Stream: git-wasmtime

Topic: wasmtime / PR #12884 Adjust behavior of 4gb memories with...


view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 08:14):

alexcrichton requested fitzgen for a review on PR #12884.

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 08:14):

alexcrichton requested wasmtime-core-reviewers for a review on PR #12884.

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 08:14):

alexcrichton opened PR #12884 from alexcrichton:custom-page-sizes-big-memory to bytecodealliance:main:

This commit adjust what happens when a linear memory grows up to 4gb large when custom page sizes are used. This is an open question in the upstream proposal at WebAssembly/custom-page-sizes#45 but without any special handling a return value of -1 is ambiguous if it succeeded or failed. For now eagerly trap memory operations reaching these conditions while the upstream specification question is resolved.

<!--
Please make sure you include the following information:

Our development process is documented in the Wasmtime book:
https://docs.wasmtime.dev/contributing-development-process.html

Please ensure all communication follows the code of conduct:
https://github.com/bytecodealliance/wasmtime/blob/main/CODE_OF_CONDUCT.md
-->

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 08:55):

alexcrichton updated PR #12884.

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 11:03):

github-actions[bot] added the label wasmtime:api on PR #12884.

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 12:47):

fitzgen submitted PR review.

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 12:47):

fitzgen added PR #12884 Adjust behavior of 4gb memories with custom page sizes to the merge queue.

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 13:26):

github-merge-queue[bot] removed PR #12884 Adjust behavior of 4gb memories with custom page sizes from the merge queue.

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 13:30):

alexcrichton updated PR #12884.

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 14:08):

alexcrichton updated PR #12884.

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 14:08):

alexcrichton has enabled auto merge for PR #12884.

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 14:52):

alexcrichton added PR #12884 Adjust behavior of 4gb memories with custom page sizes to the merge queue.

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 17:31):

alexcrichton merged PR #12884.

view this post on Zulip Wasmtime GitHub notifications bot (Mar 30 2026 at 17:31):

alexcrichton removed PR #12884 Adjust behavior of 4gb memories with custom page sizes from the merge queue.


Last updated: Apr 12 2026 at 23:10 UTC