Bug 180437

Summary:	REGRESSION: API Test WTF.StringOperators is failing on release testers
Product:	WebKit	Reporter:	Matt Lewis <jlewis3>
Component:	New Bugs	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	ryanhaddad, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Matt Lewis 2017-12-05 12:28:31 PST

The API test WTF.StringOperators is failing on release testers on all platforms currently. I have been unable to reproduce the failure locally. I have managed to narrow the failure down to between the revisions r225430 - r225435. I was able to reproduce the failure on one of the testers, but was unable to fully narrow down the regression point.

Comment 1 Matt Lewis 2017-12-05 12:29:08 PST

sample logs:
https://build.webkit.org/builders/Apple%20Sierra%20Release%20WK2%20%28Tests%29/builds/6103
https://build.webkit.org/builders/Apple%20Sierra%20Release%20WK2%20%28Tests%29/builds/6103/steps/run-api-tests/logs/stdio

Comment 2 Matt Lewis 2017-12-05 12:29:30 PST

Failure:

FAIL WTF.StringOperators

/Volumes/Data/slave/sierra-release/build/Tools/TestWebKitAPI/Tests/WTF/StringOperators.cpp:52
Value of: wtfStringCopyCount
  Actual: 0
Expected: 2
string + string


/Volumes/Data/slave/sierra-release/build/Tools/TestWebKitAPI/Tests/WTF/StringOperators.cpp:54
Value of: wtfStringCopyCount
  Actual: 0
Expected: 2
atomicString + string

Comment 3 Ryan Haddad 2017-12-05 15:54:16 PST

I could not reproduce the failure with a build of r225429, but I can reproduce after doing a clean build of r225430.

Comment 4 Matt Lewis 2017-12-05 15:56:33 PST

I was also able to reproduce the failure on one of the testers consistently.

Comment 5 Matt Lewis 2017-12-05 16:01:33 PST

The revision was rolled out in https://trac.webkit.org/changeset/225555

Closing bug

Comment 6 Radar WebKit Bug Importer 2017-12-06 16:47:22 PST

<rdar://problem/35896595>