commit 3e753e279d2457cf16b45be88032c4a117f9adb3
author Eli Friedman <eli.friedman@gmail.com> Tue Jun 02 07:55:39 2009 +0000
committer Eli Friedman <eli.friedman@gmail.com> Tue Jun 02 07:55:39 2009 +0000
tree 3b8acdff32cec6b25530ea5f785709c22225143b
parent 354e53da656237e25518b3fafa3bf84de6e6f57e

PR4288: Make -dD (dump macros with preprocessed source) play nicely with 
# line directives.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72724 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Frontend/PrintPreprocessedOutput.cpp

diff --git a/lib/Frontend/PrintPreprocessedOutput.cpp b/lib/Frontend/PrintPreprocessedOutput.cpp
index e79453c..89d099c 100644
--- a/lib/Frontend/PrintPreprocessedOutput.cpp
+++ b/lib/Frontend/PrintPreprocessedOutput.cpp
@@ -87,6 +87,7 @@
 private:
   unsigned CurLine;
   bool EmittedTokensOnThisLine;
+  bool EmittedMacroOnThisLine;
   SrcMgr::CharacteristicKind FileType;
   llvm::SmallString<512> CurFilename;
   bool Initialized;
@@ -100,6 +101,7 @@
     CurLine = 0;
     CurFilename += "<uninit>";
     EmittedTokensOnThisLine = false;
+    EmittedMacroOnThisLine = false;
     FileType = SrcMgr::C_User;
     Initialized = false;
   }
@@ -130,9 +132,10 @@
 void PrintPPOutputPPCallbacks::WriteLineInfo(unsigned LineNo,
                                              const char *Extra,
                                              unsigned ExtraLen) {
-  if (EmittedTokensOnThisLine) {
+  if (EmittedTokensOnThisLine || EmittedMacroOnThisLine) {
     OS << '\n';
     EmittedTokensOnThisLine = false;
+    EmittedMacroOnThisLine = false;
   }
 
   OS << '#' << ' ' << LineNo << ' ' << '"';
@@ -161,11 +164,12 @@
     
     CurLine = LineNo;
     
-    if (!EmittedTokensOnThisLine)
+    if (!EmittedTokensOnThisLine && !EmittedMacroOnThisLine)
       return true;
     
     OS << '\n';
     EmittedTokensOnThisLine = false;
+    EmittedMacroOnThisLine = false;
     return true;
   }
 
@@ -260,6 +264,7 @@
   
   MoveToLine(MI->getDefinitionLoc());
   PrintMacroDefinition(*II, *MI, PP, OS);
+  EmittedMacroOnThisLine = true;
 }
 
 

test/Preprocessor/dump-macros-spacing.c

diff --git a/test/Preprocessor/dump-macros-spacing.c b/test/Preprocessor/dump-macros-spacing.c
new file mode 100644
index 0000000..335e37c
--- /dev/null
+++ b/test/Preprocessor/dump-macros-spacing.c
@@ -0,0 +1,13 @@
+// RUN: clang-cc -E -dD < %s | grep stdin | grep -v define
+#define A A
+/* 1
+ * 2
+ * 3
+ * 4
+ * 5
+ * 6
+ * 7
+ * 8
+ */
+#define B B
+