Rollup of 7 pull requests #70053
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Rollup of 7 pull requests #70053
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…y` in a buggy manner
expand: Implement something similar to `#[cfg(accessible(path))]` cc rust-lang#64797 The feature is implemented as a `#[cfg_accessible(path)]` attribute macro rather than as `#[cfg(accessible(path))]` because it needs to wait until `path` becomes resolvable, and `cfg` cannot wait, but macros can wait. Later we can think about desugaring or not desugaring `#[cfg(accessible(path))]` into `#[cfg_accessible(path)]`. This implementation is also incomplete in the sense that it never returns "false" from `cfg_accessible(path)`, it requires some tweaks to resolve, which is not quite ready to answer queries like this during early resolution. However, the most important part of this PR is not `cfg_accessible` itself, but expansion infrastructure for retrying expansions. Before this PR we could say "we cannot resolve this macro path, let's try it later", with this PR we can say "we cannot expand this macro, let's try it later" as well. This is a pre-requisite for - turning `#[derive(...)]` into a regular attribute macro, - properly supporting eager expansion for macros that cannot yet be resolved like ``` fn main() { println!(not_available_yet!()); } macro_rules! make_available { () => { #[macro_export] macro_rules! not_available_yet { () => { "Hello world!" } }} } make_available!(); ```
VariantSizeDifferences: bail on SizeOverflow Fixes rust-lang#69485. r? @oli-obk
resolve: Fix regression in resolution of raw keywords in paths Fixes rust-lang#63882.
Bump the bootstrap compiler
Use sublice patterns to avoid computing the len r? @Centril
…unimplemented, r=eddyb Fiddle `ParamEnv` through to a place that used to use `ParamEnv::empty` in a buggy manner cc rust-lang#69981 (comment) r? @eddyb
Allow `hir().find` to return `None` Fixes rust-lang#70041 r? @eddyb
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@bors r+ p=7 rollup=never |
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📌 Commit 9d325cf has been approved by |
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⌛ Testing commit 9d325cf with merge b9fa22199c2a75e48c17f5d5cbbd04b3d52af2d7... |
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💔 Test failed - checks-azure |
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@bors retry |
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Mar 16, 2020
Rollup of 7 pull requests Successful merges: - #69870 (expand: Implement something similar to `#[cfg(accessible(path))]`) - #69881 (VariantSizeDifferences: bail on SizeOverflow) - #70000 (resolve: Fix regression in resolution of raw keywords in paths) - #70029 (Bump the bootstrap compiler) - #70046 (Use sublice patterns to avoid computing the len) - #70049 (Fiddle `ParamEnv` through to a place that used to use `ParamEnv::empty` in a buggy manner) - #70051 (Allow `hir().find` to return `None`) Failed merges: r? @ghost
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@bors r- |
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Successful merges:
#[cfg(accessible(path))]#69870 (expand: Implement something similar to#[cfg(accessible(path))])ParamEnvthrough to a place that used to useParamEnv::emptyin a buggy manner #70049 (FiddleParamEnvthrough to a place that used to useParamEnv::emptyin a buggy manner)hir().findto returnNone#70051 (Allowhir().findto returnNone)Failed merges:
r? @ghost