[Webkit-unassigned] [Bug 174323] New: Accessing localDescription, remoteDescription, etc. after setTimeout raises EXC_BAD_ACCESS
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon Jul 10 15:16:04 PDT 2017
https://bugs.webkit.org/show_bug.cgi?id=174323
Bug ID: 174323
Summary: Accessing localDescription, remoteDescription, etc.
after setTimeout raises EXC_BAD_ACCESS
Product: WebKit
Version: Safari Technology Preview
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: WebCore JavaScript
Assignee: webkit-unassigned at lists.webkit.org
Reporter: mroberts at twilio.com
The following code raises an EXC_BAD_ACCESS error and crashes the tab in Safari 11 Tech Preview.
(async () => {
const pc = new RTCPeerConnection()
pc.close()
await new Promise(resolve => setTimeout(resolve))
console.log(pc.localDescription)
})()
Even simpler:
const pc = new RTCPeerConnection()
pc.close()
setTimeout(() => {
console.log(pc.localDescription)
})
You can replace the access to `localDescription` with any of
* localDescription
* currentLocalDescription
* pendingLocalDescription
* remoteDescription
* currentRemoteDescription
* pendingRemoteDescription
Expected output:
null
Actual output:
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.WebCore 0x000000010b59e8dd WebCore::LibWebRTCMediaEndpoint::pendingRemoteDescription() const + 13
1 com.apple.WebCore 0x000000010b5aa872 WebCore::LibWebRTCPeerConnectionBackend::pendingRemoteDescription() const + 18
2 com.apple.WebCore 0x000000010b89a1a6 WebCore::RTCPeerConnection::pendingRemoteDescription() const + 22
3 com.apple.WebCore 0x000000010b3d4b77 WebCore::jsRTCPeerConnectionPendingRemoteDescription(JSC::ExecState*, long long, JSC::PropertyName) + 231
...
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