From: Chandler Carruth <chandlerc@gmail.com>
Date: Sun, 24 Apr 2011 02:49:28 +0000 (+0000)
Subject: Add support for '__is_literal_type' spelling of the existing
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=3840281126e7d10552c55f6fd8b1ec9483898906;p=clang

Add support for '__is_literal_type' spelling of the existing
'__is_literal' type trait for GCC compatibility. At least one relased
version if libstdc++ uses this name for the trait despite it not being
documented anywhere.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130078 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/clang/Basic/TokenKinds.def b/include/clang/Basic/TokenKinds.def
index 96f5aa9cad..ac8e694337 100644
--- a/include/clang/Basic/TokenKinds.def
+++ b/include/clang/Basic/TokenKinds.def
@@ -338,6 +338,9 @@ KEYWORD(__is_empty                  , KEYCXX)
 KEYWORD(__is_enum                   , KEYCXX)
 // Tentative name - there's no implementation of std::is_literal_type yet.
 KEYWORD(__is_literal                , KEYCXX)
+// Name for GCC 4.6 compatibility - people have already written libraries using
+// this name unfortunately.
+KEYWORD(__is_literal_type           , KEYCXX)
 KEYWORD(__is_pod                    , KEYCXX)
 KEYWORD(__is_polymorphic            , KEYCXX)
 KEYWORD(__is_trivial                , KEYCXX)
diff --git a/lib/Parse/ParseExpr.cpp b/lib/Parse/ParseExpr.cpp
index d218c79736..0ad153fc57 100644
--- a/lib/Parse/ParseExpr.cpp
+++ b/lib/Parse/ParseExpr.cpp
@@ -989,6 +989,7 @@ ExprResult Parser::ParseCastExpression(bool isUnaryExpression,
   case tok::kw___is_empty:
   case tok::kw___is_enum:
   case tok::kw___is_literal:
+  case tok::kw___is_literal_type:
   case tok::kw___is_pod:
   case tok::kw___is_polymorphic:
   case tok::kw___is_trivial:
diff --git a/lib/Parse/ParseExprCXX.cpp b/lib/Parse/ParseExprCXX.cpp
index 38c074d1de..1165ff0978 100644
--- a/lib/Parse/ParseExprCXX.cpp
+++ b/lib/Parse/ParseExprCXX.cpp
@@ -1927,6 +1927,7 @@ static UnaryTypeTrait UnaryTypeTraitFromTokKind(tok::TokenKind kind) {
   case tok::kw___is_empty:                return UTT_IsEmpty;
   case tok::kw___is_enum:                 return UTT_IsEnum;
   case tok::kw___is_literal:              return UTT_IsLiteral;
+  case tok::kw___is_literal_type:         return UTT_IsLiteral;
   case tok::kw___is_pod:                  return UTT_IsPOD;
   case tok::kw___is_polymorphic:          return UTT_IsPolymorphic;
   case tok::kw___is_trivial:              return UTT_IsTrivial;
diff --git a/lib/Parse/ParseTentative.cpp b/lib/Parse/ParseTentative.cpp
index 3e00a8c0db..618c3e2bd4 100644
--- a/lib/Parse/ParseTentative.cpp
+++ b/lib/Parse/ParseTentative.cpp
@@ -660,6 +660,7 @@ Parser::isExpressionOrTypeSpecifierSimple(tok::TokenKind Kind) {
   case tok::kw___is_empty:
   case tok::kw___is_enum:
   case tok::kw___is_literal:
+  case tok::kw___is_literal_type:
   case tok::kw___is_pod:
   case tok::kw___is_polymorphic:
   case tok::kw___is_trivial:
diff --git a/test/SemaCXX/literal-type.cpp b/test/SemaCXX/literal-type.cpp
index 142dd756e5..8eff677a0f 100644
--- a/test/SemaCXX/literal-type.cpp
+++ b/test/SemaCXX/literal-type.cpp
@@ -1,6 +1,7 @@
 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++0x %s
 
 static_assert(__is_literal(int), "fail");
+static_assert(__is_literal_type(int), "fail"); // alternate spelling for GCC
 static_assert(__is_literal(void*), "fail");
 enum E { E1 };
 static_assert(__is_literal(E), "fail");