From 2ffe88c1f076977253409d5732617aec02ece016 Mon Sep 17 00:00:00 2001
From: Jason Ish <jason.ish@oisf.net>
Date: Fri, 17 Dec 2021 16:25:47 -0600
Subject: [PATCH] rust: remove feature function-macro

The function macro existed so it would only be enabled on Rust
versions that supported.  Now that our MSRV is 1.41, which is
greater than 1.38 we can assume we always have support for
this macro.
---
 configure.ac       | 4 ----
 rust/Cargo.toml.in | 1 -
 rust/src/log.rs    | 9 ---------
 3 files changed, 14 deletions(-)

diff --git a/configure.ac b/configure.ac
index ce025798e4..46a4982726 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2246,10 +2246,6 @@ fi
     AC_MSG_RESULT(yes)
 
     RUST_FEATURES=""
-    AS_VERSION_COMPARE([$rustc_version], [1.38.0],
-        [],
-	[RUST_FEATURES="$RUST_FEATURES function-macro"],
-	[RUST_FEATURES="$RUST_FEATURES function-macro"])
 
     rust_vendor_comment="# "
     have_rust_vendor="no"
diff --git a/rust/Cargo.toml.in b/rust/Cargo.toml.in
index 3f484c339e..6febd4c532 100644
--- a/rust/Cargo.toml.in
+++ b/rust/Cargo.toml.in
@@ -20,7 +20,6 @@ lua_int8 = ["lua"]
 strict = []
 debug = []
 debug-validate = []
-function-macro = []
 
 [dependencies]
 nom = "~5.1.2"
diff --git a/rust/src/log.rs b/rust/src/log.rs
index b61c6cddaf..83c1dc357b 100644
--- a/rust/src/log.rs
+++ b/rust/src/log.rs
@@ -84,7 +84,6 @@ pub fn sclog(level: Level, file: &str, line: u32, function: &str,
 // This macro has been borrowed from https://github.com/popzxc/stdext-rs, which
 // is released under the MIT license as there is currently no macro in Rust
 // to provide the function name.
-#[cfg(feature = "function-macro")]
 #[macro_export(local_inner_macros)]
 macro_rules!function {
     () => {{
@@ -98,14 +97,6 @@ macro_rules!function {
     }}
 }
 
-// Rust versions less than 1.38 can not use the above macro, so keep the old
-// macro around for a while.
-#[cfg(not(feature = "function-macro"))]
-#[macro_export(local_inner_macros)]
-macro_rules!function {
-    () => {{ "<rust>" }}
-}
-
 #[macro_export]
 macro_rules!do_log {
     ($level:expr, $code:expr, $($arg:tt)*) => {
-- 
2.47.2