[asm.js] [wasm] Store function start position for stack check

test/mjsunit/wasm/stack.js

Index: test/mjsunit/wasm/stack.js
diff --git a/test/mjsunit/wasm/stack.js b/test/mjsunit/wasm/stack.js
index 538c10e543a0e00c12ccd43afa0ea11cfba57887..650b1436a206e1352b75e7d346589c7a947ed2fe 100644
--- a/test/mjsunit/wasm/stack.js
+++ b/test/mjsunit/wasm/stack.js
@@ -145,5 +145,13 @@ Error.prepareStackTrace = function(error, frames) {
     fail("expected wasm exception");
   } catch (e) {
     assertEquals("Maximum call stack size exceeded", e.message, "trap reason");
+    assertTrue(e.stack.length >= 4, "expected at least 4 stack entries");
+    verifyStack(e.stack.splice(0, 4), [
+        // isWasm     function  line  pos  file
+        [    true, "recursion",    0,   0, null],
+        [    true, "recursion",    0,   3, null],
+        [    true, "recursion",    0,   3, null],
+        [    true, "recursion",    0,   3, null]
+    ]);
   }
 })();