Implement RFC #18#14479
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emberian wants to merge 5 commits intorust-lang:masterfrom
emberian:struct-undef-repr
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Implement RFC #18#14479emberian wants to merge 5 commits intorust-lang:masterfrom emberian:struct-undef-repr
emberian wants to merge 5 commits intorust-lang:masterfrom
emberian:struct-undef-repr
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As of RFC 18, struct layout is undefined. Opting into a C-compatible struct layout is now down with #[repr(C)]. For consistency, specifying a packed layout is now also down with #[repr(packed)]. Both can be specified. [breaking-change]
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Ah yes, stupid cfg'd code!
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@alexcrichton at this point I'd rather just overhaul the ctypes lint to be more precise, and done after trans. Right now it handwaves away things like generic structs. I feel like: should be a warning where T is not |
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At minimum you may want to deal with pointer types to structs, as those are probably the most common way of dealing with FFI structs. A fancier lint could come later. |
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Closing due to inactivity, but feel free to reopen with a rebase! |
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Desugar async fn completely fix rust-lang#14479
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Closes #14309.
Extends the ctypes lint to warn when a struct not annotated with
#[repr(C)] is used in an FFI function.