From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 compiler/rustc_builtin_macros/src/log_syntax.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 compiler/rustc_builtin_macros/src/log_syntax.rs

(limited to 'compiler/rustc_builtin_macros/src/log_syntax.rs')

diff --git a/compiler/rustc_builtin_macros/src/log_syntax.rs b/compiler/rustc_builtin_macros/src/log_syntax.rs
new file mode 100644
index 000000000..ede34a761
--- /dev/null
+++ b/compiler/rustc_builtin_macros/src/log_syntax.rs
@@ -0,0 +1,14 @@
+use rustc_ast::tokenstream::TokenStream;
+use rustc_ast_pretty::pprust;
+use rustc_expand::base;
+
+pub fn expand_log_syntax<'cx>(
+    _cx: &'cx mut base::ExtCtxt<'_>,
+    sp: rustc_span::Span,
+    tts: TokenStream,
+) -> Box<dyn base::MacResult + 'cx> {
+    println!("{}", pprust::tts_to_string(&tts));
+
+    // any so that `log_syntax` can be invoked as an expression and item.
+    base::DummyResult::any_valid(sp)
+}
-- 
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