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Delegate from `std::env::ArgsOs` to the methods of the inner
platform-specific iterators, when it would be more efficient than just
using the default methods of its own impl. Most platforms use
`vec::IntoIter` as the inner type, so prioritize delegating to the
methods it provides.
`std::env::Args` is implemented atop `std::env::ArgsOs` and performs
UTF-8 validation with a panic for invalid data. This is a visible effect
which users certainly rely on, so we can't skip any arguments. Any
further iterator methods would skip some elements, so no change is
needed for that type.
Add `#[inline]` for any methods which simply wrap the inner iterator.
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in core/alloc/std only for now, and ignoring test files
Co-authored-by: Pavel Grigorenko <GrigorenkoPV@ya.ru>
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Also, update the same pattern of reuse in `sys::args` to match.
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Clarify why SGX code specifies linkage/symbol names for certain statics
Specifying linkage/symbol name is solely to ensure a single instance between the `std` crate and its unit tests.
Also update the symbol names as items have moved around a bit. The actual name isn't that important, it just needs to be unique. But for debugging it can be useful for it to point to the right place.
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Also update the symbol names as items have moved around a bit. The actual
name isn't that important, it just needs to be unique. But for debugging
it can be useful for it to point to the right place.
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The only differences between these implementations are that Unix uses
relaxed ordering, but Hermit uses acquire/release, and Unix truncates
`argv` at the first null pointer, but Hermit doesn't. Since Hermit aims
for Unix compatibility, unify it with Unix.
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