bpo-9566: Fix size_t=>int downcast warnings (#5230)

* Use wider types (int => Py_ssize_t) to avoid integer overflows.
* Fix gc.get_freeze_count(): use Py_ssize_t type rather than int, since gc_list_size() returns a Py_ssize_t.

1 files changed, 4 insertions, 4 deletions

diff --git a/Python/pathconfig.c b/Python/pathconfig.c
index 7ebd69bf62..6de5481bc8 100644
--- a/Python/pathconfig.c
+++ b/Python/pathconfig.c
@@ -367,13 +367,12 @@ _Py_FindEnvConfigValue(FILE *env_file, const wchar_t *key,
     fseek(env_file, 0, SEEK_SET);
     while (!feof(env_file)) {
         char * p = fgets(buffer, MAXPATHLEN*2, env_file);
-        wchar_t *tmpbuffer;
-        int n;
 
         if (p == NULL) {
             break;
         }
-        n = strlen(p);
+
+        size_t n = strlen(p);
         if (p[n - 1] != '\n') {
             /* line has overflowed - bail */
             break;
@@ -382,7 +381,8 @@ _Py_FindEnvConfigValue(FILE *env_file, const wchar_t *key,
             /* Comment - skip */
             continue;
         }
-        tmpbuffer = _Py_DecodeUTF8_surrogateescape(buffer, n);
+
+        wchar_t *tmpbuffer = _Py_DecodeUTF8_surrogateescape(buffer, n);
         if (tmpbuffer) {
             wchar_t * state;
             wchar_t * tok = wcstok(tmpbuffer, L" \t\r\n", &state);