--- a/mercurial/parsers.c Mon Sep 08 20:22:10 2014 +0200
+++ b/mercurial/parsers.c Mon Sep 08 20:57:44 2014 +0200
@@ -275,15 +275,20 @@
PyObject *fname = NULL, *cname = NULL, *entry = NULL;
char state, *cur, *str, *cpos;
int mode, size, mtime;
- unsigned int flen;
- int len, pos = 40;
+ unsigned int flen, len, pos = 40;
+ int readlen;
if (!PyArg_ParseTuple(args, "O!O!s#:parse_dirstate",
&PyDict_Type, &dmap,
&PyDict_Type, &cmap,
- &str, &len))
+ &str, &readlen))
goto quit;
+ if (readlen < 0)
+ goto quit;
+
+ len = readlen;
+
/* read parents */
if (len < 40)
goto quit;