diff --git a/spec/rubyspec/optional/capi/ext/thread_spec.c b/spec/rubyspec/optional/capi/ext/thread_spec.c index 78e8183129..d2e937fd2a 100644 --- a/spec/rubyspec/optional/capi/ext/thread_spec.c +++ b/spec/rubyspec/optional/capi/ext/thread_spec.c @@ -7,6 +7,9 @@ #if HAVE_UNISTD_H #include #endif +#if defined(_WIN32) +#define pipe(p) rb_w32_pipe(p) +#endif #ifdef __cplusplus extern "C" {