From 6e9da38866e3990df440da63bbec39a90487e261 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?B=C3=A9n=C3=A9dikt=20Tran?=
 <10796600+picnixz@users.noreply.github.com>
Date: Wed, 6 Nov 2024 14:33:23 +0100
Subject: [PATCH] [3.13] gh-126313: Fix a crash in curses.napms() due to
 incorrect error handling (GH-126351) (#126493)

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                                      | 5 ++++-
 2 files changed, 6 insertions(+), 1 deletion(-)
 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 f926fa2f9c0..55038cf09c2 100644
--- a/Modules/_cursesmodule.c
+++ b/Modules/_cursesmodule.c
@@ -3688,7 +3688,10 @@ static int
 _curses_napms_impl(PyObject *module, int ms)
 /*[clinic end generated code: output=5f292a6a724491bd input=c6d6e01f2f1df9f7]*/
 {
-    PyCursesInitialised;
+    if (initialised != TRUE) {
+        PyErr_SetString(PyCursesError, "must call initscr() first");
+        return -1;
+    }
 
     return napms(ms);
 }