lgi-devs / lgi-devs/lgi

Creating GLib.Bytes() from native pointer fails

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#69 2 comments 0 reactions 0 assignees View on GitHub

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

Description

For GObject based types I can just pass the native pointer to the constructor to wrap native pointer.

But that doesn't work for record based types like GBytes():

GLib = require("lgi").GLib
b = GLib.Bytes("foo")
b2 = GLib.Bytes(b._native)
.../lgi/record.lua:156: bad argument #2 to 'ctor' (table expected, got userdata)
stack traceback:
        [C]: in function 'ctor'
        .../lgi/record.lua:156: in function <.../lgi/record.lua:156>
        (tail call): ?
        stdin:3: in main chunk
        [C]: ?

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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 at lgi/record.lua:156, where the record constructor rejects the userdata passed as b._native. Reproduce the GLib.Bytes example from the issue, then verify that constructing from the native pointer succeeds without the shown error.

Written by the indexing model from the issue text.

Assessment

Tech stack
lua
Domain
tooling
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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