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`extern "C"` plus #[repr(C)] enables calling and being called by C, with bindgen and cbindgen generating headers. `#![no_std]` drops the standard library for embedded and on-chain targets, keeping core and optionally alloc.
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Systems · hard
39. FFI and no_std
Talking to C and running bare metal.
1 min read2 questionsup to 50 XPtopic 39/50
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1. Which attribute fixes struct layout for FFI?
2. no_std keeps which crate?
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