From f61fe0514a43640dbdfcd8bb7c2c21f1a09618d2 Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Mon, 5 Feb 2024 10:43:33 +0000
Subject: [PATCH] procmail: fix `clang-16` build

Without the change `procmail` build fails as:

    cc -O _autotst.c -o _autotst -lm
    _autotst.c:1:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
    main()
    ^
    int
    1 error generated.
---
 pkgs/applications/misc/procmail/default.nix | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/misc/procmail/default.nix b/pkgs/applications/misc/procmail/default.nix
index ea299d73cbb0..661bbd22be85 100644
--- a/pkgs/applications/misc/procmail/default.nix
+++ b/pkgs/applications/misc/procmail/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl }:
+{ lib, stdenv, fetchurl, fetchpatch }:
 
 stdenv.mkDerivation rec {
   pname = "procmail";
@@ -9,6 +9,16 @@ stdenv.mkDerivation rec {
     sha256 = "UU6kMzOXg+ld+TIeeUdx5Ih7mCOsVf2yRpcCz2m9OYk=";
   };
 
+  patches = [
+    # Fix clang-16 and gcc-14 build failures:
+    #   https://github.com/BuGlessRB/procmail/pull/7
+    (fetchpatch {
+      name = "clang-16.patch";
+      url = "https://github.com/BuGlessRB/procmail/commit/8cfd570fd14c8fb9983859767ab1851bfd064b64.patch";
+      hash = "sha256-CaQeDKwF0hNOrxioBj7EzkCdJdsq44KwkfA9s8xK88g=";
+    })
+  ];
+
   # getline is defined differently in glibc now. So rename it.
   # Without the .PHONY target "make install" won't install anything on Darwin.
   postPatch = ''