From 85dd4048df50d50b6b6025b56a4e1097b2b300f0 Mon Sep 17 00:00:00 2001
From: Jim Blandy <jimb@red-bean.com>
Date: Mon, 27 Nov 2023 18:16:22 -0800
Subject: [PATCH] [naga] Improve snapshot output when validation fails.

---
 naga/tests/snapshots.rs | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/naga/tests/snapshots.rs b/naga/tests/snapshots.rs
index 80cf87dc1e..35370e7f07 100644
--- a/naga/tests/snapshots.rs
+++ b/naga/tests/snapshots.rs
@@ -275,7 +275,13 @@ fn check_targets(
 
     let info = naga::valid::Validator::new(naga::valid::ValidationFlags::all(), capabilities)
         .validate(module)
-        .unwrap_or_else(|_| panic!("Naga module validation failed on test '{}'", name.display()));
+        .unwrap_or_else(|err| {
+            panic!(
+                "Naga module validation failed on test `{}`:\n{:?}",
+                name.display(),
+                err
+            );
+        });
 
     #[cfg(feature = "compact")]
     let info = {
@@ -292,10 +298,11 @@ fn check_targets(
 
         naga::valid::Validator::new(naga::valid::ValidationFlags::all(), capabilities)
             .validate(module)
-            .unwrap_or_else(|_| {
+            .unwrap_or_else(|err| {
                 panic!(
-                    "Post-compaction module validation failed on test '{}'",
-                    name.display()
+                    "Post-compaction module validation failed on test '{}':\n<{:?}",
+                    name.display(),
+                    err,
                 )
             })
     };