gh-91256: Ensure help text has the program name even before getpath is called (GH-94929)

miss-islington · zooba · web-flow · commit bb8e20a329f8 · 2022-07-19T12:03:15.000-07:00
(cherry picked from commit 49aeff4) Co-authored-by: Steve Dower <steve.dower@python.org>
diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-07-17-15-54-29.gh-issue-91256.z7i7Q5.rst b/Misc/NEWS.d/next/Core and Builtins/2022-07-17-15-54-29.gh-issue-91256.z7i7Q5.rst
@@ -0,0 +1 @@
+Ensures the program name is known for help text during interpreter startup.
diff --git a/Python/initconfig.c b/Python/initconfig.c
@@ -2295,6 +2295,9 @@ config_parse_cmdline(PyConfig *config, PyWideStringList *warnoptions,
     const PyWideStringList *argv = &config->argv;
     int print_version = 0;
     const wchar_t* program = config->program_name;
+    if (!program && argv->length >= 1) {
+        program = argv->items[0];
+    }
 
     _PyOS_ResetGetOpt();
     do {

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+Ensures the program name is known for help text during interpreter startup.`