fix logic in __fwriting

e5cb55fe · Rich Felker · a0b56b94 · e5cb55fe
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src/stdio/ext.c src/stdio/ext.c +1 -1

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--- a/src/stdio/ext.c
+++ b/src/stdio/ext.c
@@ -14,7 +14,7 @@ int __fsetlocking(FILE *f, int type)

 int __fwriting(FILE *f)
 {
-	return f->wend > f->wpos;
+	return f->wend && f->wpos > f->wbase;
 }

 int __freading(FILE *f)