Hi Bruno, On 4/29/24 12:02 AM, Bruno Haible wrote: > Which Cygwin version, please? > > Also, what is the gcc command line of this particular compilation unit? > (`make V=1`)
While you wait for the answer to this, I noticed that Cygwin does things similar to glibc. In sys/_types.h [1]: #define __need_size_t #define __need_wint_t #include <stddef.h> Hopefully that leads you down the right direction. [1] https://github.com/cygwin/cygwin/blob/579064bf4d408e99ed7556f36a3050c7ee99dee6/newlib/libc/include/sys/_types.h#L23 Collin