01469693de
fold instead of obliterating args Fixes #105608 we call `const_eval_resolve` on the following constant: ``` def: playground::{impl#0}::and::{constant#0}, substs: [ ConstKind::Unevaluated { def: playground::{impl#0}::and::{constant#0}, substs: [ ConstKind::Value(0x0), _, ] } _, ], ``` when expanded out to `ConstKind::Expr` there are no infer vars so we attempt to evaluate it after replacing infer vars with garbage, however the current logic for replacing with garbage replaces _the whole arg containing the infer var_ rather than just the infer var. This means that after garbage replacement has occured we attempt to evaluate: ``` def: playground::{impl#0}::and::{constant#0}, substs: [ PLACEHOLDER, PLACEHOLDER, ], ``` Which then leads to ctfe being unable to evaluate the const. With this PR we attempt to evaluate: ``` def: playground::{impl#0}::and::{constant#0}, substs: [ ConstKind::Unevaluated { def: playground::{impl#0}::and::{constant#0}, substs: [ ConstKind::Value(0x0), PLACEHOLDER, ] } PLACEHOLDER, ], ``` which ctfe _can_ handle. I am not entirely sure why this function is supposed to replace params with placeholders rather than just inference vars 🤔 |
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| doc | ||
| etc | ||
| librustdoc | ||
| llvm-project@3dfd4d93fa | ||
| rustdoc-json-types | ||
| test | ||
| tools | ||
| README.md | ||
| stage0.json | ||
| version | ||
This directory contains the source code of the rust project, including:
- The test suite
- The bootstrapping build system
- Various submodules for tools, like cargo, etc.
For more information on how various parts of the compiler work, see the rustc dev guide.