Found in GWT Release (e.g. 1.5.3, 1.6 RC):

trunk r7422

Detailed description (please be as specific as possible):

JsStackEmulator.LocationVisitor may separate JsArrayAccess's from invocations. This can cause the "this" value to be incorrect.

Shortest code snippet which demonstrates issue (please indicate where actual result differs from expected result):

Expected: correct=true Actual (with emulated stack & line numbers): correct=false

public void onModuleLoad() { Window.alert("correct=" + nativeTest()); }

private static native boolean nativeTest() /-{ var bar = { foo: function() { return this === bar; } } return bar'foo' }-/;

Workaround if you have one:

Remove JsStackEmulator.LocationVisitor.endVisit(JsArrayAccess x, JsContext<JsExpression> ctx)

I can look at it.

The problem should only come up for the receivers of function invocations. It should be enough, then, that JsStackEmulator not replace exp with anything syntactically different from exp.

Patch for review at http://gwt-code-reviews.appspot.com/132815 .

Fix committed at r7516 .