Comment 58 for bug 1751460

Thread Stacktrace
=================
.
Thread 1 (Thread 0x7fac77b6aac0 (LWP 3178)):
#0 0x00007fac7224d588 in () at /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#1 0x00007fac76c64827 in __pthread_once_slow (once_control=0x7fac724b502c, init_routine=0x7fac69330490 <__once_proxy>) at pthread_once.c:116
        _buffer = {__routine = 0x7fac76c64880 <clear_once_control>, __arg = 0x7fac724b502c, __canceltype = 2008932720, __prev = 0x0}
        val = <optimized out>
        newval = <optimized out>
#2 0x00007fac7224ce0d in Gigacage::ensureGigacage() () at /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#3 0x00007fac7224dd01 in bmalloc::Heap::Heap(bmalloc::HeapKind, std::lock_guard<bmalloc::StaticMutex>&) () at /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#4 0x00007fac7224bb10 in bmalloc::PerProcess<bmalloc::PerHeapKind<bmalloc::Heap> >::getSlowCase() () at /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#5 0x00007fac7224b7d4 in bmalloc::Cache::Cache(bmalloc::HeapKind) () at /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#6 0x00007fac7224bbf6 in bmalloc::PerThread<bmalloc::PerHeapKind<bmalloc::Cache> >::getSlowCase() () at /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#7 0x00007fac7224b87f in bmalloc::Cache::allocateSlowCaseNullCache(bmalloc::HeapKind, unsigned long) () at /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#8 0x00007fac72230f56 in WTF::StringImpl::createFromLiteral(char const*, unsigned int) () at /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#9 0x00007fac72230fe1 in WTF::StringImpl::createFromLiteral(char const*) () at /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#10 0x00007fac7223d3c0 in WTF::String::String(WTF::ASCIILiteral) () at /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-4.0.so.18
#11 0x00007fac729f7557 in () at /usr/lib/x86_64-linux-gnu/libwebkit2gtk-4.0.so.37
#12 0x00007fac779c5733 in call_init (env=0x7ffc3677ae08, argv=0x7ffc3677adf8, argc=1, l=<optimized out>) at dl-init.c:72
        j = <optimized out>
        jm = <optimized out>
        addrs = <optimized out>
        init_array = <optimized out>
        env = 0x7ffc3677ae08
        argv = 0x7ffc3677adf8
        argc = 1
        l = <optimized out>
        preinit_array = <optimized out>
        preinit_array_size = <optimized out>
        i = 6
#13 0x00007fac779c5733 in _dl_init (main_map=0x7fac77bde170, argc=1, argv=0x7ffc3677adf8, env=0x7ffc3677ae08) at dl-init.c:119
        preinit_array = <optimized out>
        preinit_array_size = <optimized out>
        i = 6
#14 0x00007fac779b60ca in _dl_start_user () at /lib64/ld-linux-x86-64.so.2
#15 0x0000000000000001 in ()
#16 0x00007ffc3677b9c3 in ()
#17 0x0000000000000000 in ()