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regression: type inference changes #123290

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Mark-Simulacrum opened this issue Mar 31, 2024 · 2 comments
Closed

regression: type inference changes #123290

Mark-Simulacrum opened this issue Mar 31, 2024 · 2 comments
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E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example I-prioritize Issue: Indicates that prioritization has been requested for this issue. regression-from-stable-to-beta Performance or correctness regression from stable to beta. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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@Mark-Simulacrum
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[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/polkavm-0.3.0/src/compiler.rs:424:31
[INFO] [stdout]     |
[INFO] [stdout] 424 |         let mut on_hostcall = wrap_on_hostcall(on_hostcall);
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^ cannot infer type of the type parameter `S` declared on the function `wrap_on_hostcall`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: sandbox::Sandbox`
[INFO] [stdout]     = help: the following types implement trait `sandbox::Sandbox`:
[INFO] [stdout]               generic::Sandbox
[INFO] [stdout]               sandbox::linux::Sandbox
[INFO] [stdout] note: required by a bound in `wrap_on_hostcall`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/polkavm-0.3.0/src/compiler.rs:417:138
[INFO] [stdout]     |
[INFO] [stdout] 417 | ...s<'r>) -> Result<(), Trap> + '_ where S: Sandbox {
[INFO] [stdout]     |                                             ^^^^^^^ required by this bound in `wrap_on_hostcall`
[INFO] [stdout] help: consider specifying the generic argument
[INFO] [stdout]     |
[INFO] [stdout] 424 |         let mut on_hostcall = wrap_on_hostcall::<S>(on_hostcall);
[INFO] [stdout]     |                                               +++++
@Mark-Simulacrum Mark-Simulacrum added T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. regression-from-stable-to-beta Performance or correctness regression from stable to beta. labels Mar 31, 2024
@Mark-Simulacrum Mark-Simulacrum added this to the 1.78.0 milestone Mar 31, 2024
@rustbot rustbot added I-prioritize Issue: Indicates that prioritization has been requested for this issue. needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. labels Mar 31, 2024
@Mark-Simulacrum Mark-Simulacrum added E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example and removed needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. labels Mar 31, 2024
@compiler-errors
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compiler-errors commented Apr 1, 2024

This is a known regression that was FCPd #119849 (comment) and it was also fixed by lcnr in koute/polkavm#93

@apiraino
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apiraino commented Apr 2, 2024

@compiler-errors do the breaking changes in #119849 need to be in the release notes?

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E-needs-mcve Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example I-prioritize Issue: Indicates that prioritization has been requested for this issue. regression-from-stable-to-beta Performance or correctness regression from stable to beta. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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