From 4f177f803a625729f2a74238724f91a9f4304b63 Mon Sep 17 00:00:00 2001
From: Anders Carlsson <andersca@mac.com>
Date: Sat, 23 Aug 2008 21:12:35 +0000
Subject: [PATCH] treat bool literals as constatnt expressions.

llvm-svn: 55255
---
 clang/lib/AST/Expr.cpp      | 7 +++++++
 clang/test/SemaCXX/bool.cpp | 7 +++++++
 2 files changed, 14 insertions(+)
 create mode 100644 clang/test/SemaCXX/bool.cpp

diff --git a/clang/lib/AST/Expr.cpp b/clang/lib/AST/Expr.cpp
index b004bde7bd28..5107a5643c9b 100644
--- a/clang/lib/AST/Expr.cpp
+++ b/clang/lib/AST/Expr.cpp
@@ -720,6 +720,13 @@ bool Expr::isIntegerConstantExpr(llvm::APSInt &Result, ASTContext &Ctx,
     Result.setIsUnsigned(!getType()->isSignedIntegerType());
     break;
   }
+  case CXXBoolLiteralExprClass: {
+    const CXXBoolLiteralExpr *BL = cast<CXXBoolLiteralExpr>(this);
+    Result.zextOrTrunc(static_cast<uint32_t>(Ctx.getTypeSize(getType())));
+    Result = BL->getValue();
+    Result.setIsUnsigned(!getType()->isSignedIntegerType());
+    break;
+  }
   case CXXZeroInitValueExprClass:
     Result.clear();
     break;
diff --git a/clang/test/SemaCXX/bool.cpp b/clang/test/SemaCXX/bool.cpp
new file mode 100644
index 000000000000..e35495ababfa
--- /dev/null
+++ b/clang/test/SemaCXX/bool.cpp
@@ -0,0 +1,7 @@
+// RUN: clang -fsyntax-only -verify %s 
+
+// Bool literals can be enum values.
+enum {
+  ReadWrite = false,
+  ReadOnly = true
+};
-- 
GitLab