Cannot set a breakpoint on some modules
Open
Nobody has claimed this yet.
confirmed-bug
inspector
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- JavaScript
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- 283
Description
Environment
- macOS 10.15.7
- Node.js 15.x.x
Steps to Reproduce
$ node inspect -e "console.log('hello')"
< Debugger listening on ws://127.0.0.1:9229/c66c9b5b-fe08-43df-8494-0cd1609f277d
< For help, see: https://nodejs.org/en/docs/inspector
< Debugger attached.
Break on start in [eval]:1
> 1 console.log('hello')
debug> step
break in internal/console/constructor.js:341
339 const consoleMethods = {
340 log(...args) {
>341 this[kWriteToConsole](kUseStdout, this[kFormatForStdout](args));
342 },
343
debug> step
break in internal/console/constructor.js:305
303 ...consolePropAttributes,
304 value: function(args) {
>305 const opts = this[kGetInspectOptions](this._stdout);
306 return formatWithOptions(opts, ...args);
307 }
debug> out
break in internal/console/constructor.js:341
339 const consoleMethods = {
340 log(...args) {
>341 this[kWriteToConsole](kUseStdout, this[kFormatForStdout](args));
342 },
343
debug> step
break in internal/console/constructor.js:242
240 ...consolePropAttributes,
241 value: function(streamSymbol, string) {
>242 const ignoreErrors = this._ignoreErrors;
243 const groupIndent = this[kGroupIndent];
244
debug> list()
237 }
238 },
239 [kWriteToConsole]: {
240 ...consolePropAttributes,
241 value: function(streamSymbol, string) {
>242 const ignoreErrors = this._ignoreErrors;
243 const groupIndent = this[kGroupIndent];
244
245 const useStdout = streamSymbol === kUseStdout;
246 const stream = useStdout ? this._stdout : this._stderr;
247 const errorHandler = useStdout ?
debug> setBreakpoint(245)
Uncaught Error: Could not resolve breakpoint - undefined
at _pending.<computed> (internal/deps/node-inspect/lib/internal/inspect_client.js:243:27)
at Client._handleChunk (internal/deps/node-inspect/lib/internal/inspect_client.js:213:11)
at Socket.emit (events.js:314:20)
at Socket.EventEmitter.emit (domain.js:486:12)
at addChunk (_stream_readable.js:321:12)
at readableAddChunk (_stream_readable.js:297:9)
at Socket.Readable.push (_stream_readable.js:236:10)
at TCP.onStreamRead (internal/stream_base_commons.js:192:23)
at TCP.callbackTrampoline (internal/async_hooks.js:129:14) {
code: -32000
}
debug> cont
< hello
< Waiting for the debugger to disconnect...
debug>
Expected Behavior
Able to set a breakpoint without any errors.
Actual Behavior
Cannot set a breakpoint. Getting an error and a stack trace shown on Steps to Reproduce section.
Analysis
If this is indeed a bug and not the expected behavior, I understand that 7a447bc is the commit that introduced this. How I reached this opinion is:
- Observed this issue on my local Node.js installation, which is
15.3.0. - Using the n version manager for Node.js, tested it on all Node.js versions from
14.4.0to14.15.1. Observed that the issue does not happen on any of these versions. - Then tested it with
15.0.0and15.0.1. The issue was observed in both versions (as well as my initial Node.js version, which is15.3.0). Deduced that the issue starts with version 15. - Using the n version manager, did a binary search on Node.js nightly binaries from
v14.0.0-nightly20200421c3554307c6(the last version that starts withv14) tov16.0.0-nightly20201021c2ceb15fd5(the first version that starts withv16). That is, I performed a manualgit bisect; first I downloadedv14.0.0-nightly20200421c3554307c6and observed that it works fine. Then I downloadedv16.0.0-nightly20201021c2ceb15fd5and observed that the issue is present. Then downloaded the version that's in the middle of them (which isv15.0.0-nightly2020072341c1e72b76) and observed that the issue is present. - After a couple steps, I have realized that
v15.0.0-nightly20200717bf0d82c102is the last version that issue is not observed andv15.0.0-nightly202007187a447bcd54is the first version that issue is observed. Upon observing this, I ran a comparison on GitHub between the commits of these versions (which are bf0d82c102 for the last working version and 7a447bcd54 for the first broken version). GitHub told me that the following are the commits between those versions:- bf0d82c
- 08e8997
- 5aeaff6
- d10c59f
- d379b00
- 404302f
- ef9964f
- f045387
- 1faf6f4
- 7ecb285
- 0b8ae5f
- c943cb4
- f8bde7c
- b1c3909
- 7a447bc
- Downloaded the Node.js source code, checked out bf0d82c, configured (
./configure) and built it (make -j8) on my machine (which is macOS 10.15.7 with xcode-select version 2373). Observed that it works properly. - Then, consecutively, checked out all commits (starting with 08e8997 and going towards 7a447bc), built them and tested them. Observed that the issue does not happen in any of them except the last commit, which is 7a447bc.
