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-rw-r--r--gcc/c-lex.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/c-lex.h b/gcc/c-lex.h
index 255de212398..7d73ab5d366 100644
--- a/gcc/c-lex.h
+++ b/gcc/c-lex.h
@@ -81,7 +81,7 @@ extern void position_after_white_space PROTO((void));
extern int check_newline PROTO((void));
extern int yylex PROTO((void));
-extern void yyerror PROTO((char *));
+extern void yyerror PROTO((const char *));
extern void forget_protocol_qualifiers PROTO((void));
extern void remember_protocol_qualifiers PROTO((void));
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