From 3c94914f0c87ba00987e515063dcc9e079a8918d Mon Sep 17 00:00:00 2001
From: hosseind75 <dindar95@bk.ru>
Date: Tue, 29 Sep 2020 18:14:07 +0330
Subject: [PATCH] rebase with master

---
 src/driver.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/driver.rs b/src/driver.rs
index 0b324775b0d..bf9110b4349 100644
--- a/src/driver.rs
+++ b/src/driver.rs
@@ -277,7 +277,9 @@ fn report_clippy_ice(info: &panic::PanicInfo<'_>, bug_report_url: &str) {
     // If backtraces are enabled, also print the query stack
     let backtrace = env::var_os("RUST_BACKTRACE").map_or(false, |x| &x != "0");
 
-    TyCtxt::try_print_query_stack(&handler, Some(2), Some(backtrace));
+    let num_frames = if backtrace { None } else { Some(2) };
+
+    TyCtxt::try_print_query_stack(&handler, num_frames);
 }
 
 fn toolchain_path(home: Option<String>, toolchain: Option<String>) -> Option<PathBuf> {