[Python-checkins] cpython: Issue #9647: os.confstr() ensures that the second call to confstr() returns the

Fri Dec 5 22:52:32 CET 2014

https://hg.python.org/cpython/rev/a7a8947e9ce4
changeset: 93743:a7a8947e9ce4
user: Victor Stinner <victor.stinner at gmail.com>
date: Fri Dec 05 22:51:51 2014 +0100
summary:
 Issue #9647: os.confstr() ensures that the second call to confstr() returns the
same length.
files:
 Modules/posixmodule.c | 4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -14369,10 +14369,12 @@
 }
 
 if (len >= sizeof(buffer)) {
+ size_t len2;
 char *buf = PyMem_Malloc(len);
 if (buf == NULL)
 return PyErr_NoMemory();
- confstr(name, buf, len);
+ len2 = confstr(name, buf, len);
+ assert(len == len2);
 result = PyUnicode_DecodeFSDefaultAndSize(buf, len-1);
 PyMem_Free(buf);
 }
-- 
Repository URL: https://hg.python.org/cpython
