From 99516bbd67a0018c3c0bf94cb895896857d4263c Mon Sep 17 00:00:00 2001
From: Dawer <7803845+iDawer@users.noreply.github.com>
Date: Tue, 1 Jun 2021 17:21:00 +0500
Subject: minor: Avoid eprintln on panic

---
 crates/hir_ty/src/diagnostics/match_check/usefulness.rs | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

(limited to 'crates/hir_ty/src/diagnostics/match_check/usefulness.rs')

diff --git a/crates/hir_ty/src/diagnostics/match_check/usefulness.rs b/crates/hir_ty/src/diagnostics/match_check/usefulness.rs
index 83b094a89..bd76a606c 100644
--- a/crates/hir_ty/src/diagnostics/match_check/usefulness.rs
+++ b/crates/hir_ty/src/diagnostics/match_check/usefulness.rs
@@ -295,7 +295,7 @@ pub(crate) struct MatchCheckCtx<'a> {
     pub(crate) db: &'a dyn HirDatabase,
     /// Lowered patterns from arms plus generated by the check.
     pub(crate) pattern_arena: &'a RefCell<PatternArena>,
-    pub(crate) eprint_panic_context: &'a dyn Fn(),
+    pub(crate) panic_context: &'a dyn Fn() -> String,
 }
 
 impl<'a> MatchCheckCtx<'a> {
@@ -331,8 +331,7 @@ impl<'a> MatchCheckCtx<'a> {
 
     #[track_caller]
     pub(super) fn bug(&self, info: &str) -> ! {
-        (self.eprint_panic_context)();
-        panic!("bug: {}", info);
+        panic!("bug: {}\n{}", info, (self.panic_context)());
     }
 }
 
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