/opt/IBM/openxlC/17.1.1/bin/ibm-clang -pthread -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations netdb/gai_strerror.c -o netdb/gai_strerror -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -latomic netdb/gai_strerror.c:5:15: error: incompatible function pointer types initializing 'const char *(*)(int)' with an expression of type 'char *(int)' [-Werror,-Wincompatible-function-pointer-types] const char *(*foo)(int) = gai_strerror; ^ ~~~~~~~~~~~~ 1 error generated.