/opt/IBM/openxlC/17.1.1/bin/ibm-clang -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations dlfcn/dladdr.c -o dlfcn/dladdr -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -latomic
dlfcn/dladdr.c:5:34: error: unknown type name 'Dl_info_t'
int (*foo)(const void *restrict, Dl_info_t *restrict) = dladdr;
                                 ^
dlfcn/dladdr.c:5:57: error: use of undeclared identifier 'dladdr'
int (*foo)(const void *restrict, Dl_info_t *restrict) = dladdr;
                                                        ^
2 errors generated.