From 31701e1d90be15e892a4c35b87dda0a6a08725ed Mon Sep 17 00:00:00 2001
From: AN Long <aisk1988@gmail.com>
Date: Mon, 22 Jan 2024 00:25:43 +0800
Subject: [PATCH 1/4] gh-114257: Ignore the `FileNotFound` error in
 `ctypes.util._is_elf`

---
 Lib/ctypes/util.py                | 7 +++++--
 Lib/test/test_ctypes/test_find.py | 3 +++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/Lib/ctypes/util.py b/Lib/ctypes/util.py
index 0c2510e1619c8e..c550883e7c7d4b 100644
--- a/Lib/ctypes/util.py
+++ b/Lib/ctypes/util.py
@@ -96,8 +96,11 @@ def find_library(name):
     def _is_elf(filename):
         "Return True if the given file is an ELF file"
         elf_header = b'\x7fELF'
-        with open(filename, 'br') as thefile:
-            return thefile.read(4) == elf_header
+        try:
+            with open(filename, 'br') as thefile:
+                return thefile.read(4) == elf_header
+        except FileNotFoundError:
+            return False
 
     def _findLib_gcc(name):
         # Run GCC's linker with the -t (aka --trace) option and examine the
diff --git a/Lib/test/test_ctypes/test_find.py b/Lib/test/test_ctypes/test_find.py
index 66ff23e72b5e10..7732ff37308848 100644
--- a/Lib/test/test_ctypes/test_find.py
+++ b/Lib/test/test_ctypes/test_find.py
@@ -125,6 +125,9 @@ def test_find_library_with_ld(self):
              unittest.mock.patch("ctypes.util._findLib_gcc", lambda *args: None):
             self.assertNotEqual(find_library('c'), None)
 
+    def test_gh114257(self):
+        self.assertIsNone(find_library("libc"))
+
 
 if __name__ == "__main__":
     unittest.main()

From 5c119c15a8a86e7e52ee536f3aef48aff9c0aa9b Mon Sep 17 00:00:00 2001
From: "blurb-it[bot]" <43283697+blurb-it[bot]@users.noreply.github.com>
Date: Sun, 21 Jan 2024 16:33:00 +0000
Subject: [PATCH 2/4] =?UTF-8?q?=F0=9F=93=9C=F0=9F=A4=96=20Added=20by=20blu?=
 =?UTF-8?q?rb=5Fit.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst  | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst

diff --git a/Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst b/Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst
new file mode 100644
index 00000000000000..40cee711a373bf
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst
@@ -0,0 +1 @@
+Ignore the :exc:`FileNotFound` error in :func:`ctypes.util._is_elf` and just return ``False``.

From f9460834c7ffca39e7c26dfd1e0718d7db8efa8f Mon Sep 17 00:00:00 2001
From: AN Long <aisk1988@gmail.com>
Date: Tue, 23 Jan 2024 00:21:13 +0800
Subject: [PATCH 3/4] update news entry

---
 .../Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst     | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst b/Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst
index 40cee711a373bf..49a4c40f73215c 100644
--- a/Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst
+++ b/Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst
@@ -1 +1,2 @@
-Ignore the :exc:`FileNotFound` error in :func:`ctypes.util._is_elf` and just return ``False``.
+Dissmiss the :exc:`FileNotFound` error in :func:`ctypes.util.find_library` and
+just return ``None`` on Linux.

From deae7c64675b32e4e33bfe4851fcef6c0666d40f Mon Sep 17 00:00:00 2001
From: AN Long <aisk@users.noreply.github.com>
Date: Tue, 23 Jan 2024 00:35:36 +0800
Subject: [PATCH 4/4] Update
 Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst

---
 .../next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst b/Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst
index 49a4c40f73215c..6f02ff9e62617d 100644
--- a/Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst
+++ b/Misc/NEWS.d/next/Library/2024-01-21-16-32-55.gh-issue-114257.bCFld5.rst
@@ -1,2 +1,2 @@
-Dissmiss the :exc:`FileNotFound` error in :func:`ctypes.util.find_library` and
+Dismiss the :exc:`FileNotFound` error in :func:`ctypes.util.find_library` and
 just return ``None`` on Linux.