commit 93ff8725b3f678586fbbc19d3d4b615b218300ff
author Steve Dower <steve.dower@microsoft.com> Sat Nov 19 19:03:54 2016 -0800
committer Steve Dower <steve.dower@microsoft.com> Sat Nov 19 19:03:54 2016 -0800
tree 41c7a495610c8f9f5f95216202dc3d876de58b95
parent 11f4326ca146ac744ebdfc23149fe3fb9a89e812

Issue #28732: Raise ValueError when argv[0] is empty.

Modules/posixmodule.c

diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 6170ff7..3e446a5 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -5210,6 +5210,15 @@
                 "spawnv() arg 2 must contain only strings");
             return NULL;
         }
+#ifdef MS_WINDOWS
+        if (i == 0 && !argvlist[0][0]) {
+            free_string_array(argvlist, i);
+            PyErr_SetString(
+                PyExc_ValueError,
+                "spawnv() arg 2 first element cannot be empty");
+            return NULL;
+        }
+#endif
     }
     argvlist[argc] = NULL;