lgi-devs / lgi-devs/lgi

Small issue in the cairo binding

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#162 2 comments 0 reactions 0 assignees View on GitHub

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Dominant language
Lua
Stars
491
Forks
81
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No merged PRs in 30d

Description

>>> return tostring(require('lgi').cairo.PathData._field.header[3])
stdin:1: '__tostring' must return a string
stack traceback:
	[C]: in function 'tostring'
	stdin:1: in main chunk
	[C]: in ?
>>> return getmetatable(require('lgi').cairo.PathData._field.header[3]):__tostring()
nil

And similarly for cairo.PathData._field.point. I got this error by attempting to perform a recursive dump on _G; I'm not sure where else it may come up.

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Research direction

Start by reproducing the shown tostring call for cairo.PathData._field.header[3], then check the corresponding cairo.PathData._field.point case. Trace the Cairo binding code that creates these fields; done means both values have a valid string conversion instead of raising '__tostring' must return a string.

Written by the indexing model from the issue text.

Assessment

Tech stack
lua
Domain
computer-graphics
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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