From 3a967676f8f9c1d78d493b87c02490d78c5bc0f1 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Sat, 10 Feb 2018 07:03:35 -0800
Subject: [PATCH] Explain unusual debugging code in librustc
Introduced in #47828 to help track down some bugs, it landed a bit hastily so
this is intended on cleaning it up a bit.
---
src/librustc_resolve/resolve_imports.rs | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/src/librustc_resolve/resolve_imports.rs b/src/librustc_resolve/resolve_imports.rs
index 95a507ab9e351..8cb25f449b667 100644
--- a/src/librustc_resolve/resolve_imports.rs
+++ b/src/librustc_resolve/resolve_imports.rs
@@ -1026,9 +1026,14 @@ fn import_path_to_string(names: &[SpannedIdent],
if names.is_empty() {
import_directive_subclass_to_string(subclass)
} else {
- let x = format!("{}::{}",
- names_to_string(names),
- import_directive_subclass_to_string(subclass));
+ // Note that this code looks a little wonky, it's currently here to
+ // hopefully help debug #48116, but otherwise isn't intended to
+ // cause any problems.
+ let x = format!(
+ "{}::{}",
+ names_to_string(names),
+ import_directive_subclass_to_string(subclass),
+ );
assert!(!names.is_empty());
assert!(!x.starts_with("::"));
return x