bpo-30544: _io._WindowsConsoleIO.write raises the wrong error when Wr…

…iteConsoleW fails (#1912) * bpo-30544: _io._WindowsConsoleIO.write raises the wrong error when WriteConsoleW fails * bpo-30544: _io._WindowsConsoleIO.write raises the wrong error when WriteConsoleW fails
python · Jun 2, 2017 · 523776c · 523776c
1 parent 7a82f9c
commit 523776c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Modules/_io/winconsoleio.c b/Modules/_io/winconsoleio.c
@@ -1000,7 +1000,7 @@ _io__WindowsConsoleIO_write_impl(winconsoleio *self, Py_buffer *b)
     wlen = MultiByteToWideChar(CP_UTF8, 0, b->buf, len, wbuf, wlen);
     if (wlen) {
         res = WriteConsoleW(self->handle, wbuf, wlen, &n, NULL);
-        if (n < wlen) {
+        if (res && n < wlen) {
             /* Wrote fewer characters than expected, which means our
              * len value may be wrong. So recalculate it from the
              * characters that were written. As this could potentially