- Hence, if this is indeed a bug, I deduced that 7a447bc is the commit that introduced this bug.
My nightly build test results for reference (click on the arrow to expand)
WORKS - v15.0.0-nightly20200422d08bd41248/ 22-Apr-2020 07:30 -
v15.0.0-nightly202004236a07eca49c/ 23-Apr-2020 07:30 -
v15.0.0-nightly202004240619b600b2/ 24-Apr-2020 07:00 -
v15.0.0-nightly2020042524a4e6153d/ 25-Apr-2020 07:30 -
v15.0.0-nightly20200426f8d5474839/ 26-Apr-2020 07:00 -
v15.0.0-nightly202004275ee1e31e38/ 27-Apr-2020 07:30 -
v15.0.0-nightly20200428307c67be17/ 28-Apr-2020 08:30 -
v15.0.0-nightly20200429e7b99e027b/ 29-Apr-2020 07:30 -
v15.0.0-nightly202004302496db8e09/ 30-Apr-2020 07:30 -
v15.0.0-nightly20200501e9518254d7/ 01-May-2020 08:30 -
v15.0.0-nightly202005027c36ec38f1/ 02-May-2020 07:00 -
v15.0.0-nightly20200503b0aba53195/ 03-May-2020 07:00 -
v15.0.0-nightly20200504bde5f9baf7/ 04-May-2020 08:30 -
v15.0.0-nightly20200505c17dcb3253/ 05-May-2020 08:30 -
v15.0.0-nightly2020050686fdaa7455/ 06-May-2020 07:30 -
v15.0.0-nightly202005078607f9ec5c/ 07-May-2020 07:00 -
v15.0.0-nightly20200508bcdbd57134/ 08-May-2020 07:30 -
v15.0.0-nightly20200509be7fd2d517/ 09-May-2020 07:00 -
v15.0.0-nightly2020051094e5b5c77d/ 10-May-2020 07:00 -
v15.0.0-nightly202005118a6fab02ad/ 11-May-2020 07:00 -
v15.0.0-nightly202005128c5d58b5a7/ 12-May-2020 07:00 -
v15.0.0-nightly202005135bb4d01fbe/ 13-May-2020 07:30 -
v15.0.0-nightly20200514eaa16cd477/ 14-May-2020 07:30 -
v15.0.0-nightly2020051524bf1adacc/ 15-May-2020 07:30 -
v15.0.0-nightly20200516b533fb3508/ 16-May-2020 07:00 -
v15.0.0-nightly20200517b3ca8869a6/ 17-May-2020 07:30 -
v15.0.0-nightly20200518ef1eb8d439/ 18-May-2020 08:30 -
v15.0.0-nightly20200519fe1b9e09a8/ 19-May-2020 07:30 -
v15.0.0-nightly20200520a82001a387/ 20-May-2020 07:30 -
v15.0.0-nightly20200521cd4985c488/ 21-May-2020 07:00 -
v15.0.0-nightly2020052251af89fe45/ 22-May-2020 07:00 -
v15.0.0-nightly20200523a416692e93/ 23-May-2020 07:00 -
v15.0.0-nightly20200524dd5f209213/ 24-May-2020 08:30 -
v15.0.0-nightly20200525458677f5ef/ 25-May-2020 07:00 -
v15.0.0-nightly202005265007611294/ 26-May-2020 08:30 -
v15.0.0-nightly202005279949a2e1e3/ 27-May-2020 08:30 -
v15.0.0-nightly2020052847044a91c6/ 28-May-2020 08:30 -
v15.0.0-nightly202005296a1df3b5af/ 29-May-2020 07:30 -
v15.0.0-nightly20200530d79c330186/ 30-May-2020 07:00 -
v15.0.0-nightly202005312935f72ae1/ 31-May-2020 08:30 -
v15.0.0-nightly20200602b1704e4347/ 02-Jun-2020 07:30 -
v15.0.0-nightly20200603680fb8fc62/ 03-Jun-2020 07:30 -
v15.0.0-nightly202006043a7a5d7e62/ 04-Jun-2020 07:30 -
v15.0.0-nightly202006053e2a300710/ 05-Jun-2020 07:30 -
WORKS - v15.0.0-nightly202006063ac50e1209/ 06-Jun-2020 07:30 -
v15.0.0-nightly20200607d8eef83757/ 07-Jun-2020 08:30 -
