[clang] [CIR] Implement partial array destroy handling (PR #190834)
via cfe-commits
cfe-commits at lists.llvm.org
Tue Apr 7 12:51:07 PDT 2026
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang
@llvm/pr-subscribers-clangir
Author: Andy Kaylor (andykaylor)
<details>
<summary>Changes</summary>
This implements EH cleanup handling that performs regular partial array destruction for array constructor loops with a destructed type. Because CIR represents array construction using an abstract operation, we do not go through the normal EH stack mechanism. Instead, we add a partial_dtor region to the cir.array.ctor operation indicating how a single element should be destructed. When the cir.array.ctor operation is expanded during LoweringPrepare, we create a cleanup scope with a partial array dtor loop in an EH cleanup region. This gets further expanded during CFG flattening to produce a control flow equivalent to that generated by classic codegen.
Assisted-by: Cursor / claude-4.6-opus-high
---
Patch is 26.52 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/190834.diff
6 Files Affected:
- (modified) clang/include/clang/CIR/Dialect/IR/CIROps.td (+48-17)
- (modified) clang/lib/CIR/CodeGen/CIRGenClass.cpp (+20-11)
- (modified) clang/lib/CIR/Dialect/IR/CIRDialect.cpp (+88-1)
- (modified) clang/lib/CIR/Dialect/Transforms/LoweringPrepare.cpp (+88-30)
- (modified) clang/test/CIR/CodeGen/array-ctor.cpp (+13)
- (added) clang/test/CIR/CodeGen/partial-array-cleanup.cpp (+163)
``````````diff
diff --git a/clang/include/clang/CIR/Dialect/IR/CIROps.td b/clang/include/clang/CIR/Dialect/IR/CIROps.td
index d2fd2df7ab7d1..bbe1ff71da9f3 100644
--- a/clang/include/clang/CIR/Dialect/IR/CIROps.td
+++ b/clang/include/clang/CIR/Dialect/IR/CIROps.td
@@ -4578,8 +4578,17 @@ def CIR_ArrayCtor : CIR_Op<"array.ctor"> {
let summary = "Initialize array elements with C++ constructors";
let description = [{
Initialize each array element using the same C++ constructor. This
- operation has one region, with one single block. The block has an
- incoming argument for the current array element to initialize.
+ operation has a `body` region and an optional `partial_dtor` region.
+ Both regions have a single block whose argument is a pointer to the
+ current array element.
+
+ The `body` region contains the constructor call for one element.
+
+ The `partial_dtor` region, when non-empty, contains the destructor call
+ for one element. During lowering, it is used to build a cleanup that
+ destroys already-constructed elements if a constructor throws. When the
+ element type has a trivial destructor or exceptions are disabled, the
+ `partial_dtor` region is left empty.
When `num_elements` is absent, `addr` must be a pointer to a fixed-size
CIR array type and the element count is derived from that array type.
@@ -4591,17 +4600,30 @@ def CIR_ArrayCtor : CIR_Op<"array.ctor"> {
Examples:
```mlir
+ // Fixed size without partial destructor:
cir.array.ctor(%0 : !cir.ptr<!cir.array<!rec_S x 42>>) {
^bb0(%arg0: !cir.ptr<!rec_S>):
cir.call @some_ctor(%arg0) : (!cir.ptr<!rec_S>) -> ()
cir.yield
}
+ // Variable size without partial destructor:
cir.array.ctor(%ptr, %n : !cir.ptr<!rec_S>, !u64i) {
^bb0(%arg0: !cir.ptr<!rec_S>):
cir.call @some_ctor(%arg0) : (!cir.ptr<!rec_S>) -> ()
cir.yield
}
+
+ // Fixed size with partial destructor:
+ cir.array.ctor(%0 : !cir.ptr<!cir.array<!rec_S x 42>>) {
+ ^bb0(%arg0: !cir.ptr<!rec_S>):
+ cir.call @some_ctor(%arg0) : (!cir.ptr<!rec_S>) -> ()
+ cir.yield
+ } partial_dtor {
+ ^bb0(%arg0: !cir.ptr<!rec_S>):
+ cir.call @some_dtor(%arg0) : (!cir.ptr<!rec_S>) -> ()
+ cir.yield
+ }
```
}];
@@ -4610,32 +4632,41 @@ def CIR_ArrayCtor : CIR_Op<"array.ctor"> {
Optional<CIR_AnyIntType>:$num_elements
);
- let regions = (region SizedRegion<1>:$body);
- let assemblyFormat = [{
- $addr (`,` $num_elements^)? `:` qualified(type($addr))
- (`,` type($num_elements)^)? $body attr-dict
- }];
+ let regions = (region SizedRegion<1>:$body, AnyRegion:$partial_dtor);
+ let hasCustomAssemblyFormat = 1;
let builders = [
// Static form: addr is ptr<array<T x N>>, no num_elements.
