From a28343a33ed28b4d5c83c37e350aceaf09b5246f Mon Sep 17 00:00:00 2001
From: Sam Clegg <sbc@chromium.org>
Date: Thu, 5 Dec 2019 13:09:21 -0600
Subject: Add string parameter to WASM_UNREACHABLE (#2499)

This works more like llvm's unreachable handler in that is preserves
information even in release builds.
---
 src/ir/branch-utils.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/ir/branch-utils.h')

diff --git a/src/ir/branch-utils.h b/src/ir/branch-utils.h
index 53279eee6..a22301e54 100644
--- a/src/ir/branch-utils.h
+++ b/src/ir/branch-utils.h
@@ -49,7 +49,7 @@ inline bool isBranchReachable(Expression* expr) {
   } else if (auto* br = expr->dynCast<BrOnExn>()) {
     return isBranchReachable(br);
   }
-  WASM_UNREACHABLE();
+  WASM_UNREACHABLE("unexpected expression type");
 }
 
 inline std::set<Name> getUniqueTargets(Break* br) { return {br->name}; }
@@ -90,7 +90,7 @@ inline bool replacePossibleTarget(Expression* branch, Name from, Name to) {
       worked = true;
     }
   } else {
-    WASM_UNREACHABLE();
+    WASM_UNREACHABLE("unexpected expression type");
   }
   return worked;
 }
-- 
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