v15.0.0-nightly202006088a4b5c63e0/ 08-Jun-2020 07:30 -
v15.0.0-nightly20200609921f75534c/ 09-Jun-2020 08:30 -
v15.0.0-nightly20200610362e4a1aec/ 10-Jun-2020 14:30 -
v15.0.0-nightly20200611f4e805c860/ 11-Jun-2020 08:30 -
v15.0.0-nightly20200612bba9b008ef/ 12-Jun-2020 07:30 -
v15.0.0-nightly202006137b46793eee/ 13-Jun-2020 08:30 -
v15.0.0-nightly20200614c17d2f9901/ 14-Jun-2020 07:30 -
v15.0.0-nightly20200615f645cc7318/ 15-Jun-2020 08:30 -
v15.0.0-nightly20200616b371213d3d/ 16-Jun-2020 09:00 -
v15.0.0-nightly20200617ee7f0e3f75/ 17-Jun-2020 07:30 -
v15.0.0-nightly20200618a4f3206b76/ 18-Jun-2020 07:30 -
v15.0.0-nightly2020061956967afdca/ 19-Jun-2020 08:30 -
v15.0.0-nightly20200620fdf10adef8/ 20-Jun-2020 07:30 -
v15.0.0-nightly20200622122038c6a2/ 22-Jun-2020 07:00 -
v15.0.0-nightly2020062386cbad837b/ 23-Jun-2020 06:30 -
v15.0.0-nightly20200624d8f8723577/ 24-Jun-2020 07:00 -
v15.0.0-nightly20200625e405e82f74/ 25-Jun-2020 07:00 -
v15.0.0-nightly20200626e18afe45d2/ 26-Jun-2020 07:00 -
v15.0.0-nightly20200627f63436d190/ 27-Jun-2020 07:00 -
v15.0.0-nightly20200628f89530fccc/ 28-Jun-2020 09:00 -
WORKS - v15.0.0-nightly2020062990d5f35f7a/ 29-Jun-2020 07:30 -
v15.0.0-nightly20200630c23d2fd3f8/ 30-Jun-2020 07:30 -
v15.0.0-nightly20200701e2b468eb5c/ 01-Jul-2020 07:30 -
v15.0.0-nightly20200702c118304ad0/ 02-Jul-2020 08:30 -
v15.0.0-nightly202007031dc837ed9a/ 03-Jul-2020 07:30 -
v15.0.0-nightly20200704bff7de3b43/ 04-Jul-2020 08:00 -
v15.0.0-nightly2020070556dbe466fd/ 05-Jul-2020 07:00 -
v15.0.0-nightly2020070667ba825037/ 06-Jul-2020 08:30 -
v15.0.0-nightly2020070730612316e4/ 07-Jul-2020 07:30 -
v15.0.0-nightly20200708e0ecde9737/ 08-Jul-2020 07:30 -
v15.0.0-nightly202007096ae1b9c457/ 09-Jul-2020 07:00 -
WORKS - v15.0.0-nightly202007101237955d41/ 10-Jul-2020 07:00 -
v15.0.0-nightly20200711c176d5fac2/ 11-Jul-2020 07:00 -
v15.0.0-nightly20200712ac6ecd6b7f/ 12-Jul-2020 07:00 -
v15.0.0-nightly20200714c7627da837/ 14-Jul-2020 08:00 -
v15.0.0-nightly202007153b130327fa/ 15-Jul-2020 08:00 -
v15.0.0-nightly20200716d46fc91be4/ 16-Jul-2020 08:00 -
WORKS - v15.0.0-nightly20200717bf0d82c102/ 17-Jul-2020 08:00 -
DOES NOT WORK - v15.0.0-nightly202007187a447bcd54/ 18-Jul-2020 07:30 -
DOES NOT WORK - v15.0.0-nightly202007190c81cadec6/ 19-Jul-2020 08:30 -
NO BINARY FOR MACOS - v15.0.0-nightly20200720a51436cbea/ 20-Jul-2020 06:30 -
v15.0.0-nightly202007212c05beeb54/ 21-Jul-2020 08:00 -
v15.0.0-nightly20200722b0b52b2023/ 22-Jul-2020 09:00 -
DOES NOT WORK - v15.0.0-nightly2020072341c1e72b76/ 23-Jul-2020 09:00 -
v15.0.0-nightly20200724d1e4e8eaba/ 24-Jul-2020 07:30 -
v15.0.0-nightly20200725de192246bc/ 25-Jul-2020 07:00 -
v15.0.0-nightly2020072631ba9a20bd/ 26-Jul-2020 07:00 -
v15.0.0-nightly20200727db54b57042/ 27-Jul-2020 07:00 -
