[Webkit-unassigned] [Bug 186189] New: Crash in WebAnimation::runPendingPlayTask

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=186189

            Bug ID: 186189
           Summary: Crash in WebAnimation::runPendingPlayTask
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Animations
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: cgarcia at igalia.com
                CC: dino at apple.com, graouts at apple.com, jonlee at apple.com

This is another crash due to using a std::optional value while it's nullopt.

Thread 1 "WebKitWebProces" received signal SIGABRT, Aborted.
__GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51      ../sysdeps/unix/sysv/linux/raise.c: No existe el fichero o el directorio.
(gdb) bt
#0  __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007fdeab736231 in __GI_abort () at abort.c:79
#2  0x00007fdeb87e2d8a in WebCore::WebAnimation::runPendingPlayTask() () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#3  0x00007fdeb5cd8665 in WTF::dispatchFunctionsFromMainThread() () from /home/cgarcia/gnome/lib/libjavascriptcoregtk-4.0.so.18
#4  0x00007fdeb5d1c063 in WTF::RunLoop::TimerBase::TimerBase(WTF::RunLoop&)::{lambda(void*)#1}::_FUN(void*) () from /home/cgarcia/gnome/lib/libjavascriptcoregtk-4.0.so.18
#5  0x00007fdeae120495 in g_main_dispatch (context=0x560a765b65c0) at gmain.c:3177
#6  g_main_context_dispatch (context=context at entry=0x560a765b65c0) at gmain.c:3830
#7  0x00007fdeae120838 in g_main_context_iterate (context=0x560a765b65c0, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3903
#8  0x00007fdeae120b42 in g_main_loop_run (loop=0x560a766399e0) at gmain.c:4099
#9  0x00007fdeb5d1c438 in WTF::RunLoop::run() () from /home/cgarcia/gnome/lib/libjavascriptcoregtk-4.0.so.18
#10 0x00007fdeb8207970 in WebProcessMainUnix () from /home/cgarcia/gnome/lib/libwebkit2gtk-4.0.so.37
#11 0x00007fdeab721a87 in __libc_start_main (main=0x560a74c0ac30 <main>, argc=3, argv=0x7ffc918c5a48, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, 
    stack_end=0x7ffc918c5a38) at ../csu/libc-start.c:310
#12 0x0000560a74c0acba in _start ()

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