/opt/IBM/openxlC/17.1.1/bin/ibm-clang -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations termios/struct-winsize.c -o termios/struct-winsize -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -latomic
termios/struct-winsize.c:2:16: error: tentative definition has type 'struct winsize' that is never completed
struct winsize foo;
               ^
termios/struct-winsize.c:2:8: note: forward declaration of 'struct winsize'
struct winsize foo;
       ^
1 error generated.