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make writes_through_immutable_pointer a hard error

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This commit is contained in:
Ralf Jung
2024-08-17 14:49:35 +02:00
parent 355a307a87
commit 8b642a1883
7 changed files with 23 additions and 102 deletions
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9
compiler/rustc_const_eval/src/const_eval/machine.rs
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@@ -12,7 +12,6 @@ use rustc_middle::query::TyCtxtAt;
use rustc_middle::ty::layout::{FnAbiOf, TyAndLayout};
use rustc_middle::ty::{self, TyCtxt};
use rustc_middle::{bug, mir};
use rustc_session::lint::builtin::WRITES_THROUGH_IMMUTABLE_POINTER;
use rustc_span::symbol::{sym, Symbol};
use rustc_span::Span;
use rustc_target::abi::{Align, Size};
@@ -729,8 +728,8 @@ impl<'tcx> interpret::Machine<'tcx> for CompileTimeMachine<'tcx> {
}
fn before_memory_write(
tcx: TyCtxtAt<'tcx>,
machine: &mut Self,
_tcx: TyCtxtAt<'tcx>,
_machine: &mut Self,
_alloc_extra: &mut Self::AllocExtra,
(_alloc_id, immutable): (AllocId, bool),
range: AllocRange,
@@ -741,9 +740,7 @@ impl<'tcx> interpret::Machine<'tcx> for CompileTimeMachine<'tcx> {
}
// Reject writes through immutable pointers.
if immutable {
super::lint(tcx, machine, WRITES_THROUGH_IMMUTABLE_POINTER, |frames| {
crate::errors::WriteThroughImmutablePointer { frames }
});
return Err(ConstEvalErrKind::WriteThroughImmutablePointer.into());
}
// Everything else is fine.
Ok(())