1 files changed, 7 insertions, 0 deletions

diff --git a/win32/mingw.c b/win32/mingw.c
index 4721f89cb..51011eb88 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -149,6 +149,13 @@ FILE *mingw_fopen (const char *filename, const char *mode)
         return fopen(filename, mode);
 }
 
+#undef dup2
+int mingw_dup2 (int fd, int fdto)
+{
+        int ret = dup2(fd, fdto);
+        return ret != -1 ? fdto : -1;
+}
+
 static inline time_t filetime_to_time_t(const FILETIME *ft)
 {
         long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;