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-rw-r--r--stdio-common/printf.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/stdio-common/printf.h b/stdio-common/printf.h
index a11af02274..af8cf34fcc 100644
--- a/stdio-common/printf.h
+++ b/stdio-common/printf.h
@@ -113,7 +113,7 @@ extern int register_printf_function (int __spec, printf_function __func,
it returns a positive value representing the bit set in the USER
field in 'struct printf_info'. */
-extern int register_printf_modifier (wchar_t *__str) __wur __THROW;
+extern int register_printf_modifier (__const wchar_t *__str) __wur __THROW;
/* Register variable argument handler for user type. The return value