cc -pthread  -Wall -Wextra -Werror=implicit-function-declaration locale/freelocale.c -o locale/freelocale -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv
relibc getrlimit(3, 0x7ffffffffc80): not implemented
relibc getrlimit(3, 0x7ffffffffba0): not implemented
relibc getrlimit(9, 0x7ffffffffb60): not implemented
relibc getrlimit(9, 0x7ffffffffb90): not implemented
relibc getrlimit(5, 0x7ffffffffb90): not implemented
relibc getrlimit(9, 0x7ffffffffb60): not implemented
locale/freelocale.c: In function 'main':
locale/freelocale.c:9:9: error: unknown type name 'locale_t'
    9 |         locale_t locale = newlocale(LC_ALL_MASK, "C", (locale_t) 0);
      |         ^~~~~~~~
locale/freelocale.c:9:27: error: implicit declaration of function 'newlocale'; did you mean 'setlocale'? [-Werror=implicit-function-declaration]
    9 |         locale_t locale = newlocale(LC_ALL_MASK, "C", (locale_t) 0);
      |                           ^~~~~~~~~
      |                           setlocale
locale/freelocale.c:9:37: error: 'LC_ALL_MASK' undeclared (first use in this function)
    9 |         locale_t locale = newlocale(LC_ALL_MASK, "C", (locale_t) 0);
      |                                     ^~~~~~~~~~~
locale/freelocale.c:9:37: note: each undeclared identifier is reported only once for each function it appears in
locale/freelocale.c:9:56: error: 'locale_t' undeclared (first use in this function); did you mean 'locale'?
    9 |         locale_t locale = newlocale(LC_ALL_MASK, "C", (locale_t) 0);
      |                                                        ^~~~~~~~
      |                                                        locale
locale/freelocale.c:9:65: error: expected ')' before numeric constant
    9 |         locale_t locale = newlocale(LC_ALL_MASK, "C", (locale_t) 0);
      |                                    ~                            ^~
      |                                                                 )
locale/freelocale.c:10:34: error: expected ')' before numeric constant
   10 |         if ( locale == (locale_t) 0 )
      |            ~                     ^~
      |                                  )
locale/freelocale.c:12:9: error: implicit declaration of function 'freelocale'; did you mean 'setlocale'? [-Werror=implicit-function-declaration]
   12 |         freelocale(locale);
      |         ^~~~~~~~~~
      |         setlocale
cc1: some warnings being treated as errors