OpBuilder<(ins "mlir::Value":$addr,
- "llvm::function_ref<void(mlir::OpBuilder &, mlir::Location)>":$regionBuilder), [{
- assert(regionBuilder && "builder callback expected");
+ "llvm::function_ref<void(mlir::OpBuilder &, mlir::Location)>":$bodyBuilder,
+ "llvm::function_ref<void(mlir::OpBuilder &, mlir::Location)>":$partialDtorBuilder), [{
+ assert(bodyBuilder && "builder callback expected");
mlir::OpBuilder::InsertionGuard guard($_builder);
- mlir::Region *r = $_state.addRegion();
$_state.addOperands(ValueRange{addr});
- $_builder.createBlock(r);
- regionBuilder($_builder, $_state.location);
+ mlir::Region *body = $_state.addRegion();
+ $_builder.createBlock(body);
+ bodyBuilder($_builder, $_state.location);
+ mlir::Region *partialDtor = $_state.addRegion();
+ if (partialDtorBuilder) {
+ $_builder.createBlock(partialDtor);
+ partialDtorBuilder($_builder, $_state.location);
+ }
}]>,
// Dynamic form: addr is ptr<T>, num_elements is the runtime count.
OpBuilder<(ins "mlir::Value":$addr, "mlir::Value":$num_elements,
- "llvm::function_ref<void(mlir::OpBuilder &, mlir::Location)>":$regionBuilder), [{
- assert(regionBuilder && "builder callback expected");
+ "llvm::function_ref<void(mlir::OpBuilder &, mlir::Location)>":$bodyBuilder,
+ "llvm::function_ref<void(mlir::OpBuilder &, mlir::Location)>":$partialDtorBuilder), [{
+ assert(bodyBuilder && "builder callback expected");
mlir::OpBuilder::InsertionGuard guard($_builder);
- mlir::Region *r = $_state.addRegion();
$_state.addOperands({addr, num_elements});
- $_builder.createBlock(r);
- regionBuilder($_builder, $_state.location);
+ mlir::Region *body = $_state.addRegion();
+ $_builder.createBlock(body);
+ bodyBuilder($_builder, $_state.location);
+ mlir::Region *partialDtor = $_state.addRegion();
+ if (partialDtorBuilder) {
+ $_builder.createBlock(partialDtor);
+ partialDtorBuilder($_builder, $_state.location);
+ }
}]>
];
diff --git a/clang/lib/CIR/CodeGen/CIRGenClass.cpp b/clang/lib/CIR/CodeGen/CIRGenClass.cpp
index f8d65fa9a6d33..02e074200204d 100644
--- a/clang/lib/CIR/CodeGen/CIRGenClass.cpp
+++ b/clang/lib/CIR/CodeGen/CIRGenClass.cpp
@@ -783,20 +783,15 @@ void CIRGenFunction::emitCXXAggrConstructorCall(
{
RunCleanupsScope scope(*this);
- // Evaluate the constructor and its arguments in a regular
- // partial-destroy cleanup.
