bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Comment for_diagnostics flag.

Browse source
This commit is contained in:
Camille GILLOT 2023-11-01 19:01:55 +00:00
parent 224e29030a
commit f512f91258
1 changed files with 5 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

5
compiler/rustc_const_eval/src/const_eval/eval_queries.rs
View file

@ -106,6 +106,11 @@ pub(crate) fn mk_eval_cx<'mir, 'tcx>(
} }
/// This function converts an interpreter value into a MIR constant. /// This function converts an interpreter value into a MIR constant.
///
/// The `for_diagnostics` flag turns the usual rules for returning `ConstValue::Scalar` into a
/// best-effort attempt. This is not okay for use in const-eval sine it breaks invariants rustc
/// relies on, but it is okay for diagnostics which will just give up gracefully when they
/// encounter an `Indirect` they cannot handle.
#[instrument(skip(ecx), level = "debug")] #[instrument(skip(ecx), level = "debug")]
pub(super) fn op_to_const<'tcx>( pub(super) fn op_to_const<'tcx>(
ecx: &CompileTimeEvalContext<'_, 'tcx>, ecx: &CompileTimeEvalContext<'_, 'tcx>,