From: Victor Stinner <vstinner@python.org>
Date: Thu, 3 Oct 2019 21:17:00 +0000 (+0200)
Subject: bpo-38353: Fix calculate_argv0_path() for symlinks (GH-16549)
X-Git-Tag: v3.9.0a1~268
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=86ec5c65fe04ece16f3aada5292cc62726062ad0;p=thirdparty%2FPython%2Fcpython.git

bpo-38353: Fix calculate_argv0_path() for symlinks (GH-16549)

calculate_argv0_path() must read argv0_path link, not read
program_full_path link.
---

diff --git a/Modules/getpath.c b/Modules/getpath.c
index 4246d4ca5ac0..fca87c7b0ee9 100644
--- a/Modules/getpath.c
+++ b/Modules/getpath.c
@@ -959,7 +959,7 @@ calculate_argv0_path(PyCalculatePath *calculate, const wchar_t *program_full_pat
 #if HAVE_READLINK
     wchar_t tmpbuffer[MAXPATHLEN + 1];
     const size_t buflen = Py_ARRAY_LENGTH(tmpbuffer);
-    int linklen = _Py_wreadlink(program_full_path, tmpbuffer, buflen);
+    int linklen = _Py_wreadlink(argv0_path, tmpbuffer, buflen);
     while (linklen != -1) {
         if (_Py_isabs(tmpbuffer)) {
             /* tmpbuffer should never be longer than MAXPATHLEN,