[Python-checkins] cpython: posix_getcwd(): limit to INT_MAX on Windows

[victor.stinner]

https://hg.python.org/cpython/rev/4676c9b370a0
changeset:   100532:4676c9b370a0
parent:      100530:9caf236cbe6d
user:        Victor Stinner <victor.stinner at gmail.com>
date:        Mon Mar 14 18:07:53 2016 +0100
summary:
  posix_getcwd(): limit to INT_MAX on Windows

It's more to fix a conversion warning during compilation, I don't think that
Windows support current working directory larger than 2 GB ...

files:
  Modules/posixmodule.c |  10 ++++++++++
  1 files changed, 10 insertions(+), 0 deletions(-)


diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -3320,12 +3320,22 @@
     Py_BEGIN_ALLOW_THREADS
     do {
         buflen += chunk;
+#ifdef MS_WINDOWS
+        if (buflen > INT_MAX) {
+            PyErr_NoMemory();
+            break;
+        }
+#endif
         tmpbuf = PyMem_RawRealloc(buf, buflen);
         if (tmpbuf == NULL)
             break;
 
         buf = tmpbuf;
+#ifdef MS_WINDOWS
+        cwd = getcwd(buf, (int)buflen);
+#else
         cwd = getcwd(buf, buflen);
+#endif
     } while (cwd == NULL && errno == ERANGE);
     Py_END_ALLOW_THREADS
 

-- 
Repository URL: https://hg.python.org/cpython