[wasm] Translate locations to positions properly

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 187db2d2feaa6bdf6b508c8911e33681c8773de8..b8fc5ffd4787547c95ad0a8a77eebad9d662e2a7 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -13423,15 +13423,7 @@ bool Script::GetPositionInfo(Handle<Script> script, int position,
                              PositionInfo* info, OffsetFlag offset_flag) {
   // For wasm, we do not create an artificial line_ends array, but do the
   // translation directly.
-  if (script->type() == Script::TYPE_WASM) {
-    Handle<WasmCompiledModule> compiled_module(
-        WasmCompiledModule::cast(script->wasm_compiled_module()));
-    DCHECK_LE(0, position);
-    return wasm::GetPositionInfo(compiled_module,
-                                 static_cast<uint32_t>(position), info);
-  }
-
-  InitLineEnds(script);
+  if (script->type() != Script::TYPE_WASM) InitLineEnds(script);
   return script->GetPositionInfo(position, info, offset_flag);
 }
 
@@ -13467,6 +13459,16 @@ bool Script::GetPositionInfo(int position, PositionInfo* info,
                              OffsetFlag offset_flag) const {
   DisallowHeapAllocation no_allocation;
 
+  // For wasm, we do not rely on the line_ends array, but do the translation
+  // directly.
+  if (type() == Script::TYPE_WASM) {
+    Handle<WasmCompiledModule> compiled_module(
+        WasmCompiledModule::cast(wasm_compiled_module()));
+    DCHECK_LE(0, position);
+    return wasm::GetPositionInfo(compiled_module,
+                                 static_cast<uint32_t>(position), info);
+  }
+
   if (line_ends()->IsUndefined(GetIsolate())) {
     // Slow mode: we do not have line_ends. We have to iterate through source.
     if (!GetPositionInfoSlow(this, position, info)) return false;