bjoernager/rust
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Add flag for stricter checks on uninit/zeroed

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This commit is contained in:
5225225 2022-05-23 16:44:05 +01:00
parent 43d9f3859e
commit dd9f31d000
6 changed files with 116 additions and 26 deletions
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15
compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs
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@ -58,6 +58,7 @@ pub(crate) use llvm::codegen_llvm_intrinsic_call;
use rustc_middle::ty::print::with_no_trimmed_paths;
use rustc_middle::ty::subst::SubstsRef;
use rustc_span::symbol::{kw, sym, Symbol};
use rustc_target::abi::InitKind;
use crate::prelude::*;
use cranelift_codegen::ir::AtomicRmwOp;
@ -671,7 +672,12 @@ fn codegen_regular_intrinsic_call<'tcx>(
return;
}
if intrinsic == sym::assert_zero_valid && !layout.might_permit_raw_init(fx, /*zero:*/ true) {
if intrinsic == sym::assert_zero_valid
&& !layout.might_permit_raw_init(
fx,
InitKind::Zero,
fx.tcx.sess.opts.debugging_opts.strict_init_checks) {
with_no_trimmed_paths!({
crate::base::codegen_panic(
fx,
@ -682,7 +688,12 @@ fn codegen_regular_intrinsic_call<'tcx>(
return;
}
if intrinsic == sym::assert_uninit_valid && !layout.might_permit_raw_init(fx, /*zero:*/ false) {
if intrinsic == sym::assert_uninit_valid
&& !layout.might_permit_raw_init(
fx,
InitKind::Uninit,
fx.tcx.sess.opts.debugging_opts.strict_init_checks) {
with_no_trimmed_paths!({
crate::base::codegen_panic(
fx,