Fix for issue 15716: interpreter could crash when PYTHONEXECUTABLE was set on Mac OS X.
This is due to an off-by-one error: the allocated buffer didn't have room for a NUL
character at the end of the mbstowcs result.
diff --git a/Modules/main.c b/Modules/main.c
index 5b4a7e2..5d1d896 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -616,7 +616,7 @@
script. */
if ((p = Py_GETENV("PYTHONEXECUTABLE")) && *p != '\0') {
wchar_t* buffer;
- size_t len = strlen(p);
+ size_t len = strlen(p) + 1;
size_t r;
buffer = malloc(len * sizeof(wchar_t));