Use cfg_os_version_min in std
#136868
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Use cfg_os_version_min in std
#136868
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−241
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Also convert OSVersion into a proper struct for better type-safety.
Based on in-progress RFC: rust-lang/rfcs#3750. Only implemented for Apple platforms for now, but written in a way that should be easily expandable to include other platforms.
This was referenced Feb 11, 2025
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☔ The latest upstream changes (presumably #137046) made this pull request unmergeable. Please resolve the merge conflicts. |
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…, r=ibraheemdev Change the syntax of the internal `weak!` macro Change the syntax to include parameter names and a trailing semicolon. Motivation: - Mirror the `syscall!` macro. - Allow rustfmt to format it (when wrapped in parentheses, and when not inside `cfg_if!`). - For better documentation (having the parameter names available in the source code is a bit nicer). - Allow a future improvement to this macro where we can sometimes use the symbol directly when it's statically known to be available (and thus need the parameter names to be available), see rust-lang#136868. r? libs
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…, r=ibraheemdev Change the syntax of the internal `weak!` macro Change the syntax to include parameter names and a trailing semicolon. Motivation: - Mirror the `syscall!` macro. - Allow rustfmt to format it (when wrapped in parentheses, and when not inside `cfg_if!`). - For better documentation (having the parameter names available in the source code is a bit nicer). - Allow a future improvement to this macro where we can sometimes use the symbol directly when it's statically known to be available (and thus need the parameter names to be available), see rust-lang#136868. r? libs
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…, r=ibraheemdev Change the syntax of the internal `weak!` macro Change the syntax to include parameter names and a trailing semicolon. Motivation: - Mirror the `syscall!` macro. - Allow rustfmt to format it (when wrapped in parentheses, and when not inside `cfg_if!`). - For better documentation (having the parameter names available in the source code is a bit nicer). - Allow a future improvement to this macro where we can sometimes use the symbol directly when it's statically known to be available (and thus need the parameter names to be available), see rust-lang#136868. r? libs
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Rollup merge of rust-lang#138988 - madsmtm:internal-weak-macro-syntax, r=ibraheemdev Change the syntax of the internal `weak!` macro Change the syntax to include parameter names and a trailing semicolon. Motivation: - Mirror the `syscall!` macro. - Allow rustfmt to format it (when wrapped in parentheses, and when not inside `cfg_if!`). - For better documentation (having the parameter names available in the source code is a bit nicer). - Allow a future improvement to this macro where we can sometimes use the symbol directly when it's statically known to be available (and thus need the parameter names to be available), see rust-lang#136868. r? libs
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…, r=ibraheemdev Change the syntax of the internal `weak!` macro Change the syntax to include parameter names and a trailing semicolon. Motivation: - Mirror the `syscall!` macro. - Allow rustfmt to format it (when wrapped in parentheses, and when not inside `cfg_if!`). - For better documentation (having the parameter names available in the source code is a bit nicer). - Allow a future improvement to this macro where we can sometimes use the symbol directly when it's statically known to be available (and thus need the parameter names to be available), see rust-lang#136868. r? libs
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Use
cfg(os_version_min)to avoid weak linkage when we statically know that a symbol is available.Builds upon #136867 (tracking issue #136866), hence why this is still a draft. See the diff in the last commit.
NOTE: This partly exposes implementation details of
cfg(os_version_min)to-Zbuild-std, namely the ability to unconditionally select the newer implementations when passing*_DEPLOYMENT_TARGET. This should only be a performance improvement (or a regression, if we decide to remove the feature in the future).r? rust-lang/libs
@rustbot label O-apple O-unix O-android