From 4375245d5d9f01cabb6e3fd6c637535e724eae38 Mon Sep 17 00:00:00 2001
From: Daniel Black <daniel@mariadb.org>
Date: Wed, 22 May 2024 17:43:17 +1000
Subject: [PATCH] MDEV-34206 compile failure: fmt use incompatible with
 libfmt-10.2.[2]+

Upstream libfmt commit https://github.com/fmtlib/fmt/commit/d70729215fba1d54862e407b626abf86ddf409bf
now requires the format function to be const.

Adjust the function prototype so it is const and can compile.
---
 sql/item_strfunc.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sql/item_strfunc.cc
+++ b/sql/item_strfunc.cc
@@ -1367,7 +1367,7 @@ bool Item_func_sformat::fix_length_and_d
 namespace fmt {
   template <> struct formatter<String>: formatter<string_view> {
     template <typename FormatContext>
-    auto format(String c, FormatContext& ctx) -> decltype(ctx.out()) {
+    auto format(String c, FormatContext& ctx) const -> decltype(ctx.out()) {
       string_view name = { c.ptr(), c.length() };
       return formatter<string_view>::format(name, ctx);
     };