cc -O2 -pipe  -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations stdio/va_list.c -o stdio/va_list -D_POSIX_C_SOURCE=202405L  -lm -lpthread 
stdio/va_list.c:2:1: error: unknown type name 'va_list'; did you mean '__va_list'?
va_list* foo;
^~~~~~~
__va_list
/usr/include/machine/_types.h:126:27: note: '__va_list' declared here
typedef __builtin_va_list       __va_list;
                                ^
1 error generated.