Stream: git-wasmtime

Topic: wasmtime / PR #9393 Increase alignment of empty mmap poin...


view this post on Zulip Wasmtime GitHub notifications bot (Oct 08 2024 at 01:48):

alexcrichton requested fitzgen for a review on PR #9393.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 08 2024 at 01:48):

alexcrichton opened PR #9393 from alexcrichton:fix-under-aligned-empty-mmap-pointer to bytecodealliance:main:

This commit updates platform implementations of Mmap::new_empty() to use a shared helper to create a pointer with a higher alignment than one. This fixes a debug assert tripping in niche configurations of the pooling allocator where if no virtual memory is given and table lazy init is disabled then a module could trip a debug-only assert about a slice being created from a raw pointer that is not properly aligned. The fix here is to use a helper that starts with an over-aligned empty slice which is then casted down to a byte slice.

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view this post on Zulip Wasmtime GitHub notifications bot (Oct 08 2024 at 01:48):

alexcrichton requested wasmtime-core-reviewers for a review on PR #9393.

view this post on Zulip Wasmtime GitHub notifications bot (Oct 08 2024 at 15:31):

fitzgen submitted PR review:

:+1:

view this post on Zulip Wasmtime GitHub notifications bot (Oct 08 2024 at 15:47):

fitzgen merged PR #9393.


Last updated: Dec 23 2024 at 13:07 UTC