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-rw-r--r--gcc/c-common.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/c-common.h b/gcc/c-common.h
index e79a3929087..7f47c2e457b 100644
--- a/gcc/c-common.h
+++ b/gcc/c-common.h
@@ -826,7 +826,7 @@ extern void check_function_format (tree, int, tree *);
extern void set_Wformat (int);
extern tree handle_format_attribute (tree *, tree, tree, int, bool *);
extern tree handle_format_arg_attribute (tree *, tree, tree, int, bool *);
-extern bool attribute_takes_identifier_p (tree);
+extern bool attribute_takes_identifier_p (const_tree);
extern int c_common_handle_option (size_t code, const char *arg, int value);
extern bool c_common_missing_argument (const char *opt, size_t code);
extern tree c_common_type_for_mode (enum machine_mode, int);