IronLanguages / IronLanguages/ironpython3

Parser reports multiple syntax errors in test_syntax

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C#
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Description

When trying to parse the following with a custom error sink, invalid syntax is reported three times.

class x(

def x(self):
    pass

See test_parser_recovery in test_syntax for details.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with test_parser_recovery in test_syntax and reproduce the custom error-sink case shown in the issue. Trace the parser's recovery path for the incomplete class definition and update the behavior so the invalid-syntax report is not emitted three times; the test should confirm the corrected report count.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, python
Domain
compilers, testing-qa
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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