- if (getLangOpts().Exceptions &&
- !ctor->getParent()->hasTrivialDestructor()) {
- cgm.errorNYI(e->getSourceRange(), "partial array cleanups");
- }
+ bool needsPartialArrayCleanup =
+ getLangOpts().Exceptions &&
+ !ctor->getParent()->hasTrivialDestructor();
auto emitCtorBody = [&](mlir::OpBuilder &b, mlir::Location l) {
mlir::BlockArgument arg =
b.getInsertionBlock()->addArgument(ptrToElmType, l);
Address curAddr = Address(arg, elementType, eltAlignment);
assert(!cir::MissingFeatures::sanitizers());
- // Match CGClass::EmitCXXAggrConstructorCall: zero-initialize each element
- // in the array-ctor loop before invoking the constructor for that slot.
if (zeroInitialize)
emitNullInitialization(l, curAddr, type);
auto currAVS = AggValueSlot::forAddr(
@@ -809,16 +804,30 @@ void CIRGenFunction::emitCXXAggrConstructorCall(
cir::YieldOp::create(b, l);
};
- // Emit the per-element initialization.
+ llvm::function_ref<void(mlir::OpBuilder &, mlir::Location)>
+ emitPartialDtorBody = nullptr;
+ auto partialDtorBuilder = [&](mlir::OpBuilder &b, mlir::Location l) {
+ mlir::BlockArgument arg =
+ b.getInsertionBlock()->addArgument(ptrToElmType, l);
+ Address curAddr = Address(arg, elementType, eltAlignment);
+ emitCXXDestructorCall(ctor->getParent()->getDestructor(), Dtor_Complete,
+ /*forVirtualBase=*/false,
+ /*delegating=*/false, curAddr, type);
+ cir::YieldOp::create(b, l);
+ };
+ if (needsPartialArrayCleanup)
+ emitPartialDtorBody = partialDtorBuilder;
+
if (useDynamicArrayCtor) {
cir::ArrayCtor::create(builder, loc, dynamicElPtr, numElements,
- emitCtorBody);
+ emitCtorBody, emitPartialDtorBody);
} else {
cir::ArrayType arrayTy =
cir::ArrayType::get(elementType, constElementCount);
mlir::Value arrayOp =
builder.createPtrBitcast(arrayBase.getPointer(), arrayTy);
- cir::ArrayCtor::create(builder, loc, arrayOp, emitCtorBody);
+ cir::ArrayCtor::create(builder, loc, arrayOp, emitCtorBody,
+ emitPartialDtorBody);
}
}
}
diff --git a/clang/lib/CIR/Dialect/IR/CIRDialect.cpp b/clang/lib/CIR/Dialect/IR/CIRDialect.cpp
index ab1c0b453ac18..3e020e52ebece 100644
--- a/clang/lib/CIR/Dialect/IR/CIRDialect.cpp
+++ b/clang/lib/CIR/Dialect/IR/CIRDialect.cpp
@@ -341,7 +341,94 @@ template <typename Op> static LogicalResult verifyArrayCtorDtor(Op op) {
return success();
}
-LogicalResult cir::ArrayCtor::verify() { return verifyArrayCtorDtor(*this); }
+ParseResult cir::ArrayCtor::parse(OpAsmParser &parser, OperationState &result) {
+ OpAsmParser::UnresolvedOperand addrOperand;
+ OpAsmParser::UnresolvedOperand numElementsOperand;
+ bool hasNumElements = false;
+
+ if (parser.parseOperand(addrOperand))
+ return failure();
+
+ if (succeeded(parser.parseOptionalComma())) {
+ if (parser.parseOperand(numElementsOperand))
+ return failure();
+ hasNumElements = true;
+ }
+
+ if (parser.parseColon())
+ return failure();
+
+ mlir::Type addrType;
+ if (parser.parseType(addrType))
+ return failure();
+ if (parser.resolveOperand(addrOperand, addrType, result.operands))
+ return failure();
+
+ if (hasNumElements) {
+ if (parser.parseComma())
+ return failure();
+ mlir::Type numElementsType;
