clang/test/CodeGen/2010-12-01-CommonGlobal.c

// RUN: %clang_cc1 -emit-llvm %s  -o /dev/null
// Don't crash on a common-linkage constant global.
extern const int kABSourceTypeProperty;
int foo(void) {
  return kABSourceTypeProperty;
}
const int kABSourceTypeProperty;