yyerror takes a const char* instead of a char*

hlslang/MachineIndependent/hlslang.l

@@ -372,7 +372,7 @@ int PaParseString(char* source, TParseContext& parseContextLocal)
         return 0;
 }
 
-void yyerror(char *s)
+void yyerror(const char *s)
 {
     if (((TParseContext *)cpp->pC)->AfterEOF) {
         if (cpp->tokensBeforeEOF == 1) {

hlslang/MachineIndependent/hlslang.y

@@ -35,7 +35,7 @@ Jutta Degener, 1995
     #define parseContext (*((TParseContext*)(parseContextLocal)))
     #define YY_DECL int yylex(YYSTYPE* pyylval, void* parseContextLocal)
     #define YYLEX_PARAM (void*)(parseContextLocal)
-    extern void yyerror(char*);
+    extern void yyerror(const char*);
 #endif
 
 

tools/bison.simple

@@ -36,7 +36,7 @@ char *alloca ();
 #endif /* not HAVE_ALLOCA_H */
 #endif /* not __GNUC__ */
 
-extern void yyerror(char* s);
+extern void yyerror(const char* s);
 
 #ifndef alloca
 #ifdef __GNUC__