+ if (parser.parseType(numElementsType))
+ return failure();
+ if (parser.resolveOperand(numElementsOperand, numElementsType,
+ result.operands))
+ return failure();
+ }
+
+ Region *body = result.addRegion();
+ if (parser.parseRegion(*body))
+ return failure();
+
+ Region *partialDtor = result.addRegion();
+ if (!parser.parseOptionalKeyword("partial_dtor")) {
+ if (parser.parseRegion(*partialDtor))
+ return failure();
+ }
+
+ if (parser.parseOptionalAttrDict(result.attributes))
+ return failure();
+
+ return success();
+}
+
+void cir::ArrayCtor::print(OpAsmPrinter &p) {
+ p << " " << getAddr();
+ if (getNumElements())
+ p << ", " << getNumElements();
+
+ p << " : " << getAddr().getType();
+ if (getNumElements())
+ p << ", " << getNumElements().getType();
+
+ p << " ";
+ p.printRegion(getBody());
+
+ if (!getPartialDtor().empty()) {
+ p << " partial_dtor ";
+ p.printRegion(getPartialDtor());
+ }
+
+ p.printOptionalAttrDict(getOperation()->getAttrs());
+}
+
+LogicalResult cir::ArrayCtor::verify() {
+ if (failed(verifyArrayCtorDtor(*this)))
+ return failure();
+
+ mlir::Region &partialDtor = getPartialDtor();
+ if (!partialDtor.empty()) {
+ mlir::Block &dtorBlock = partialDtor.front();
+ if (dtorBlock.getNumArguments() != 1)
+ return emitOpError(
+ "partial_dtor must have exactly one block argument");
+
+ auto bodyArgTy = getBody().front().getArgument(0).getType();
+ if (dtorBlock.getArgument(0).getType() != bodyArgTy)
+ return emitOpError("partial_dtor block argument type must match "
+ "the body block argument type");
+ }
+ return success();
+}
LogicalResult cir::ArrayDtor::verify() { return verifyArrayCtorDtor(*this); }
//===----------------------------------------------------------------------===//
diff --git a/clang/lib/CIR/Dialect/Transforms/LoweringPrepare.cpp b/clang/lib/CIR/Dialect/Transforms/LoweringPrepare.cpp
index 91f082725711f..f5ab406789882 100644
--- a/clang/lib/CIR/Dialect/Transforms/LoweringPrepare.cpp
+++ b/clang/lib/CIR/Dialect/Transforms/LoweringPrepare.cpp
@@ -1369,13 +1369,16 @@ void LoweringPreparePass::buildCXXGlobalInitFunc() {
cir::ReturnOp::create(builder, f.getLoc());
}
+/// Lower a cir.array.ctor or cir.array.dtor into a do-while loop that
+/// iterates over every element. For cir.array.ctor ops whose partial_dtor
+/// region is non-empty, the ctor loop is wrapped in a cir.cleanup.scope whose
+/// EH cleanup performs a reverse destruction loop using the partial dtor body.
static void lowerArrayDtorCtorIntoLoop(cir::CIRBaseBuilderTy &builder,
clang::ASTContext *astCtx,
mlir::Operation *op, mlir::Type eltTy,
mlir::Value addr,
mlir::Value numElements,
uint64_t arrayLen, bool isCtor) {
- // Generate loop to call into ctor/dtor for every element.
mlir::Location loc = op->getLoc();
bool isDynamic = numElements != nullptr;
@@ -1432,7 +1435,7 @@ static void lowerArrayDtorCtorIntoLoop(cir::CIRBaseBuilderTy &builder,
// Clone the region body (ctor/dtor call and any setup ops like per-element
// zero-init) into the loop, remapping the block argument to the current
- // element pointer.
+ // element pointer.
