[wasm] Patch trapping position into stack trace

test/mjsunit/wasm/stack.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // clang-format off
 // Flags: --expose-wasm
 
 load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
@@ skipping 88 matching lines @@
 })();
 
 (function testWasmUnreachable() {
   try {
     module.exports.exec_unreachable();
     fail("expected wasm exception");
   } catch (e) {
     assertContains("unreachable", e.message);
     verifyStack(e.stack, [
         // isWasm               function   line  pos        file
-        // TODO(clemensh): pos should be 1
-        [    true,    "exec_unreachable",    1,   -1,       null],
+        [    true,    "exec_unreachable",    1,    1,       null],
         [   false, "testWasmUnreachable",  103,    0, "stack.js"],
-        [   false,                  null,  115,    0, "stack.js"]
+        [   false,                  null,  114,    0, "stack.js"]
     ]);
   }
 })();
 
 (function testWasmMemOutOfBounds() {
   try {
     module.exports.call_mem_out_of_bounds();
     fail("expected wasm exception");
   } catch (e) {
     assertContains("out of bounds", e.message);
     verifyStack(e.stack, [
         // isWasm                  function   line  pos        file
-        // TODO(clemensh): pos should be 3
-        [    true,                      "?",     2,  -1,       null],
+        [    true,                      "?",     2,   3,       null],
         [    true, "call_mem_out_of_bounds",     3,   1,       null],
-        [   false, "testWasmMemOutOfBounds",   119,   0, "stack.js"],
-        [   false,                     null,   132,   0, "stack.js"]
+        [   false, "testWasmMemOutOfBounds",   118,   0, "stack.js"],
+        [   false,                     null,   130,   0, "stack.js"]
     ]);
   }
 })();