fix strncpy call (uninitialized memory read)

ec498276 · Guido van Rossum · badadd21 · ec498276
Kaydet (Commit) ec498276 authored Ock 20, 1995 tarafından Guido van Rossum
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parsetok.c Parser/parsetok.c +2 -1

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--- a/Parser/parsetok.c
+++ b/Parser/parsetok.c
@@ -168,7 +168,8 @@ parsetok(tok, g, start, err_ret)
 			int len = tok->inp - tok->buf;
 			err_ret->text = malloc(len + 1);
 			if (err_ret->text != NULL) {
-				strncpy(err_ret->text, tok->buf, len+1);
+				if (len > 0)
+					strncpy(err_ret->text, tok->buf, len);
 				err_ret->text[len] = '\0';
 			}
 		}