auto cloneRegionBodyInto = [&](mlir::Block *srcBlock,
mlir::Value replacement) {
mlir::IRMapping map;
@@ -1443,34 +1446,89 @@ static void lowerArrayDtorCtorIntoLoop(cir::CIRBaseBuilderTy &builder,
}
};
- builder.createDoWhile(
- loc,
- /*condBuilder=*/
- [&](mlir::OpBuilder &b, mlir::Location loc) {
- auto currentElement = cir::LoadOp::create(b, loc, eltTy, tmpAddr);
- auto cmp = cir::CmpOp::create(builder, loc, cir::CmpOpKind::ne,
- currentElement, stop);
- builder.createCondition(cmp);
- },
- /*bodyBuilder=*/
- [&](mlir::OpBuilder &b, mlir::Location loc) {
- auto currentElement = cir::LoadOp::create(b, loc, eltTy, tmpAddr);
- if (isCtor) {
- cloneRegionBodyInto(bodyBlock, currentElement);
- mlir::Value stride = builder.getUnsignedInt(loc, 1, sizeTypeSize);
- auto nextElement = cir::PtrStrideOp::create(builder, loc, eltTy,
- currentElement, stride);
- builder.createStore(loc, nextElement, tmpAddr);
- } else {
- mlir::Value stride = builder.getSignedInt(loc, -1, sizeTypeSize);
- auto prevElement = cir::PtrStrideOp::create(builder, loc, eltTy,
- currentElement, stride);
- builder.createStore(loc, prevElement, tmpAddr);
- cloneRegionBodyInto(bodyBlock, prevElement);
- }
-
- builder.createYield(loc);
- });
+ mlir::Block *partialDtorBlock = nullptr;
+ if (auto arrayCtor = mlir::dyn_cast<cir::ArrayCtor>(op)) {
+ mlir::Region &partialDtor = arrayCtor.getPartialDtor();
+ if (!partialDtor.empty())
+ partialDtorBlock = &partialDtor.front();
+ }
+
+ auto emitCtorDtorLoop = [&]() {
+ builder.createDoWhile(
+ loc,
+ /*condBuilder=*/
+ [&](mlir::OpBuilder &b, mlir::Location loc) {
+ auto currentElement = cir::LoadOp::create(b, loc, eltTy, tmpAddr);
+ auto cmp = cir::CmpOp::create(builder, loc, cir::CmpOpKind::ne,
+ currentElement, stop);
+ builder.createCondition(cmp);
+ },
+ /*bodyBuilder=*/
+ [&](mlir::OpBuilder &b, mlir::Location loc) {
+ auto currentElement = cir::LoadOp::create(b, loc, eltTy, tmpAddr);
+ if (isCtor) {
+ cloneRegionBodyInto(bodyBlock, currentElement);
+ mlir::Value stride = builder.getUnsignedInt(loc, 1, sizeTypeSize);
+ auto nextElement = cir::PtrStrideOp::create(builder, loc, eltTy,
+ currentElement, stride);
+ builder.createStore(loc, nextElement, tmpAddr);
+ } else {
+ mlir::Value stride = builder.getSignedInt(loc, -1, sizeTypeSize);
+ auto prevElement = cir::PtrStrideOp::create(builder, loc, eltTy,
+ currentElement, stride);
+ builder.createStore(loc, prevElement, tmpAddr);
+ cloneRegionBodyInto(bodyBlock, prevElement);
+ }
+
+ builder.createYield(loc);
+ });
+ };
+
+ if (partialDtorBlock) {
+ cir::CleanupScopeOp::create(
+ builder, loc, cir::CleanupKind::EH,
+ /*bodyBuilder=*/
+ [&](mlir::OpBuilder &b, mlir::Location loc) {
+ emitCtorDtorLoop();
+ builder.createYield(loc);
+ },
+ /*cleanupBuilder=*/
+ [&](mlir::OpBuilder &b, mlir::Location loc) {
+ auto cur = cir::LoadOp::create(b, loc, eltTy, tmpAddr);
+ auto cmp = cir::CmpOp::create(builder, loc, cir::CmpOpKind::ne,
+ cur, begin);
+ cir::IfOp::create(
+ builder, loc, cmp, /*withElseRegion=*/false,
+ [&](mlir::OpBuilder &b, mlir::Location loc) {
+ builder.createDoWhile(
+ loc,
+ /*condBuilder=*/
+ [&](mlir::OpBuilder &b, mlir::Location loc) {
+ auto el =
+ cir::LoadOp::create(b, loc, eltTy, tmpAddr);
+ auto neq = cir::CmpOp::create(
+ builder, loc, cir::CmpOpKind::ne, el, begin);
