| commit-queue@webkit.org | 1f75637 | 2012-07-30 23:13:25 +0000 | [diff] [blame] | 1 | <html> |
| 2 | <head> |
| 3 | <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> |
| 4 | <style type="text/css"> |
| 5 | #telugu { |
| 6 | font-size: 2cm; |
| 7 | line-height: 1.5em; |
| 8 | font-family: "Lohit Telugu"; |
| 9 | } |
| 10 | </style> |
| 11 | <script> |
| 12 | var ITERATIONS = 10000; |
| 13 | |
| 14 | if (window.testRunner) |
| 15 | testRunner.waitUntilDone(); |
| 16 | |
| 17 | function mouseSelection() { |
| 18 | var body = document.body; |
| 19 | body.focus(); |
| 20 | |
| 21 | xStart = 0; |
| 22 | yStart = 0; |
| 23 | |
| 24 | if (window.eventSender) { |
| 25 | eventSender.mouseMoveTo(xStart, yStart); |
| 26 | eventSender.mouseDown(); |
| 27 | for(i=0;i<ITERATIONS;i++) { |
| 28 | randomCoord = randomCoordinate(); |
| 29 | eventSender.mouseMoveTo(randomCoord.x, randomCoord.y); |
| 30 | } |
| 31 | } |
| 32 | if (window.testRunnder) |
| 33 | testRunner.notifyDone(); |
| 34 | } |
| 35 | |
| 36 | function randomCoordinate(axis) { |
| 37 | return { x: Math.floor(Math.random()*window.innerWidth), |
| 38 | y: Math.floor(Math.random()* window.innerHeight) } |
| 39 | } |
| 40 | |
| 41 | </script> |
| 42 | </head> |
| 43 | <body onload="mouseSelection()"><p> |
| 44 | This test fuzzes HarfBuzzShaper::offsetForPosition to trigger an assertion in the downstream function characterIndexForXPosition(). |
| 45 | See https://bugs.webkit.org/show_bug.cgi?id=92376 - reason of the assertion being hit is a minuscule floating point inaccuracy |
| 46 | between an if condition that gates the call to characterIndexForXPosition and the actual argument that's then given to the function. |
| 47 | This test works on WebKit EFL, with the Ubuntu Telugu Lohit font installed to the EFL jhbuild font directory, like:</p> |
| 48 | <pre>$ cp /usr/share/fonts/truetype/ttf-telugu-fonts/lohit_te.ttf WebKitBuild/Dependencies/Source/webkitgtk-test-fonts-0.0.3</pre> |
| 49 | <p>Run with:</p> |
| 50 | <pre>$ WebKitBuild/Debug/bin/DumpRenderTree ManualTests/harfbuzz-mouse-selection-crash.html</pre> |
| 51 | <p>Before the change, this would crash 10/10 times. Test passes if it does not crash.</p> |
| 52 | <p id="telugu">చేనేత కార్మికుల సమస్యలను ప్రభుత్వం దృష్టికి తీసుకువెళ్లేందుకు సిరిసిల్లలో వైఎస్ఆర్ సిపి గౌరవాధ్యక్షురాలు విజయమ్మ చేపట్టినదీక్ష విజయవంతమైంది.</p> |
| 53 | </body> |
| 54 | </html> |
