mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-11-25 21:11:09 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

PyPcre_expand(): Fixed two memory leaks, where a PyString_FromString()

Browse source 
was appended to a list.  Lists are reference count neutral, so the
string must be DECREF'd.  Also added some checks for the return value
of PyList_Append().

Note: there are still some memory problems reported by Purify (I get
two Array Bounds Reads still and an Unitialized Memory Read).  Also,
in scanning the code, there appears to be some potential problems
where return values aren't checked.  To much to attack now though.
This commit is contained in:
Barry Warsaw 1999-02-01 17:09:00 +00:00
parent a61f4ac14d
commit 6aa42579be
1 changed files with 26 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

29
Modules/pcremodule.c
View file

@ -489,8 +489,19 @@ PyPcre_expand(self, args)
if (start!=i)
{
PyList_Append(results,
PyString_FromStringAndSize((char *)repl+start, i-start));
int status;
PyObject *s = PyString_FromStringAndSize(
(char *)repl+start, i-start);
if (s == NULL) {
Py_DECREF(results);
return NULL;
}
status = PyList_Append(results, s);
Py_DECREF(s);
if (status < 0) {
Py_DECREF(results);
return NULL;
}
total_len += i-start;
}
i++;
@ -574,7 +585,19 @@ PyPcre_expand(self, args)
if (start!=i)
{
PyList_Append(results, PyString_FromStringAndSize((char *)repl+start, i-start));
int status;
PyObject *s = PyString_FromStringAndSize((char *)repl+start,
i-start);
if (s == NULL) {
Py_DECREF(results);
return NULL;
}
status = PyList_Append(results, s);
Py_DECREF(s);
if (status < 0) {
Py_DECREF(results);
return NULL;
}
total_len += i-start;
}