eventTargetHasListener crashes when fetching https://duckduckgo.com/?t=ffab

[krichprollsch]

The browser crashes fetching this url:

$ zig build run -- fetch --dump --with_base --noscript https://duckduckgo.com/?t=ffab

Segmentation fault at address 0x200000000
/usr/local/zig-0.15.1/lib/compiler_rt/memcpy.zig:170:17: 0x76da60a in memcpyFast (compiler_rt)
        d[i] = s[i];
                ^
/home/pierre/wrk/browser/src/browser/netsurf.zig:602:5: 0x317f2bb in eventTargetVtable (lightpanda)
    return @as([*c]const c.dom_event_target_vtable, @ptrCast(vtable_aligned)).*;
    ^
/home/pierre/wrk/browser/src/browser/netsurf.zig:681:38: 0x381fe85 in eventTargetHasListener (lightpanda)
        const err = eventTargetVtable(et).iter_event_listener.?(
                                     ^
/home/pierre/wrk/browser/src/browser/events/event.zig:293:46: 0x382045f in register (lightpanda)
        if (try parser.eventTargetHasListener(target, typ, capture, callback.id) != null) {
                                             ^
/home/pierre/wrk/browser/src/browser/dom/event_target.zig:88:38: 0x344a36b in _addEventListener (lightpanda)
        _ = try EventHandler.register(page.arena, self, typ, listener, opts);
                                     ^
/home/pierre/wrk/browser/src/runtime/js.zig:3039:13: 0x344a1e7 in method__anon_286751 (lightpanda)
            const res = @call(.auto, func, args);
            ^
/home/pierre/wrk/browser/src/runtime/js.zig:2474:34: 0x32d14b2 in callback (lightpanda)
                    caller.method(Struct, named_function, info) catch |err| {
                                 ^
???:?:?: 0x3bd88c6 in ??? (???)
Unwind error at address `:0x3bd88c6` (error.MissingFDE), trace may be incomplete

