Bug 274959 – [WPE GTK Debug] API test `TestWebCore.MIMETypeRegistry.ExtensionsForMIMEType` is a constant crash

• Component: Tools / Tests
• Status: RESOLVED FIXED

[Vitaly Dyackhov]

```
$ run-wpe-tests --debug TestWebCore -p MIMETypeRegistry.ExtensionsForMIMEType
***
*** Warning: jhbuild environment not present and not running in flatpak.
*** Run update-webkitwpe-libs or update-webkit-flatpak before build-webkit to ensure proper testing..
***
NOT IMPLEMENTED YET
/home/vitaly/WebKit/Source/WebCore/platform/xdg/MIMETypeRegistryXdg.cpp(74) : static WTF::Vector<WTF::String> WebCore::MIMETypeRegistry::extensionsForMIMEType(const WTF::String&)
1   0x558cf23a9b1c WTFCrash
2   0x558cf6fbe979 ???
3   0x558cefe163a3 TestWebKitAPI::MIMETypeRegistry_ExtensionsForMIMEType_Test::TestBody()
4   0x7f44226fe5bb void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*)
5   0x7f44226f4f43 void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*)
6   0x7f44226d9e7c testing::Test::Run()
7   0x7f44226da797 testing::TestInfo::Run()
8   0x7f44226db1db testing::TestSuite::Run()
9   0x7f44226e8b10 testing::internal::UnitTestImpl::RunAllTests()
10  0x7f44226fff94 bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*)
11  0x7f44226f5edd bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*)
12  0x7f44226e713b testing::UnitTest::Run()
13  0x558cefd0b385 RUN_ALL_TESTS()
14  0x558cefd0b937 TestWebKitAPI::TestsController::run(int, char**)
15  0x558cefe89c48 main
16  0x7f441f273a90 __libc_start_call_main
17  0x7f441f273b49 __libc_start_main
18  0x558cefd0ae25 _start
**CRASH** MIMETypeRegistry.ExtensionsForMIMEType

Unexpected crashes (1)
    /TestWebCore
        MIMETypeRegistry.ExtensionsForMIMEType

Ran 1 tests of 1 with 0 successful
```

[Vitaly Dyackhov]

Pull request: https://github.com/WebKit/WebKit/pull/29368

[EWS]

Committed 279575@main (1748da270165): <https://commits.webkit.org/279575@main>

Reviewed commits have been landed. Closing PR #29368 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/129061378>