bpo-42591: Export missing Py_FrozenMain() symbol (GH-23730) (GH-23734)

vstinner · web-flow · commit 6b2ed3850948 · 2020-12-15T00:31:54.000+01:00
Export the Py_FrozenMain() function: fix a Python 3.9.0 regression. Python 3.9 uses -fvisibility=hidden and the function was not exported explicitly and so not exported. (cherry picked from commit b5c7b38)
diff --git a/Include/pylifecycle.h b/Include/pylifecycle.h
@@ -32,6 +32,8 @@ PyAPI_FUNC(void) _Py_NO_RETURN Py_Exit(int);
 /* Bootstrap __main__ (defined in Modules/main.c) */
 PyAPI_FUNC(int) Py_Main(int argc, wchar_t **argv);
 
+PyAPI_FUNC(int) Py_FrozenMain(int argc, char **argv);
+
 PyAPI_FUNC(int) Py_BytesMain(int argc, char **argv);
 
 /* In pathconfig.c */
diff --git a/Misc/NEWS.d/next/C API/2020-12-10-10-43-03.bpo-42591.CXNY8G.rst b/Misc/NEWS.d/next/C API/2020-12-10-10-43-03.bpo-42591.CXNY8G.rst
@@ -0,0 +1,3 @@
+Export the :c:func:`Py_FrozenMain` function: fix a Python 3.9.0 regression.
+Python 3.9 uses ``-fvisibility=hidden`` and the function was not exported
+explicitly and so not exported.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	+Export the :c:func:`Py_FrozenMain` function: fix a Python 3.9.0 regression.
	`2`	+Python 3.9 uses ``-fvisibility=hidden`` and the function was not exported
	`3`	`+explicitly and so not exported.`