Mercurial > urweb
annotate tests/focus.ur @ 2297:6d56080f495c
Fix a read-after-free bug using a timestamp check
| author | Adam Chlipala <adam@chlipala.net> |
|---|---|
| date | Thu, 19 Nov 2015 13:18:58 -0500 |
| parents | ffd7ed3bc0b7 |
| children |
| rev | line source |
|---|---|
| adam@1785 | 1 fun main () : transaction page = |
| adam@1785 | 2 id1 <- fresh; |
| adam@1785 | 3 id2 <- fresh; |
| adam@1785 | 4 s1 <- source ""; |
| adam@1785 | 5 s2 <- source ""; |
| adam@1785 | 6 which <- source False; |
| adam@1785 | 7 |
| adam@1785 | 8 return <xml><body> |
| adam@1785 | 9 <ctextbox id={id1} source={s1}/> |
| adam@1785 | 10 <ctextbox id={id2} source={s2}/> |
| adam@1785 | 11 <button onclick={fn _ => w <- get which; |
| adam@1785 | 12 set which (not w); |
| adam@1785 | 13 giveFocus (if w then id1 else id2)}/> |
| adam@1785 | 14 </body></xml> |