+ builder.createCondition(neq);
+ },
+ /*bodyBuilder=*/
+ [&](mlir::OpBuilder &b, mlir::Location loc) {
+ auto el =
+ cir::LoadOp::create(b, loc, eltTy, tmpAddr);
+ mlir::Value negOne =
+ builder.getSignedInt(loc, -1, sizeTypeSize);
+ auto prev = cir::PtrStrideOp::create(
+ builder, loc, eltTy, el, negOne);
+ builder.createStore(loc, prev, tmpAddr);
+ cloneRegionBodyInto(partialDtorBlock, prev);
+ builder.createYield(loc);
+ });
+ cir::YieldOp::create(builder, loc);
+ });
+ builder.createYield(loc);
+ });
+ } else {
+ emitCtorDtorLoop();
+ }
if (ifOp)
cir::YieldOp::create(builder, loc);
diff --git a/clang/test/CIR/CodeGen/array-ctor.cpp b/clang/test/CIR/CodeGen/array-ctor.cpp
index 2233529a192c8..f58a46d4afc49 100644
--- a/clang/test/CIR/CodeGen/array-ctor.cpp
+++ b/clang/test/CIR/CodeGen/array-ctor.cpp
@@ -173,3 +173,16 @@ void multi_dimensional() {
// OGCG: br i1 %[[DONE]], label %[[EXIT:.*]], label %[[LOOP]]
// OGCG: [[EXIT]]:
// OGCG: ret void
+
+struct HasDtor {
+ HasDtor();
+ ~HasDtor();
+};
+
+void test_partial_array_cleanup() {
+ HasDtor s[4];
+}
+
+// CIR-BEFORE-LPP: cir.func {{.*}} @_Z26test_partial_array_cleanupv()
+
+// CIR: cir.func {{.*}} @_Z26test_partial_array_cleanupv()
diff --git a/clang/test/CIR/CodeGen/partial-array-cleanup.cpp b/clang/test/CIR/CodeGen/partial-array-cleanup.cpp
new file mode 100644
index 0000000000000..f41f80ab601e0
--- /dev/null
+++ b/clang/test/CIR/CodeGen/partial-array-cleanup.cpp
@@ -0,0 +1,163 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -Wno-unused-value -fclangir -fexceptions -fcxx-exceptions -emit-cir -mmlir --mlir-print-ir-before=cir-lowering-prepare %s -o %t.cir 2> %t-before-lp.cir
+// RUN: FileCheck --input-file=%t-before-lp.cir %s -check-prefix=CIR-BEFORE-LPP
+// RUN: FileCheck --input-file=%t.cir %s -check-prefix=CIR
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -Wno-unused-value -fexceptions -fcxx-exceptions -fclangir -emit-llvm %s -o %t-cir.ll
+// RUN: FileCheck --input-file=%t-cir.ll %s -check-prefix=LLVM
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -Wno-unused-value -fexceptions -fcxx-exceptions -emit-llvm %s -o %t.ll
+// RUN: FileCheck --input-file=%t.ll %s -check-prefix=OGCG
+
+struct S {
+ S();
+ ~S();
+};
+
+void test_partial_array_cleanup() {
+ S s[4];
+}
+
+// CIR-BEFORE-LPP: cir.func {{.*}} @_Z26test_partial_array_cleanupv()
+// CIR-BEFORE-LPP: %[[ARRAY:.*]] = cir.alloca !cir.array<!rec_S x 4>, !cir.ptr<!cir.array<!rec_S x 4>>, ["s", init]
+// CIR-BEFORE-LPP: cir.array.ctor %[[ARRAY]] : !cir.ptr<!cir.array<!rec_S x 4>> {
+// CIR-BEFORE-LPP: ^bb0(%[[CTOR_ARG:.*]]: !cir.ptr<!rec_S>):
+// CIR-BEFORE-LPP: cir.call @_ZN1SC1Ev(%[[CTOR_ARG]]) : (!cir.ptr<!rec_S>{{.*}}) -> ()
+// CIR-BEFORE-LPP: cir.yield
+// CIR-BEFORE-LPP: } partial_dtor {
+// CIR-BEFORE-LPP: ^bb0(%[[DTOR_ARG:.*]]: !cir.ptr<!rec_S>):
+// CIR-BEFORE-LPP: cir.call @_ZN1SD1Ev(%[[DTOR_ARG]]){{.*}} : (!cir.ptr<!rec_S>{{.*}}) -> ()
+// CIR-BEFORE-LPP: cir.yield
+// CIR-BEFORE-LPP: }
+
+// CIR: cir.func {{.*}} @_Z26test_partial_array_cleanupv()
+// CIR: %[[ARRAY:.*]] = cir.alloca !cir.array<!rec_S x 4>, !cir.ptr<!cir.array<!rec_S x 4>>, ["s", init]
+// CIR: %[[CONST4:.*]] = cir....
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/190834
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