On Fri, 21 Jan 2022, Jakub Jelinek via Gcc-patches wrote:
> 2022-01-21 Jakub Jelinek
>
> PR c++/104148
> * c-common.h (check_function_arguments_recurse): Add for_format
> arg.
> * c-common.cc (check_function_nonnull): Pass false to
> check_function_arguments_recur
Hi!
As can be seen on the testcase, GCC 11 no longer warns if the format
string is wrapped inside of ()s.
This regressed with r11-2457-gdf5cf47a978, which added
if (TREE_NO_WARNING (param)) return;
to check_function_arguments_recurse. That function is used with a callback
for two cases, for -Wfor
