1373789 - Handle some types of malformed lines better

Status: RESOLVED FIXED

(Testing :: Code Coverage, defect)

Description

[Marco Castelluccio [:marco]]

A line such as "FN:95,cubic-bezier(0.0, 0.0, 1.0, 1.0)" throws an error like this:

>    Traceback (most recent call last):
>      File "python/mozbuild/mozbuild/codecoverage/lcov_rewriter.py", line 687, in <module>
>        main()
>      File "python/mozbuild/mozbuild/codecoverage/lcov_rewriter.py", line 684, in main
>        rewriter.rewrite_file(f, args.output_suffix)\n  File "python/mozbuild/mozbuild/codecoverage/lcov_rewriter.py", line 609, in rewrite_file
>        lcov_file = LcovFile(fh)
>      File "python/mozbuild/mozbuild/codecoverage/lcov_rewriter.py", line 238, in __init__
>        self.parse_file(lcov_fh)
>      File "python/mozbuild/mozbuild/codecoverage/lcov_rewriter.py", line 287, in parse_file
>        LcovFile.__dict__[\'parse_\' + prefix](self, *args)
>    TypeError: parse_FN() takes exactly 3 arguments (6 given) 

with no information about the line itself nor the file that contained it.

Comment 1

[Marco Castelluccio [:marco]]

Attachment: Patch

With this patch applied, the error message is:
> Invalid lcov line start at /home/marco/Documenti/FD/mozilla-unified/prova/1497630523-2591-0.info:563042:
> FN:95,cubic-bezier(0.0, 0.0, 1.0, 1.0)
> Traceback (most recent call last):
>   File "python/mozbuild/mozbuild/codecoverage/lcov_rewriter.py", line 691, in <module>
>     main()
>   File "python/mozbuild/mozbuild/codecoverage/lcov_rewriter.py", line 688, in main
>     rewriter.rewrite_file(f, args.output_suffix)
>   File "python/mozbuild/mozbuild/codecoverage/lcov_rewriter.py", line 613, in rewrite_file
>     lcov_file = LcovFile(fh)
>   File "python/mozbuild/mozbuild/codecoverage/lcov_rewriter.py", line 238, in __init__
>     self.parse_file(lcov_fh)
>   File "python/mozbuild/mozbuild/codecoverage/lcov_rewriter.py", line 287, in parse_file
>     LcovFile.__dict__['parse_' + prefix](self, *args)
> TypeError: parse_FN() takes exactly 3 arguments (6 given)

Comment 2

[Chris Manchester (limited bugmail, email directly)]

Comment on attachment 8878642 [details] [diff] [review]
Patch

Review of attachment 8878642 [details] [diff] [review]:
-----------------------------------------------------------------

Thank you for the patch

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/aa6b6b627a54
Handle some kinds of malformed lcov lines better. r=chmanchester

Comment 4

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

https://hg.mozilla.org/mozilla-central/rev/aa6b6b627a54