bpo-30544: _io._WindowsConsoleIO.write raises the wrong error when WriteConsoleW 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
diff --git a/Modules/_io/winconsoleio.c b/Modules/_io/winconsoleio.c
index 814462f..d51df7e 100644
--- a/Modules/_io/winconsoleio.c
+++ b/Modules/_io/winconsoleio.c
@@ -1000,7 +1000,7 @@
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