v15.0.0-nightly202007286fd09e4f36/ 28-Jul-2020 07:00 -
v15.0.0-nightly20200729360bf9b289/ 29-Jul-2020 08:30 -
v15.0.0-nightly202007301fe39f0b4b/ 30-Jul-2020 08:30 -
v15.0.0-nightly20200731dc00a07426/ 31-Jul-2020 07:00 -
v15.0.0-nightly20200801cc7ec889e8/ 01-Aug-2020 07:00 -
v15.0.0-nightly2020080273d713b16e/ 02-Aug-2020 07:00 -
v15.0.0-nightly20200803a9c5b873ca/ 03-Aug-2020 07:00 -
v15.0.0-nightly2020080474df7496ff/ 04-Aug-2020 07:00 -
v15.0.0-nightly2020080584b35b2867/ 05-Aug-2020 07:00 -
v15.0.0-nightly20200806df17fcdc71/ 06-Aug-2020 07:00 -
v15.0.0-nightly2020080746bef7b771/ 07-Aug-2020 07:00 -
v15.0.0-nightly20200808ac5773b1c3/ 08-Aug-2020 08:30 -
v15.0.0-nightly202008098825eb4d73/ 09-Aug-2020 07:00 -
v15.0.0-nightly20200810dd0c5228ac/ 10-Aug-2020 08:00 -
v15.0.0-nightly20200811f8a0e62bbf/ 11-Aug-2020 07:00 -
v15.0.0-nightly202008122f27f1144e/ 12-Aug-2020 08:30 -
v15.0.0-nightly202008137a1220a1d7/ 17-Aug-2020 22:30 -
v15.0.0-nightly202008145864fca7bc/ 17-Aug-2020 22:30 -
v15.0.0-nightly202008158da8ec9c7e/ 17-Aug-2020 22:30 -
v15.0.0-nightly20200816375b859428/ 17-Aug-2020 22:30 -
v15.0.0-nightly2020081742a3a7f97d/ 17-Aug-2020 23:00 -
v15.0.0-nightly20200818ca5ff723d1/ 21-Aug-2020 22:30 -
v15.0.0-nightly202008196e97a735c8/ 21-Aug-2020 23:00 -
v15.0.0-nightly2020082003293aa3a1/ 21-Aug-2020 23:00 -
v15.0.0-nightly202008217aeff6b8c8/ 21-Aug-2020 23:00 -
v15.0.0-nightly2020082244e6a6af67/ 22-Aug-2020 08:30 -
v15.0.0-nightly202008238e8d429277/ 23-Aug-2020 08:30 -
v15.0.0-nightly20200824c3d337db5d/ 24-Aug-2020 09:00 -
v15.0.0-nightly20200825010383a174/ 25-Aug-2020 08:30 -
v15.0.0-nightly20200826c6b96895cc/ 26-Aug-2020 09:00 -
v15.0.0-nightly202008278ec3b55e5b/ 27-Aug-2020 08:30 -
v15.0.0-nightly202008280848f56cb3/ 28-Aug-2020 08:30 -
v15.0.0-nightly2020082994fcac7876/ 29-Aug-2020 08:30 -
v15.0.0-nightly202008305c020762bb/ 30-Aug-2020 07:30 -
v15.0.0-nightly20200831e1edd6bbfa/ 31-Aug-2020 07:30 -
v15.0.0-nightly2020090159cad32b51/ 01-Sep-2020 07:30 -
v15.0.0-nightly20200902e2ffa454d3/ 02-Sep-2020 07:00 -
v15.0.0-nightly20200903b23a932bfd/ 03-Sep-2020 08:30 -
v15.0.0-nightly202009043b925219c3/ 04-Sep-2020 08:30 -
v15.0.0-nightly20200905186230527b/ 05-Sep-2020 08:30 -
v15.0.0-nightly20200906e326c41fbc/ 08-Sep-2020 12:00 -
v15.0.0-nightly20200907bb9117ee9f/ 08-Sep-2020 12:30 -
v15.0.0-nightly202009086f2af08245/ 08-Sep-2020 12:30 -
v15.0.0-nightly202009091204400d64/ 09-Sep-2020 08:30 -
v15.0.0-nightly202009104c9b79ed5a/ 10-Sep-2020 07:00 -
v15.0.0-nightly202009114f176c9110/ 11-Sep-2020 07:30 -
v15.0.0-nightly20200912541d296d56/ 12-Sep-2020 08:30 -
v15.0.0-nightly20200913b123e0806f/ 13-Sep-2020 07:00 -
v15.0.0-nightly202009149d12c14b19/ 14-Sep-2020 07:00 -
v15.0.0-nightly202009152b3eb101b5/ 15-Sep-2020 07:30 -
