kakoune: fix build with gcc>=12

srcpkgs/kakoune/patches/d1ea2ffa600fd2a7b14e415b68ceedba3325c5db.patch

@@ -0,0 +1,56 @@
+From d1ea2ffa600fd2a7b14e415b68ceedba3325c5db Mon Sep 17 00:00:00 2001
+From: Tim Allen <screwtape@froup.com>
+Date: Sat, 12 Feb 2022 21:35:33 +1100
+Subject: [PATCH] Make Color::validate_alpha() a constexpr function.
+
+We call it from a constexpr constructor, so it needs to be constexpr itself.
+
+Fixes #4544.
+---
+ src/color.cc | 7 -------
+ src/color.hh | 7 ++++++-
+ 2 files changed, 6 insertions(+), 8 deletions(-)
+
+diff --git a/src/color.cc b/src/color.cc
+index b355b9cf13..dfe2e955b2 100644
+--- a/src/color.cc
++++ b/src/color.cc
+@@ -34,13 +34,6 @@ bool is_color_name(StringView color)
+     return contains(color_names, color);
+ }
+ 
+-void Color::validate_alpha()
+-{
+-    static_assert(RGB == 17);
+-    if (a < RGB)
+-        throw runtime_error("Colors alpha must be > 16");
+-}
+-
+ Color str_to_color(StringView color)
+ {
+     auto it = find_if(color_names, [&](const char* c){ return color == c; });
+diff --git a/src/color.hh b/src/color.hh
+index 943678edfb..85babd9800 100644
+--- a/src/color.hh
++++ b/src/color.hh
+@@ -1,6 +1,7 @@
+ #ifndef color_hh_INCLUDED
+ #define color_hh_INCLUDED
+ 
++#include "exception.hh"
+ #include "hash.hh"
+ #include "meta.hh"
+ #include "assert.hh"
+@@ -55,7 +56,11 @@ struct Color
+     }
+ 
+ private:
+-    void validate_alpha();
++    constexpr void validate_alpha() {
++        static_assert(RGB == 17);
++        if (a < RGB)
++            throw runtime_error("Colors alpha must be > 16");
++    }
+ };
+ 
+ constexpr bool operator==(Color lhs, Color rhs)