js/src/jit-test/tests/debug/Frame-eval-14.js@6474c204b198 (annotated)
js/src/jit-test/tests/debug/Frame-eval-14.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Test the corner case of accessing an unaliased variable of a block |
| michael@0 | 2 | // while the block is not live. |
| michael@0 | 3 | |
| michael@0 | 4 | var g = newGlobal(); |
| michael@0 | 5 | g.eval("function h() { debugger }"); |
| michael@0 | 6 | g.eval("function f() { let (x = 1, y) { (function() { y = 0 })(); h() } }"); |
| michael@0 | 7 | g.eval("var surprise = null"); |
| michael@0 | 8 | |
| michael@0 | 9 | var dbg = new Debugger(g); |
| michael@0 | 10 | dbg.onDebuggerStatement = function(hFrame) { |
| michael@0 | 11 | var fFrame = hFrame.older; |
| michael@0 | 12 | assertEq(fFrame.environment.getVariable('x'), 1); |
| michael@0 | 13 | assertEq(fFrame.environment.getVariable('y'), 0); |
| michael@0 | 14 | fFrame.eval("surprise = function() { return ++x }"); |
| michael@0 | 15 | assertEq(g.surprise(), 2); |
| michael@0 | 16 | } |
| michael@0 | 17 | g.f(); |
| michael@0 | 18 | assertEq(g.surprise !== null, true); |
| michael@0 | 19 | |
| michael@0 | 20 | // Either succeed or throw an error about 'x' not being live |
| michael@0 | 21 | try { |
| michael@0 | 22 | assertEq(g.surprise(), 3); |
| michael@0 | 23 | } catch (e) { |
| michael@0 | 24 | assertEq(e+'', 'Error: x is not live'); |
| michael@0 | 25 | } |
