Bug 262817

Summary:	[Win] fast/canvas/canvas-pattern-modify.html is randomly failing
Product:	WebKit	Reporter:	Fujii Hironori <Hironori.Fujii>
Component:	Platform	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Fujii Hironori 2023-10-06 15:47:54 PDT

[Win] fast/canvas/canvas-pattern-modify.html is randomly failing

https://results.webkit.org/?suite=layout-tests&test=fast%2Fcanvas%2Fcanvas-pattern-modify.html&platform=wincairo

https://build.webkit.org/results/WinCairo-64-bit-Release-Tests/269007@main%20(2349)/fast/canvas/canvas-pattern-modify-diff.txt

--- C:\BW\WinCairo-64-bit-Release-Tests\build\layout-test-results\fast/canvas/canvas-pattern-modify-expected.txt
+++ C:\BW\WinCairo-64-bit-Release-Tests\build\layout-test-results\fast/canvas/canvas-pattern-modify-actual.txt
@@ -3,10 +3,10 @@
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
-PASS getPixel(ctx, 1,1) is [0,255,0,255]
-PASS getPixel(ctx, 98,1) is [0,255,0,255]
-PASS getPixel(ctx, 1,48) is [0,255,0,255]
-PASS getPixel(ctx, 98,48) is [0,255,0,255]
+FAIL getPixel(ctx, 1,1) should be 0,255,0,255. Was 255,0,0,255.
+FAIL getPixel(ctx, 98,1) should be 0,255,0,255. Was 255,0,0,255.
+FAIL getPixel(ctx, 1,48) should be 0,255,0,255. Was 255,0,0,255.
+FAIL getPixel(ctx, 98,48) should be 0,255,0,255. Was 255,0,0,255.
 PASS successfullyParsed is true
 
 TEST COMPLETE

Comment 1 Fujii Hironori 2023-10-06 15:48:49 PDT

Here is the results on my PC.

> python.exe ./Tools/Scripts/run-webkit-tests --debug  --no-new-test-results fast/canvas/canvas-pattern-modify.html -v --iterations=10

[1/10] fast/canvas/canvas-pattern-modify.html failed (text diff)
[2/10] fast/canvas/canvas-pattern-modify.html failed (text diff)
[3/10] fast/canvas/canvas-pattern-modify.html failed (text diff)
[4/10] fast/canvas/canvas-pattern-modify.html failed (text diff)
[5/10] fast/canvas/canvas-pattern-modify.html passed unexpectedly
[6/10] fast/canvas/canvas-pattern-modify.html passed unexpectedly
[7/10] fast/canvas/canvas-pattern-modify.html failed (text diff)
[8/10] fast/canvas/canvas-pattern-modify.html failed (text diff)
[9/10] fast/canvas/canvas-pattern-modify.html failed (text diff)
[10/10] fast/canvas/canvas-pattern-modify.html failed (text diff)

Comment 2 Radar WebKit Bug Importer 2023-10-13 15:48:25 PDT

<rdar://problem/116939726>