???:?:?: 0x3bd4df8 in ??? (???)
???:?:?: 0x640a18c6 in ??? (???)
???:?:?: 0x63d0a8a2 in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0a537 in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0a537 in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0a537 in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0a537 in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0a537 in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0a537 in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0a537 in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0a537 in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0a537 in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0ac3b in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0a537 in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0a537 in ??? (???)
???:?:?: 0x63cba425 in ??? (???)
???:?:?: 0x63d0afd4 in ??? (???)
???:?:?: 0x3bd4df8 in ??? (???)
???:?:?: 0x63d3f33b in ??? (???)
???:?:?: 0x63d60355 in ??? (???)
???:?:?: 0x3bd4df8 in ??? (???)
???:?:?: 0x3bd4df8 in ??? (???)
???:?:?: 0x3bd4df8 in ??? (???)
???:?:?: 0x3bd4df8 in ??? (???)
???:?:?: 0x63d64b94 in ??? (???)
???:?:?: 0x3bd4df8 in ??? (???)
???:?:?: 0x3bd4df8 in ??? (???)
???:?:?: 0x3bcba9b in ??? (???)
???:?:?: 0x3bcb7ea in ??? (???)
../../../src/src/execution/simulator.h:212:12: 0x510fe7e in Invoke (../../../src/src/execution/execution.cc)
../../../src/src/execution/execution.cc:530:10: 0x510e35c in Call (../../../src/src/execution/execution.cc)
../../../src/src/api/api.cc:5445:7: 0x3ad644f in Call (../../../src/src/api/api.cc)
../../../src/binding.cpp:1424:30: 0x398a2b4 in ??? (../../../src/binding.cpp)
/home/pierre/.cache/zig/p/v8-0.0.0-xddH6w_EAwA8vK0NAxfxfI7IcbnpkUAcXKNujn7qwnmY/src/v8.zig:856:33: 0x337db37 in call__anon_274277 (lightpanda)
        if (c.v8__Function__Call(self.handle, ctx.handle, getValueHandle(receiver_val), @as(c_int, @intCast(args.len)), c_args)) |ret| {
                                ^
/home/pierre/wrk/browser/src/runtime/js.zig:1852:63: 0x38ca687 in callWithThis__anon_355244 (lightpanda)
                const result = self.func.castToFunction().call(js_context.v8_context, js_this, js_args);
                                                              ^
/home/pierre/wrk/browser/src/runtime/js.zig:1812:41: 0x38cabc4 in tryCallWithThis__anon_355240 (lightpanda)
                return self.callWithThis(T, this, args) catch |err| {
                                        ^
/home/pierre/wrk/browser/src/runtime/js.zig:1804:44: 0x387b466 in tryCall__anon_348355 (lightpanda)
                return self.tryCallWithThis(T, self.getThis(), args, result);
                                           ^
/home/pierre/wrk/browser/src/browser/html/window.zig:433:36: 0x37c184c in run (lightpanda)
            call = self.cbk.tryCall(void, self.args, &result);
                                   ^
/home/pierre/wrk/browser/src/browser/Scheduler.zig:90:22: 0x326b224 in runQueue (lightpanda)
        if (task.func(task.ctx)) |repeat_delay| {
                     ^
/home/pierre/wrk/browser/src/browser/Scheduler.zig:66:25: 0x326b5f9 in runHighPriority (lightpanda)
    return self.runQueue(&self.primary);
                        ^
/home/pierre/wrk/browser/src/browser/page.zig:328:74: 0x326ba89 in _wait (lightpanda)
                    const ms_to_next_task = try scheduler.runHighPriority();
                                                                         ^
/home/pierre/wrk/browser/src/browser/page.zig:261:26: 0x31884cf in wait (lightpanda)
        return self._wait(wait_ms) catch |err| {
                         ^
/home/pierre/wrk/browser/src/browser/session.zig:173:29: 0x311e8a3 in wait (lightpanda)
            return page.wait(wait_ms);
                            ^
/home/pierre/wrk/browser/src/main.zig:171:29: 0x311cf86 in run (lightpanda)
            _ = session.wait(5000); // 5 seconds
                            ^
/home/pierre/wrk/browser/src/main.zig:46:8: 0x311e9c3 in main (lightpanda)
    run(alloc) catch |err| {
       ^
/usr/local/zig-0.15.1/lib/std/start.zig:627:37: 0x311f19d in main (lightpanda)
            const result = root.main() catch |err| {
                                    ^
../sysdeps/nptl/libc_start_call_main.h:58:16: 0x7ca50cc2a1c9 in __libc_start_call_main (../sysdeps/x86/libc-start.c)
../csu/libc-start.c:360:3: 0x7ca50cc2a28a in __libc_start_main_impl (../sysdeps/x86/libc-start.c)
???:?:?: 0x28ab024 in ??? (???)
run
+- run exe lightpanda failure
error: the following command terminated unexpectedly:
./.zig-cache/o/af9cecdc1ad11116d447697f4a9bef27/lightpanda fetch --dump --with_base --noscript "https://duckduckgo.com/?t=ffab"

Build Summary: 3/5 steps succeeded; 1 failed
run transitive failure
+- run exe lightpanda failure

error: the following build command failed with exit code 1:
.zig-cache/o/6132766e5bbbf67cf721c87238716a4b/build /usr/local/zig-0.15.1/zig /usr/local/zig-0.15.1/lib /home/pierre/wrk/browser .zig-cache /home/pierre/.cache/zig --seed 0x168208af -Z9c17a8a286bc9774 run -- fetch --dump --with_base --noscript https://duckduckgo.com/?t=ffab

[krichprollsch]

same crash w/

zig build run -- fetch --log_level debug --dump --with_base --noscript 'https://www.mercadolibre.com.mx'