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LLVM assert "Op types should be identical!" with iter_vec(fail){...} #2145
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Now I get
I guess this was fixed along with #2149. |
bors
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Sep 22, 2022
Save a created event for zero-size reborrows Currently, we don't save a created event for zero-sized reborrows. Attempting to use something from a zero-sized reborrow is surprisingly common, for example on `minimal-lexical==0.2.1` we previously just emit this: ``` Undefined Behavior: attempting a write access using <187021> at alloc72933[0x0], but that tag does not exist in the borrow stack for this location --> /root/rust/library/core/src/ptr/mod.rs:1287:9 | 1287 | copy_nonoverlapping(&src as *const T, dst, 1); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | | | attempting a write access using <187021> at alloc72933[0x0], but that tag does not exist in the borrow stack for this location | this error occurs as part of an access at alloc72933[0x0..0x8] | = help: this indicates a potential bug in the program: it performed an invalid operation, but the rules it violated are still experimental = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/stacked-borrows.md for further information = note: inside `std::ptr::write::<u64>` at /root/rust/library/core/src/ptr/mod.rs:1287:9 note: inside `minimal_lexical::stackvec::StackVec::push_unchecked` at /root/build/src/stackvec.rs:82:13 --> /root/build/src/stackvec.rs:82:13 | 82 | ptr::write(self.as_mut_ptr().add(self.len()), value); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ... backtrace continues... ``` Which leaves us with the question "where did we make this pointer?" because for every other diagnostic you get a "was created by" note, so I suspect people might be tempted to think there is a Miri bug here. I certainly was. --- This code duplication is so awful, I'm going to take a look at cleaning it up later. The fact that `ptr_get_alloc_id` can fail in this situation makes things annoying.
matthiaskrgr
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Apr 8, 2024
privacy: Stabilize lint `unnameable_types` This is the last piece of ["RFC rust-lang#2145: Type privacy and private-in-public lints"](rust-lang#48054). Having unstable lints is not very useful because you cannot even dogfood them in the compiler/stdlib in this case (rust-lang#113284). The worst thing that may happen when a lint is removed are some `removed_lints` warnings, but I haven't heard anyone suggesting removing this specific lint. This lint is allow-by-default and is supposed to be enabled explicitly. Some false positives are expected, because sometimes unnameable types are a legitimate pattern. This lint also have some unnecessary false positives, that can be fixed - see rust-lang#120146 and rust-lang#120149. Closes rust-lang#48054.
rust-timer
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Apr 8, 2024
Rollup merge of rust-lang#120144 - petrochenkov:unty, r=davidtwco privacy: Stabilize lint `unnameable_types` This is the last piece of ["RFC rust-lang#2145: Type privacy and private-in-public lints"](rust-lang#48054). Having unstable lints is not very useful because you cannot even dogfood them in the compiler/stdlib in this case (rust-lang#113284). The worst thing that may happen when a lint is removed are some `removed_lints` warnings, but I haven't heard anyone suggesting removing this specific lint. This lint is allow-by-default and is supposed to be enabled explicitly. Some false positives are expected, because sometimes unnameable types are a legitimate pattern. This lint also have some unnecessary false positives, that can be fixed - see rust-lang#120146 and rust-lang#120149. Closes rust-lang#48054.
celinval
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Jun 4, 2024
Compiletest behavior has changed to always failing fast after rust-lang#2045. This PR introduces a --no-fail-fast flag to compiletest which will execute the entire suite regardless of failure. The regression script uses --no-fail-fast so all failures in a suite are printed as part of the CI.
Kobzol
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bors
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Jan 2, 2025
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rustc fails with:
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