From 1c53f7dd29e79bc1894959cad817b22f087689f7 Mon Sep 17 00:00:00 2001
From: Alon Zakai <azakai@google.com>
Date: Tue, 19 Jul 2022 16:03:01 -0700
Subject: [Strings] Add string.new GC variants (#4813)

---
 src/ir/effects.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/ir/effects.h')

diff --git a/src/ir/effects.h b/src/ir/effects.h
index 58480f0ff..43d4868d8 100644
--- a/src/ir/effects.h
+++ b/src/ir/effects.h
@@ -732,7 +732,10 @@ private:
       // we keep the code here simpler, but it does mean another optimization
       // cycle may be needed in some cases.
     }
-    void visitStringNew(StringNew* curr) {}
+    void visitStringNew(StringNew* curr) {
+      // traps when out of bounds in linear memory or ref is null
+      parent.implicitTrap = true;
+    }
     void visitStringConst(StringConst* curr) {}
     void visitStringMeasure(StringMeasure* curr) {
       // traps when ref is null.
-- 
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