From ddaf523aa437c8f6386a5f40e527b6d21ecb1a36 Mon Sep 17 00:00:00 2001
From: Oliver Schneider <git-spam-no-reply9815368754983@oli-obk.de>
Date: Fri, 17 Nov 2017 13:13:02 +0100
Subject: The end of a span can be *before* the first char in a line

---
 src/librustc_errors/snippet.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/librustc_errors')

diff --git a/src/librustc_errors/snippet.rs b/src/librustc_errors/snippet.rs
index 2e8deeee5a5..69aade21c72 100644
--- a/src/librustc_errors/snippet.rs
+++ b/src/librustc_errors/snippet.rs
@@ -70,7 +70,7 @@ impl MultilineAnnotation {
 
     pub fn as_end(&self) -> Annotation {
         Annotation {
-            start_col: self.end_col - 1,
+            start_col: self.end_col.saturating_sub(1),
             end_col: self.end_col,
             is_primary: self.is_primary,
             label: self.label.clone(),
-- 
cgit 1.4.1-3-g733a5