Fix handling of macro definitions.

Now correctly formats:
 #define A (1)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173264 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 6 insertions, 1 deletions

diff --git a/lib/Format/UnwrappedLineParser.cpp b/lib/Format/UnwrappedLineParser.cpp
index 1b39442610..ad641a29b1 100644
--- a/lib/Format/UnwrappedLineParser.cpp
+++ b/lib/Format/UnwrappedLineParser.cpp
@@ -240,7 +240,8 @@ void UnwrappedLineParser::parsePPDefine() {
     return;
   }
   nextToken();
-  if (FormatTok.Tok.getKind() == tok::l_paren) {
+  if (FormatTok.Tok.getKind() == tok::l_paren &&
+      FormatTok.WhiteSpaceLength == 0) {
     parseParens();
   }
   addUnwrappedLine();
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 806a7eb9c0..708b7d8086 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -742,6 +742,10 @@ TEST_F(FormatTest, HashInMacroDefinition) {
   verifyFormat("#define A void # ## #", getLLVMStyleWithColumns(22));
 }
 
+TEST_F(FormatTest, RespectWhitespaceInMacroDefinitions) {
+  verifyFormat("#define A (1)");
+}
+
 TEST_F(FormatTest, IndentPreprocessorDirectivesAtZero) {
   EXPECT_EQ("{\n  {\n#define A\n  }\n}", format("{{\n#define A\n}}"));
 }