From 353b6e83c55d52b47a2a35063406324cec7237c4 Mon Sep 17 00:00:00 2001
From: Patrick Schleizer <adrelanos@whonix.org>
Date: Wed, 21 May 2025 07:20:13 -0400
Subject: [PATCH] test that `wc` is functional

https://github.com/Kicksecure/security-misc/pull/305#issuecomment-2892378246
---
 usr/libexec/security-misc/apt-get-update-sanity-test | 10 ++++++++++
 usr/libexec/security-misc/pam-info                   | 10 ++++++++++
 2 files changed, 20 insertions(+)

diff --git a/usr/libexec/security-misc/apt-get-update-sanity-test b/usr/libexec/security-misc/apt-get-update-sanity-test
index a5b7709..f96a4f8 100755
--- a/usr/libexec/security-misc/apt-get-update-sanity-test
+++ b/usr/libexec/security-misc/apt-get-update-sanity-test
@@ -7,5 +7,15 @@ set -x
 set -e
 set -o pipefail
 
+if ! printf '%s\n' | wc -l >/dev/null ; then
+  printf "\
+$0: ERROR: command 'wc' test failed! Do not ignore this!
+
+'wc' can core dump. Example:
+zsh: illegal hardware instruction (core dumped) wc -l
+https://github.com/rspamd/rspamd/issues/5137" >&2
+  exit 1
+fi
+
 wc -L "/var/lib/apt/lists/"*InRelease
 wc -L "/var/lib/apt/lists/"*InRelease | awk '$1 > 1024 {print; exit 1}'
diff --git a/usr/libexec/security-misc/pam-info b/usr/libexec/security-misc/pam-info
index 0f30faf..3ac9a5d 100755
--- a/usr/libexec/security-misc/pam-info
+++ b/usr/libexec/security-misc/pam-info
@@ -35,6 +35,16 @@ ERROR: Please report this bug." >&2
 
 trap error_handler ERR
 
+if ! printf '%s\n' | wc -l >/dev/null ; then
+  printf "\
+$0: ERROR: command 'wc' test failed! Do not ignore this!
+
+'wc' can core dump. Example:
+zsh: illegal hardware instruction (core dumped) wc -l
+https://github.com/rspamd/rspamd/issues/5137" >&2
+  exit 1
+fi
+
 ## Named constants.
 pam_faillock_state_dir="/var/lib/security-misc/faillock"