worthwhile doing this
"right", i.e. in Sema, because IR gen knows a lot of tricks beyond
what the constant evaluator knows.

llvm-svn: 127854

1 files changed, 9 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/apple-kext-guard-variable.cpp b/clang/test/CodeGenCXX/apple-kext-guard-variable.cpp
new file mode 100644
index 00000000000..f9d44603a84
--- /dev/null
+++ b/clang/test/CodeGenCXX/apple-kext-guard-variable.cpp
@@ -0,0 +1,9 @@
+// RUN: %clang -mtriple=x86_64-apple-darwin10 -S -mkernel -Xclang -verify %s
+
+// rdar://problem/9143356
+
+int foo();
+void test() {
+  static int y = 0;
+  static int x = foo(); // expected-error {{this initialization requires a guard variable, which the kernel does not support}}
+}