const improvement

Change-Id: I03815f33117a2927b1882d221f159a5de8d3ba78

1 files changed, 1 insertions, 1 deletions

diff --git a/compilerplugins/clang/plugin.hxx b/compilerplugins/clang/plugin.hxx
index 5af4b04619ce..ff868bf1718f 100644
--- a/compilerplugins/clang/plugin.hxx
+++ b/compilerplugins/clang/plugin.hxx
@@ -62,7 +62,7 @@ class Plugin
         // Returns location right after the end of the token that starts at the given location.
         SourceLocation locationAfterToken( SourceLocation location );
     protected:
-        DiagnosticBuilder report( DiagnosticsEngine::Level level, StringRef message, SourceLocation loc = SourceLocation());
+        DiagnosticBuilder report( DiagnosticsEngine::Level level, StringRef message, SourceLocation loc = SourceLocation()) const;
         bool ignoreLocation( SourceLocation loc );
         bool ignoreLocation( const Decl* decl );
         bool ignoreLocation( const Stmt* stmt );