cc -pthread  -Wall -Wextra -Werror=implicit-function-declaration stdio/open_memstream.c -o stdio/open_memstream -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
stdio/open_memstream.c: In function 'main':
stdio/open_memstream.c:11:20: error: implicit declaration of function 'open_memstream' [-Werror=implicit-function-declaration]
   11 |         FILE* fp = open_memstream(&buf, &size);
      |                    ^~~~~~~~~~~~~~
stdio/open_memstream.c:11:20: warning: initialization of 'FILE *' {aka 'struct FILE *'} from 'int' makes pointer from integer without a cast [-Wint-conversion]
cc1: some warnings being treated as errors