Get rid of use of "static const std::string".

src/compiler/preprocessor/DirectiveParser.cpp

@@ -38,19 +38,19 @@ enum DirectiveType
 
 DirectiveType getDirective(const pp::Token *token)
 {
-    static const std::string kDirectiveDefine("define");
-    static const std::string kDirectiveUndef("undef");
-    static const std::string kDirectiveIf("if");
-    static const std::string kDirectiveIfdef("ifdef");
-    static const std::string kDirectiveIfndef("ifndef");
-    static const std::string kDirectiveElse("else");
-    static const std::string kDirectiveElif("elif");
-    static const std::string kDirectiveEndif("endif");
-    static const std::string kDirectiveError("error");
-    static const std::string kDirectivePragma("pragma");
-    static const std::string kDirectiveExtension("extension");
-    static const std::string kDirectiveVersion("version");
-    static const std::string kDirectiveLine("line");
+    const char kDirectiveDefine[] = "define";
+    const char kDirectiveUndef[] = "undef";
+    const char kDirectiveIf[] = "if";
+    const char kDirectiveIfdef[] = "ifdef";
+    const char kDirectiveIfndef[] = "ifndef";
+    const char kDirectiveElse[] = "else";
+    const char kDirectiveElif[] = "elif";
+    const char kDirectiveEndif[] = "endif";
+    const char kDirectiveError[] = "error";
+    const char kDirectivePragma[] = "pragma";
+    const char kDirectiveExtension[] = "extension";
+    const char kDirectiveVersion[] = "version";
+    const char kDirectiveLine[] = "line";
 
     if (token->type != pp::Token::IDENTIFIER)
         return DIRECTIVE_NONE;
@@ -155,7 +155,7 @@ class DefinedParser : public Lexer
   protected:
     virtual void lex(Token *token)
     {
-        static const std::string kDefined("defined");
+        const char kDefined[] = "defined";
 
         mLexer->lex(token);
         if (token->type != Token::IDENTIFIER)

src/compiler/preprocessor/MacroExpander.cpp

@@ -194,8 +194,8 @@ bool MacroExpander::expandMacro(const Macro &macro,
 
         if (macro.predefined)
         {
-            static const std::string kLine = "__LINE__";
-            static const std::string kFile = "__FILE__";
+            const char kLine[] = "__LINE__";
+            const char kFile[] = "__FILE__";
 
             assert(replacements->size() == 1);
             Token& repl = replacements->front();