Pass strings as const references.

It has refcounting, copy-on-write and all, but this is still better.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/util.h b/src/util.h
index dd2f3aa..2f362fd 100644
--- a/src/util.h
+++ b/src/util.h
@@ -384,7 +384,7 @@ QCString stripLeadingAndTrailingEmptyLines(const QCString &s,int &docLine);
 //                         const QCString &anchor="");
 
 bool updateLanguageMapping(const QCString &extension,const QCString &parser);
-SrcLangExt getLanguageFromFileName(const QCString fileName);
+SrcLangExt getLanguageFromFileName(const QCString& fileName);
 void initDefaultExtensionMapping();
 void addCodeOnlyMappings();