msvcirt: Don't fail in streambuf_xsputn on 0xff character.

dbe6244f · Piotr Caban · Alexandre Julliard · 904bedb3 · dbe6244f
Commit dbe6244f authored Jan 05, 2023 by Piotr Caban Committed by Alexandre Julliard Jan 06, 2023
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msvcirt.c dlls/msvcirt/msvcirt.c +1 -1

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--- a/dlls/msvcirt/msvcirt.c
+++ b/dlls/msvcirt/msvcirt.c
@@ -820,7 +820,7 @@ int __thiscall streambuf_xsputn(streambuf *this, const char *data, int length)

    while (copied < length) {
        if (this->unbuffered || this->pptr == this->epptr) {
-            if (call_streambuf_overflow(this, data[copied]) == EOF)
+            if (call_streambuf_overflow(this, (unsigned char)data[copied]) == EOF)
                break;
            copied++;
        } else {