Fix <rdar://problem/6370288> clang ObjC rewriter: Too many _objc_symtab, _OBJC_SYMBOLS

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59301 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/Driver/RewriteObjC.cpp b/Driver/RewriteObjC.cpp
index 14971207a477afcade33e8aecb1524fc54069512..d4774467df040ec6b0c05b994aa65667dbb67053 100644 (file)
--- a/Driver/RewriteObjC.cpp
+++ b/Driver/RewriteObjC.cpp
@@ -3076,8 +3076,6 @@ void RewriteObjC::RewriteImplementations() {
   int ClsDefCount = ClassImplementation.size();
   int CatDefCount = CategoryImplementation.size();
   
-  if (ClsDefCount == 0 && CatDefCount == 0)
-    return;
   // Rewrite implemented methods
   for (int i = 0; i < ClsDefCount; i++)
     RewriteImplementationDecl(ClassImplementation[i]);
@@ -4131,7 +4129,8 @@ void RewriteObjC::HandleTranslationUnit(TranslationUnit& TU) {
   InsertText(SourceLocation::getFileLoc(MainFileID, 0), 
              Preamble.c_str(), Preamble.size(), false);
   
-  RewriteImplementations();
+  if (ClassImplementation.size() || CategoryImplementation.size())
+    RewriteImplementations();
   
   // Get the buffer corresponding to MainFileID.  If we haven't changed it, then
   // we are done.
@@ -4143,12 +4142,13 @@ void RewriteObjC::HandleTranslationUnit(TranslationUnit& TU) {
     fprintf(stderr, "No changes\n");
   }
 
-  // Rewrite Objective-c meta data*
-  std::string ResultStr;
-  SynthesizeMetaDataIntoBuffer(ResultStr);
-
-  // Emit metadata.
-  *OutFile << ResultStr;
+  if (ClassImplementation.size() || CategoryImplementation.size()) {
+    // Rewrite Objective-c meta data*
+    std::string ResultStr;
+    SynthesizeMetaDataIntoBuffer(ResultStr);
+    // Emit metadata.
+    *OutFile << ResultStr;
+  }
   OutFile->flush();
 }