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Use constant eval to do strict validity checks

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This commit is contained in:
5225225
2022-07-14 22:42:47 +01:00
parent c2f428d2f3
commit 27412d1e3e
13 changed files with 161 additions and 94 deletions
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56
compiler/rustc_const_eval/src/interpret/intrinsics.rs
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@@ -15,7 +15,7 @@ use rustc_middle::ty::layout::LayoutOf as _;
use rustc_middle::ty::subst::SubstsRef;
use rustc_middle::ty::{Ty, TyCtxt};
use rustc_span::symbol::{sym, Symbol};
use rustc_target::abi::{Abi, Align, InitKind, Primitive, Size};
use rustc_target::abi::{Abi, Align, Primitive, Size};
use super::{
util::ensure_monomorphic_enough, CheckInAllocMsg, ImmTy, InterpCx, Machine, OpTy, PlaceTy,
@@ -413,35 +413,33 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
),
)?;
}
if intrinsic_name == sym::assert_zero_valid
&& !layout.might_permit_raw_init(
self,
InitKind::Zero,
self.tcx.sess.opts.unstable_opts.strict_init_checks,
)
{
M::abort(
self,
format!(
"aborted execution: attempted to zero-initialize type `{}`, which is invalid",
ty
),
)?;
if intrinsic_name == sym::assert_zero_valid {
let should_panic = !self.tcx.permits_zero_init(layout);
if should_panic {
M::abort(
self,
format!(
"aborted execution: attempted to zero-initialize type `{}`, which is invalid",
ty
),
)?;
}
}
if intrinsic_name == sym::assert_uninit_valid
&& !layout.might_permit_raw_init(
self,
InitKind::Uninit,
self.tcx.sess.opts.unstable_opts.strict_init_checks,
)
{
M::abort(
self,
format!(
"aborted execution: attempted to leave type `{}` uninitialized, which is invalid",
ty
),
)?;
if intrinsic_name == sym::assert_uninit_valid {
let should_panic = !self.tcx.permits_uninit_init(layout);
if should_panic {
M::abort(
self,
format!(
"aborted execution: attempted to leave type `{}` uninitialized, which is invalid",
ty
),
)?;
}
}
}
sym::simd_insert => {