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-rw-r--r--compat/winansi.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/compat/winansi.c b/compat/winansi.c
index a551de90eb..a11a0f16d2 100644
--- a/compat/winansi.c
+++ b/compat/winansi.c
@@ -140,6 +140,11 @@ static void write_console(unsigned char *str, size_t len)
/* convert utf-8 to utf-16 */
int wlen = xutftowcsn(wbuf, (char*) str, ARRAY_SIZE(wbuf), len);
+ if (wlen < 0) {
+ wchar_t *err = L"[invalid]";
+ WriteConsoleW(console, err, wcslen(err), &dummy, NULL);
+ return;
+ }
/* write directly to console */
WriteConsoleW(console, wbuf, wlen, &dummy, NULL);