[Webkit-unassigned] [Bug 69942] New: When an API test fails, TestWebKitAPI crashes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=69942

           Summary: When an API test fails, TestWebKitAPI crashes
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: simon.fraser at apple.com
                CC: fpizlo at apple.com


If I introduce a deliberate failure in an API test, like:

 TEST_F(MetaAllocatorTest, SimpleFullCoalesce32PlusPageLess32ThenPage)
 {
+    EXPECT_TRUE(false);
     testSimpleFullCoalesce(32, pageSize() - 32, pageSize());
 }

then TestWebKitAPI crashes, rather than just reporting the failure. The crash is:

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000000000020d8

VM Regions Near 0x20d8:
--> 
    __TEXT                 00000001042de000-0000000104359000 [  492K] r-x/rwx SM=COW  /Volumes/VOLUME/*

Application Specific Information:
objc[91719]: garbage collection is OFF

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.JavaScriptCore          0x0000000104bc3a49 WTF::fastFree(void*) + 137 (TCPageMap.h:234)
1   TestWebKitAPI                     0x0000000104320038 testing::Test::Run() + 92
2   TestWebKitAPI                     0x00000001043206be testing::internal::TestInfoImpl::Run() + 158
3   TestWebKitAPI                     0x0000000104320ae5 testing::TestCase::Run() + 161
4   TestWebKitAPI                     0x0000000104323e7a testing::internal::UnitTestImpl::RunAllTests() + 594
5   TestWebKitAPI                     0x00000001042dfdde TestWebKitAPI::TestsController::run(int, char**) + 36 (TestsController.cpp:51)
6   TestWebKitAPI                     0x00000001042dfcf1 main + 96 (main.mm:35)
7   TestWebKitAPI                     0x00000001042df934 start + 52

This looks like malloc/FastMalloc mixing.

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