Fix crash in codegen on casting to `bool &`.

Currently codegen crashes trying to emit casting to bool &. It happens because bool type is converted to i1 and later then lvalue for reference is converted to i1*. But when codegen tries to load this lvalue it crashes trying to load value from this i1*.

Differential Revision: http://reviews.llvm.org/D13325

llvm-svn: 249534

1 files changed, 9 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/cast-to-ref-bool.cpp b/clang/test/CodeGenCXX/cast-to-ref-bool.cpp
new file mode 100644
index 00000000000..10647205de3
--- /dev/null
+++ b/clang/test/CodeGenCXX/cast-to-ref-bool.cpp
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s
+
+// CHECK-LABEL: main
+int main(int argc, char **argv) {
+  // CHECK: load i8, i8* %
+  // CHECK-NEXT: trunc i8 %{{.+}} to i1
+  bool b = (bool &)argv[argc][1];
+  return b;
+}