From f9c13d10060cc9d06f6cb5b757328f7268c1e483 Mon Sep 17 00:00:00 2001
From: Oliver Scherer <github@oli-obk.de>
Date: Wed, 1 May 2024 10:55:53 +0200
Subject: [PATCH] Don't ICE on dummy spans (rustc uses `0` for dummy values, we
 use usize::MAX)

---
 src/rustc_stderr.rs | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/src/rustc_stderr.rs b/src/rustc_stderr.rs
index f95a1756..eae180ee 100644
--- a/src/rustc_stderr.rs
+++ b/src/rustc_stderr.rs
@@ -67,12 +67,17 @@ fn span_line(span: &DiagnosticSpan, file: &Path, primary: bool) -> Option<spanne
             };
         }
     }
-    ((!primary || span.is_primary) && file_name == file).then_some(spanned::Span {
-        file: file_name,
-        line_start: span.line_start.try_into().unwrap(),
-        line_end: span.line_end.try_into().unwrap(),
-        col_start: span.column_start.try_into().unwrap(),
-        col_end: span.column_end.try_into().unwrap(),
+    ((!primary || span.is_primary) && file_name == file).then(|| {
+        let span = || {
+            Some(spanned::Span {
+                file: file_name,
+                line_start: span.line_start.try_into().ok()?,
+                line_end: span.line_end.try_into().ok()?,
+                col_start: span.column_start.try_into().ok()?,
+                col_end: span.column_end.try_into().ok()?,
+            })
+        };
+        span().unwrap_or_default()
     })
 }