rustc: More fixes for arch-independent hashing #36866
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r? @eddyb |
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(rust_highfive has picked a reviewer for you, use r? to override) |
This was referenced Sep 30, 2016
alexcrichton
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The description is no longer accurate and this sadly doesn't fix the symbol case, which is in librustc_trans/back/symbol_names.rs. If the wrapper would be generic then it'd work for symbols as well (and could be required by |
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@eddyb hm I'm... not sure how it worked? I wonder if maybe I tested the wrong thing? In any case I've updated with a generic wrapper which is unconditionally used by |
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@alexcrichton Looks great! r=me with updated PR description. |
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@bors: r=eddyb p=1 (higher priority for fixing a regression) |
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📌 Commit d690f1e has been approved by |
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Adding impl<'a> Hasher for Sha256Hasher<'a> {
fn write_usize(&mut self, i: usize) { bug!("can't do that here") }
fn write_isize(&mut self, i: isize) { bug!("can't do that here") }
}in |
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@TimNN yeah I found that the rabbit hole went pretty deep if we tried to avoid |
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@alexcrichton: That |
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It's hashing something before creating the |
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Oh yeah: https://github.com/rust-lang/rust/blob/master/src/librustc_trans/back/symbol_names.rs#L160. |
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Doing it only in |
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@TimNN I meant on top of the current PR. |
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@eddyb: Ah, then I misunderstood that part of your comment 😄 |
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⌛ Testing commit d690f1e with merge fc02ed5... |
In another attempt to fix rust-lang#36793 this commit attempts to head off any future problems by adding a custom `WidentUsizeHasher` which will widen any hashing of `isize` and `usize` to a `u64` as necessary. This obviates the need for a previous number of `as u64` annotations and will hopefully protect us against future problems here. Closes rust-lang#36793 (hopefully)
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@bors: r=eddyb force clean |
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📌 Commit faae99d has been approved by |
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rustc: More fixes for arch-independent hashing In another attempt to fix #36793 this commit attempts to head off any future problems by adding a custom `WidentUsizeHasher` which will widen any hashing of `isize` and `usize` to a `u64` as necessary. This obviates the need for a previous number of `as u64` annotations and will hopefully protect us against future problems here. Closes #36793 (hopefully)
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Accepting for backport since it fixes some nasty problems. |
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In another attempt to fix #36793 this commit attempts to head off any future
problems by adding a custom
WidentUsizeHasherwhich will widen any hashing ofisizeandusizeto au64as necessary. This obviates the need for aprevious number of
as u64annotations and will hopefully protect us againstfuture problems here.
Closes #36793 (hopefully)