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assertion failed: offset < min_length in GVN #118992

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saethlin opened this issue Dec 15, 2023 · 0 comments · Fixed by #119052
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assertion failed: offset < min_length in GVN #118992

saethlin opened this issue Dec 15, 2023 · 0 comments · Fixed by #119052
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A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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saethlin commented Dec 15, 2023 •
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fn main() {
    let slf = "f".as_bytes();
    let _n = slf[slf.len() - 2];
}

Compile with

-Zmir-opt-level=1 -Zmir-enable-passes=+GVN -Zinline-mir
@saethlin saethlin added T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. C-bug Category: This is a bug. A-mir-opt Area: MIR optimizations labels Dec 15, 2023
@rustbot rustbot added the needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. label Dec 15, 2023
@saethlin saethlin added I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ and removed needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. labels Dec 15, 2023
@cjgillot cjgillot mentioned this issue Dec 17, 2023
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@saethlin saethlin changed the title assertion failed: offset < min_length in GVN when building b64 assertion failed: offset < min_length in GVN Dec 17, 2023
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this issue Dec 17, 2023
@matthiaskrgr
Rollup merge of rust-lang#119052 - cjgillot:gvn-index-overflow, r=com…
39fe059 
…piler-errors

Avoid overflow in GVN constant indexing.

Fixes rust-lang#118992
Fixes rust-lang#119008
rust-timer added a commit to rust-lang-ci/rust that referenced this issue Dec 17, 2023
@rust-timer
Unrolled build for rust-lang#119052
5a7f7be 
Rollup merge of rust-lang#119052 - cjgillot:gvn-index-overflow, r=compiler-errors

Avoid overflow in GVN constant indexing.

Fixes rust-lang#118992
Fixes rust-lang#119008
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A-mir-opt Area: MIR optimizations C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Avoid overflow in GVN constant indexing. cjgillot/rust
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