WebAssembly / WebAssembly/wasi-libc

dlmalloc has license incompatible with Fedora policies

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Dominant language
C
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Description

Hi all,
this is an inquiry more that an issue: Is there any way to use this libc without dlmalloc?

Recently, Fedora removed approval for CC0-licensed code, generally due to possible patent trouble with such code. I do not really think that will ever happen here (although better safe than sorry); however, I would still like to comply with the policy when packaging.

I was so far unsuccessful in trying to build wasi-libc with any of the included muls malloc implementations, and I'm not sure that's possible without having mmap.

What can be done? Is there any other malloc implementation that could be used? Can I use the mmap-emulation code and some of the musl malloc(s) on top of it, or is that a bad idea?

Any help greatly appreciated.

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 by reviewing the included malloc implementations, the mmap-emulation code, and the wasi-libc build configuration mentioned in the issue. Check whether a non-CC0 allocator can be built and used under Fedora's policy; done means documenting or implementing a supported alternative without dlmalloc.

Written by the indexing model from the issue text.

Assessment

Tech stack
c, wasm
Domain
operating-systems
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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