From 19d935843727fff93b2c0e09a63fd32c0d97098d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?B=C3=A9n=C3=A9dikt=20Tran?=
 <10796600+picnixz@users.noreply.github.com>
Date: Sun, 3 Nov 2024 16:08:34 +0100
Subject: [PATCH] gh-126313: Fix a crash in curses.napms() due to incorrect
 error handling (GH-126351)

---
 .../Library/2024-11-03-09-42-42.gh-issue-126313.EFP6Dl.rst | 2 ++
 Modules/_cursesmodule.c                                    | 7 +++++--
 2 files changed, 7 insertions(+), 2 deletions(-)
 create mode 100644 Misc/NEWS.d/next/Library/2024-11-03-09-42-42.gh-issue-126313.EFP6Dl.rst

diff --git a/Misc/NEWS.d/next/Library/2024-11-03-09-42-42.gh-issue-126313.EFP6Dl.rst b/Misc/NEWS.d/next/Library/2024-11-03-09-42-42.gh-issue-126313.EFP6Dl.rst
new file mode 100644
index 00000000000..dad348d8898
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-11-03-09-42-42.gh-issue-126313.EFP6Dl.rst
@@ -0,0 +1,2 @@
+Fix an issue in :func:`curses.napms` when :func:`curses.initscr` has not yet
+been called. Patch by Bénédikt Tran.
diff --git a/Modules/_cursesmodule.c b/Modules/_cursesmodule.c
index 27d5df08de9..040ffa81153 100644
--- a/Modules/_cursesmodule.c
+++ b/Modules/_cursesmodule.c
@@ -3815,8 +3815,11 @@ static int
 _curses_napms_impl(PyObject *module, int ms)
 /*[clinic end generated code: output=5f292a6a724491bd input=c6d6e01f2f1df9f7]*/
 {
-    PyCursesStatefulInitialised(module);
-
+    if (!_PyCursesStatefulCheckFunction(module,
+                                        curses_initscr_called,
+                                        "initscr")) {
+        return -1;
+    }
     return napms(ms);
 }