v15.0.0-nightly202009169cf9e4aebc/ 16-Sep-2020 08:30 -
v15.0.0-nightly2020091718462e0c1d/ 17-Sep-2020 08:30 -
v15.0.0-nightly202009182d868fe822/ 18-Sep-2020 07:30 -
v15.0.0-nightly2020091931b3202d59/ 19-Sep-2020 08:00 -
v15.0.0-nightly20200920770ad3a52d/ 20-Sep-2020 08:30 -
v15.0.0-nightly20200921039c274dde/ 21-Sep-2020 09:00 -
v15.0.0-nightly20200922d71b467bbe/ 22-Sep-2020 08:30 -
v15.0.0-nightly202009233b10f7f933/ 23-Sep-2020 07:00 -
v15.0.0-nightly20200924d6fe46f749/ 25-Sep-2020 11:30 -
v15.0.0-nightly20200925785a5f9ae1/ 25-Sep-2020 11:30 -
v15.0.0-nightly20200926aa99bb47bf/ 26-Sep-2020 08:00 -
v15.0.0-nightly20200927af92317909/ 27-Sep-2020 09:00 -
v15.0.0-nightly202009286fc3b0ddb9/ 28-Sep-2020 08:00 -
v15.0.0-nightly202009291e8cb08edc/ 29-Sep-2020 07:30 -
v15.0.0-nightly20200930ee9e3e75aa/ 30-Sep-2020 08:30 -
v15.0.0-nightly20201001726143e683/ 01-Oct-2020 07:00 -
v15.0.0-nightly202010024a6005c56a/ 02-Oct-2020 07:00 -
v15.0.0-nightly20201003e7bb8b6dc0/ 03-Oct-2020 08:00 -
v15.0.0-nightly20201004e6d5af3c95/ 04-Oct-2020 08:30 -
v15.0.0-nightly202010055e605c0dd9/ 05-Oct-2020 09:00 -
v15.0.0-nightly20201006642f2064c0/ 06-Oct-2020 08:00 -
v15.0.0-nightly20201007bc0c094b74/ 07-Oct-2020 07:00 -
v15.0.0-nightly20201008ccc822c7c8/ 08-Oct-2020 07:00 -
v15.0.0-nightly20201009c8b950a7af/ 09-Oct-2020 07:00 -
v15.0.0-nightly202010108d8e06a345/ 10-Oct-2020 07:00 -
v15.0.0-nightly2020101191e0d9bc30/ 11-Oct-2020 07:00 -
v15.0.0-nightly202010122d83e743d9/ 12-Oct-2020 07:00 -
v15.0.0-nightly2020101344a66adbaa/ 13-Oct-2020 07:00 -
v15.0.0-nightly20201014d5e64952fe/ 14-Oct-2020 08:30 -
v15.0.0-nightly202010154079bfd462/ 15-Oct-2020 21:00 -
v15.0.0-nightly20201016c143266b55/ 16-Oct-2020 07:00 -
v15.0.0-nightly20201017a3731309cc/ 17-Oct-2020 11:00 -
v15.0.0-nightly20201018ee85eb9f8a/ 18-Oct-2020 07:30 -
v15.0.0-nightly20201019c55f661551/ 19-Oct-2020 07:00 -
v15.0.0-nightly2020102011f1ad939f/ 20-Oct-2020 07:00 -
DOES NOT WORK - v16.0.0-nightly20201021c2ceb15fd5/ 21-Oct-2020 07:00 -
Please view Other Places This Issue is Mentioned for more information on this issue and a GIF demonstration of the issue.
@joyeecheung
@addaleax
Other Places This Issue is Mentioned
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the failure with the node inspect -e "console.log('hello')" session, then inspect internal/deps/node-inspect/lib/internal/inspect_client.js around the breakpoint handling at line 243 and compare commit 7a447bc with the preceding working version. Done means setting the breakpoint no longer raises the unresolved-breakpoint error or stack trace.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, node.js
- Domain
- cli, devtools
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100