/opt/IBM/openxlC/17.1.1/bin/ibm-clang -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations search/tfind.c -o search/tfind -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -latomic
search/tfind.c:11:1: error: unknown type name 'posix_tnode'
posix_tnode *(*foo)(const void *, posix_tnode *const *, int(*)(const void *, const void *)) = tfind;
^
search/tfind.c:11:35: error: unknown type name 'posix_tnode'
posix_tnode *(*foo)(const void *, posix_tnode *const *, int(*)(const void *, const void *)) = tfind;
                                  ^
2 errors generated.