1452196 - Debugger broken with wasm, lots of errors in browser console

Status: NEW

(DevTools :: Debugger, defect, P5)

Description

[Nick Fitzgerald [:fitzgen] [⏰PST; UTC-8]]

```
Handler function threw an exception: TypeError: this.transport is null
Stack: send@resource://devtools/shared/base-loader.js -> resource://devtools/server/main.js:1487:5
addSecurityInfo@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/webconsole.js:2332:5
NetworkResponseListener.prototype._getSecurityInfo<@resource://devtools/shared/base-loader.js -> resource://devtools/shared/webconsole/network-monitor.js:519:5
exports.makeInfallible/<@resource://devtools/shared/base-loader.js -> resource://devtools/shared/ThreadSafeDevToolsUtils.js:109:14
onStartRequest@resource://devtools/shared/base-loader.js -> resource://devtools/shared/webconsole/network-monitor.js:439:5
Line: 1487, column: 5
ThreadSafeDevToolsUtils.js:88:5
TypeError: this.transport is null[Learn More]
main.js:1487:5
Please file an issue: reasonType= interrupted
debugger.js:34948:5
DebuggeeWouldRun: debuggee `http://localhost:8080/bootstrap.js line 345 > eval:2969' would run event-loop.js:118:5
TypeError: source is undefined[Learn More] debugger.js:9232:11
TypeError: this._tabPool is null
tab.js:1406:5
```

and


```
Handler function threw an exception: TypeError: this.transport is null
Stack: send@resource://devtools/shared/base-loader.js -> resource://devtools/server/main.js:1487:5
addSecurityInfo@resource://devtools/shared/base-loader.js -> resource://devtools/server/actors/webconsole.js:2332:5
NetworkResponseListener.prototype._getSecurityInfo<@resource://devtools/shared/base-loader.js -> resource://devtools/shared/webconsole/network-monitor.js:519:5
exports.makeInfallible/<@resource://devtools/shared/base-loader.js -> resource://devtools/shared/ThreadSafeDevToolsUtils.js:109:14
onStartRequest@resource://devtools/shared/base-loader.js -> resource://devtools/shared/webconsole/network-monitor.js:439:5
Line: 1487, column: 5
```

and

```
onPacket threw an exception: Error: Server did not specify an actor, dropping packet: {"error":"wrongOrder","message":"trying to resume in the wrong order.","lastPausedUrl":"http://localhost:8080/"}
Stack: onPacket@resource://devtools/shared/base-loader.js -> resource://devtools/shared/client/debugger-client.js:856:9
send/<@resource://devtools/shared/base-loader.js -> resource://devtools/shared/transport/transport.js:569:13
exports.makeInfallible/<@resource://devtools/shared/base-loader.js -> resource://devtools/shared/ThreadSafeDevToolsUtils.js:109:14
exports.makeInfallible/<@resource://devtools/shared/base-loader.js -> resource://devtools/shared/ThreadSafeDevToolsUtils.js:109:14
Line: 856, column: 9
```

packaging up test case, one second...

Comment 1

[Nick Fitzgerald [:fitzgen] [⏰PST; UTC-8]]

STR:

* extract zip to ./wasm_game_of_life
* cd ./wasm_game_of_life
* npm install
* npm run serve
* navigate to localhost:8080 with devtools open

ER:

Debugger pauses at `debugger` statement in index.js's renderLoop function

AR:

page appears paused, but debugger UI does not reflect that, errors in browser console (see above)

Comment 2

[Nick Fitzgerald [:fitzgen] [⏰PST; UTC-8]]

Attachment: wasm_game_of_life.zip

Comment 3

[Nick Fitzgerald [:fitzgen] [⏰PST; UTC-8]]

This started working after I restarted the browser, but not consistently.