cc -pthread  -Wall -Wextra -Werror=implicit-function-declaration wctype/towlower_l.c -o wctype/towlower_l -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv
[cc@relibc::platform::sys:590 INFO] TODO: getrlimit(3, 0x7ffffffffbf0): not implemented
[cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(3, 0x7ffffffffb00): not implemented
[cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(9, 0x7ffffffffad0): not implemented
[cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(9, 0x7ffffffffb00): not implemented
[cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(5, 0x7ffffffffb00): not implemented
[cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(9, 0x7ffffffffad0): not implemented
wctype/towlower_l.c: In function 'main':
wctype/towlower_l.c:15:23: error: implicit declaration of function 'towlower_l'; did you mean 'towlower'? [-Werror=implicit-function-declaration]
   15 |         wchar_t wc3 = towlower_l(wc1, locale);
      |                       ^~~~~~~~~~
      |                       towlower
cc1: some warnings being treated as errors