return freopen(filename, otype, stream);
}
+#undef fflush
+int mingw_fflush(FILE *stream)
+{
+ int ret = fflush(stream);
+
+ /*
+ * write() is used behind the scenes of stdio output functions.
+ * Since git code does not check for errors after each stdio write
+ * operation, it can happen that write() is called by a later
+ * stdio function even if an earlier write() call failed. In the
+ * case of a pipe whose readable end was closed, only the first
+ * call to write() reports EPIPE on Windows. Subsequent write()
+ * calls report EINVAL. It is impossible to notice whether this
+ * fflush invocation triggered such a case, therefore, we have to
+ * catch all EINVAL errors whole-sale.
+ */
+ if (ret && errno == EINVAL)
+ errno = EPIPE;
+
+ return ret;
+}
+
/*
* The unit of FILETIME is 100-nanoseconds since January 1, 1601, UTC.
* Returns the 100-nanoseconds ("hekto nanoseconds") since the epoch.