C-analyzer tool cannot parse #line directives

[AlexWaygood]

Bug report

#line directives were added to generated_cases.c.h in 70185de, but the C-analyzer tool cannot handle these directives. This caused the CI check to start failing on all PRs, e.g.:

• gh-94440: Fix issue of ProcessPoolExecutor shutdown hanging #94468
• Simplify and speed-up math.hypot() and math.dist() #102734

The short term fix is to exclude ceval.c from the C-analyzer tool:

• Exclude ceval.c from the C-analyzer tool #102735

But ideally we'd remove ceval.c from the excluded files and teach the C-analyzer tool to handle #line directives.

Linked PRs

• gh-102737: Un-ignore ceval.c in the CI globals check #102745

[rhettinger]

Ideally, this tool should have an overall try/except so that if a failure is caused by the tool being broken then it won't block all the pending PRs. The tool failing is a different and less interesting case than when it finds the issue it was designed to detect.

Also, if a tool has a risk of false positives, it should be attached to one of the buildbots that isn't one of the few required to make a commit. It should simply report failures rather than bringing all development to a halt.

[AlexWaygood]

#102745 has fixed the issue with the C analyzer. Another issue already exists for the patchcheck.py problem I encountered in #102735. Closing as completed.