Fix -Zmeta-stats ICE by giving FileEncoder file read permissions
#101014
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nnethercote
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Sep 20, 2022
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I hit this ICE today and I can confirm that this PR fixes it. Please add the suggested comment and then we are good to go. (It would also be good to have a @bors delegate=isikkema |
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@bors r+ rollup |
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…der-no-read-perms, r=isikkema Fix -Zmeta-stats ICE by giving `FileEncoder` file read permissions Fixes rust-lang#101001 As far as I can tell, rust-lang#101001 is caused because the file is being created with write-only permissions here: https://github.com/rust-lang/rust/blob/master/compiler/rustc_serialize/src/opaque.rs#L196 but it is trying to be read here: https://github.com/rust-lang/rust/blob/master/compiler/rustc_metadata/src/rmeta/encoder.rs#L780 This PR attempts to fix this by creating/opening the file with the same permissions as `File::create()` with the addition of read.
This was referenced Sep 20, 2022
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Rollup of 12 pull requests Successful merges: - rust-lang#100250 (Manually cleanup token stream when macro expansion aborts.) - rust-lang#101014 (Fix -Zmeta-stats ICE by giving `FileEncoder` file read permissions) - rust-lang#101958 (Improve error for when query is unsupported by crate) - rust-lang#101976 (MirPhase: clarify that linting is not a semantic change) - rust-lang#102001 (Use LLVM C-API to build atomic cmpxchg and fence) - rust-lang#102008 (Add GUI test for notable traits element position) - rust-lang#102013 (Simplify rpitit handling on lower_fn_decl) - rust-lang#102021 (some post-valtree cleanup) - rust-lang#102027 (rustdoc: remove `docblock` class from `item-decl`) - rust-lang#102034 (rustdoc: remove no-op CSS `h1-6 { border-bottom-color }`) - rust-lang#102038 (Make the `normalize-overflow` rustdoc test actually do something) - rust-lang#102053 (:arrow_up: rust-analyzer) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Fixes #101001
As far as I can tell, #101001 is caused because the file is being created with write-only permissions here: https://github.com/rust-lang/rust/blob/master/compiler/rustc_serialize/src/opaque.rs#L196
but it is trying to be read here: https://github.com/rust-lang/rust/blob/master/compiler/rustc_metadata/src/rmeta/encoder.rs#L780
This PR attempts to fix this by creating/opening the file with the same permissions as
File::create()with the addition of read.