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Distinguish the dep-graph index space from the live node count - #160065

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Distinguish the dep-graph index space from the live node count#160065
xmakro wants to merge 1 commit into
rust-lang:mainfrom
xmakro:cleanup/dep-graph-index-space-len

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@xmakro xmakro commented Jul 28, 2026

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SerializedDepGraph::node_count() returns nodes.len(), the size of the index space, which includes indices that batch allocation left unused. In the same file, the local node_count in decode is the number of nodes actually encoded. The two differ and are easy to confuse.

@rustbot rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Jul 28, 2026
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xmakro commented Jul 28, 2026

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r? @cjgillot

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xmakro marked this pull request as ready for review July 28, 2026 13:00
@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jul 28, 2026
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@bors r+

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rust-bors Bot commented Jul 28, 2026

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📌 Commit e945118 has been approved by cjgillot

It is now in the queue for this repository.

@rust-bors rust-bors Bot added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jul 28, 2026
JonathanBrouwer added a commit to JonathanBrouwer/rust that referenced this pull request Jul 28, 2026
…ce-len, r=cjgillot

Distinguish the dep-graph index space from the live node count

`SerializedDepGraph::node_count()` returns `nodes.len()`, the size of the index space, which includes indices that batch allocation left unused. In the same file, the local `node_count` in `decode` is the number of nodes actually encoded. The two differ and are easy to confuse.
rust-bors Bot pushed a commit that referenced this pull request Jul 28, 2026
…uwer

Rollup of 14 pull requests

Successful merges:

 - #159990 (Many "predicate"-to-"clause" renamings)
 - #159665 (Replace most `Ty::new_fn_def` calls with `type_of` queries directly)
 - #159687 (rustdoc: Set tracing max_level_info when debug-logging is false)
 - #160065 (Distinguish the dep-graph index space from the live node count)
 - #159978 (run intrinsic-test by default on x86_64-gnu)
 - #160008 (Avoid stale closure recovery state across statements)
 - #160027 (Add regression test for #132767)
 - #160030 (Update `browser-ui-test` version to `0.25.0`)
 - #160046 (Improve consistency of attribute error messages (part 2))
 - #160056 (Fix associated function suggestion for generic ADTs)
 - #160069 (Update Rust crate tracing-subscriber to v0.3.23 [SECURITY])
 - #160071 (sanitize_standard_fds: clarify macos comment)
 - #160076 (use unstable features when updating dependencies)
 - #160088 (fix 404 url in src/doc/rustdoc.md)
JonathanBrouwer added a commit to JonathanBrouwer/rust that referenced this pull request Jul 28, 2026
…ce-len, r=cjgillot

Distinguish the dep-graph index space from the live node count

`SerializedDepGraph::node_count()` returns `nodes.len()`, the size of the index space, which includes indices that batch allocation left unused. In the same file, the local `node_count` in `decode` is the number of nodes actually encoded. The two differ and are easy to confuse.
JonathanBrouwer added a commit to JonathanBrouwer/rust that referenced this pull request Jul 28, 2026
…ce-len, r=cjgillot

Distinguish the dep-graph index space from the live node count

`SerializedDepGraph::node_count()` returns `nodes.len()`, the size of the index space, which includes indices that batch allocation left unused. In the same file, the local `node_count` in `decode` is the number of nodes actually encoded. The two differ and are easy to confuse.
rust-bors Bot pushed a commit that referenced this pull request Jul 28, 2026
…uwer

Rollup of 21 pull requests

Successful merges:

 - #159990 (Many "predicate"-to-"clause" renamings)
 - #159665 (Replace most `Ty::new_fn_def` calls with `type_of` queries directly)
 - #159687 (rustdoc: Set tracing max_level_info when debug-logging is false)
 - #160057 (refactor(mir-transform): Calculate optimization status inside `run_passes_inner`)
 - #160060 (codegen: skip stores for entirely-uninit constant aggregate fields, attempt #2)
 - #160063 (Fix ICE when dumping the dep graph with the parallel frontend)
 - #160065 (Distinguish the dep-graph index space from the live node count)
 - #158038 (Split register_tool into register_attribute_tool and register_lint_tool)
 - #159776 (remove const hack in alloc)
 - #159978 (run intrinsic-test by default on x86_64-gnu)
 - #160008 (Avoid stale closure recovery state across statements)
 - #160027 (Add regression test for #132767)
 - #160030 (Update `browser-ui-test` version to `0.25.0`)
 - #160046 (Improve consistency of attribute error messages (part 2))
 - #160056 (Fix associated function suggestion for generic ADTs)
 - #160069 (Update Rust crate tracing-subscriber to v0.3.23 [SECURITY])
 - #160071 (sanitize_standard_fds: clarify macos comment)
 - #160076 (use unstable features when updating dependencies)
 - #160092 (miri ui tests: don't run native tests on stage 0)
 - #160093 (Switch cargo assignments to weihanglo)
 - #160094 (Update assignment for docs)
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