//===----------------------------------------------------------------------===//
#include "llvm/Support/Casting.h"
+#include "llvm/IR/User.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h"
-
#include "gtest/gtest.h"
#include <cstdlib>
namespace llvm {
+// Used to test illegal cast. If a cast doesn't match any of the "real" ones,
+// it will match this one.
+struct IllegalCast;
+template <typename T> IllegalCast *cast(...) { return nullptr; }
// set up two example classes
// with conversion facility
bar *fub();
+
+template <> struct simplify_type<foo> {
+ typedef int SimpleType;
+ static SimpleType getSimplifiedValue(foo &Val) { return 0; }
+};
+
} // End llvm namespace
using namespace llvm;
+
+// Test the peculiar behavior of Use in simplify_type.
+static_assert(std::is_same<simplify_type<Use>::SimpleType, Value *>::value,
+ "Use doesn't simplify correctly!");
+static_assert(std::is_same<simplify_type<Use *>::SimpleType, Value *>::value,
+ "Use doesn't simplify correctly!");
+
+// Test that a regular class behaves as expected.
+static_assert(std::is_same<simplify_type<foo>::SimpleType, int>::value,
+ "Unexpected simplify_type result!");
+static_assert(std::is_same<simplify_type<foo *>::SimpleType, foo *>::value,
+ "Unexpected simplify_type result!");
+
namespace {
-const foo *null_foo = NULL;
+const foo *null_foo = nullptr;
bar B;
extern bar &B1;
const bar *B2 = &B;
} // anonymous namespace
-bar *llvm::fub() { return 0; }
+bar *llvm::fub() { return nullptr; }
namespace {
namespace inferred_upcasting {
Derived D;
EXPECT_TRUE(isa<Base>(D));
Base *BP = dyn_cast<Base>(&D);
- EXPECT_TRUE(BP != NULL);
+ EXPECT_TRUE(BP != nullptr);
}
} // end namespace inferred_upcasting
} // end anonymous namespace
+// Test that we reject casts of temporaries (and so the illegal cast gets used).
+namespace TemporaryCast {
+struct pod {};
+IllegalCast *testIllegalCast() { return cast<foo>(pod()); }
+}