[clang] c72d3a0 - [Clang] Handle consteval expression in array bounds expressions (#66222)
via cfe-commits
cfe-commits at lists.llvm.org
Thu Oct 5 02:36:34 PDT 2023
Author: cor3ntin
Date: 2023-10-05T11:36:27+02:00
New Revision: c72d3a0966afd2dcb4421dde922c0faf06d65c0e
URL: https://github.com/llvm/llvm-project/commit/c72d3a0966afd2dcb4421dde922c0faf06d65c0e
DIFF: https://github.com/llvm/llvm-project/commit/c72d3a0966afd2dcb4421dde922c0faf06d65c0e.diff
LOG: [Clang] Handle consteval expression in array bounds expressions (#66222)
The bounds of a c++ array is a _constant-expression_. And in C++ it is
also a constant expression.
But we also support VLAs, ie arrays with non-constant bounds.
We need to take care to handle the case of a consteval function (which
are specified to be only immediately called in non-constant contexts)
that appear in arrays bounds.
This introduces `Sema::isAlwayConstantEvaluatedContext`, and a flag in
ExpressionEvaluationContextRecord, such that immediate functions in
array bounds are always immediately invoked.
Sema had both `isConstantEvaluatedContext` and
`isConstantEvaluated`, so I took the opportunity to cleanup that.
The change in `TimeProfilerTest.cpp` is an unfortunate manifestation of
the problem that #66203 seeks to address.
Fixes #65520
Added:
Modified:
clang/docs/ReleaseNotes.rst
clang/include/clang/Parse/Parser.h
clang/include/clang/Sema/Sema.h
clang/lib/Parse/ParseDecl.cpp
clang/lib/Parse/ParseExpr.cpp
clang/lib/Sema/Sema.cpp
clang/lib/Sema/SemaCUDA.cpp
clang/lib/Sema/SemaChecking.cpp
clang/lib/Sema/SemaExpr.cpp
clang/lib/Sema/TreeTransform.h
clang/test/SemaCXX/cxx2a-consteval.cpp
clang/unittests/Support/TimeProfilerTest.cpp
Removed:
################################################################################
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 2362e479dfbbc5a..e498969b2c46bfb 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -434,6 +434,9 @@ Bug Fixes to C++ Support
- Fix crash caused by a spaceship operator returning a comparision category by
reference. Fixes:
(`#64162 <https://github.com/llvm/llvm-project/issues/64162>`_)
+- Fix a crash when calling a consteval function in an expression used as
+ the size of an array.
+ (`#65520 <https://github.com/llvm/llvm-project/issues/65520>`_)
- Clang no longer tries to capture non-odr-used variables that appear
in the enclosing expression of a lambda expression with a noexcept specifier.
diff --git a/clang/include/clang/Parse/Parser.h b/clang/include/clang/Parse/Parser.h
index 0e969f341bbe19f..79ac622fd03e24e 100644
--- a/clang/include/clang/Parse/Parser.h
+++ b/clang/include/clang/Parse/Parser.h
@@ -1766,6 +1766,7 @@ class Parser : public CodeCompletionHandler {
ExprResult ParseConstantExpressionInExprEvalContext(
TypeCastState isTypeCast = NotTypeCast);
ExprResult ParseConstantExpression();
+ ExprResult ParseArrayBoundExpression();
ExprResult ParseCaseExpression(SourceLocation CaseLoc);
ExprResult ParseConstraintExpression();
ExprResult
diff --git a/clang/include/clang/Sema/Sema.h b/clang/include/clang/Sema/Sema.h
index 79361aa19a567b6..1037086d12afb06 100644
--- a/clang/include/clang/Sema/Sema.h
+++ b/clang/include/clang/Sema/Sema.h
@@ -1062,20 +1062,6 @@ class Sema final {
}
};
- /// Whether the AST is currently being rebuilt to correct immediate
- /// invocations. Immediate invocation candidates and references to consteval
- /// functions aren't tracked when this is set.
- bool RebuildingImmediateInvocation = false;
-
- /// Used to change context to isConstantEvaluated without pushing a heavy
- /// ExpressionEvaluationContextRecord object.
- bool isConstantEvaluatedOverride;
-
- bool isConstantEvaluated() const {
- return ExprEvalContexts.back().isConstantEvaluated() ||
- isConstantEvaluatedOverride;
- }
-
/// RAII object to handle the state changes required to synthesize
/// a function body.
class SynthesizedFunctionScope {
@@ -1361,6 +1347,11 @@ class Sema final {
bool IsCurrentlyCheckingDefaultArgumentOrInitializer = false;
+ // We are in a constant context, but we also allow
+ // non constant expressions, for example for array bounds (which may be
+ // VLAs).
+ bool InConditionallyConstantEvaluateContext = false;
+
// When evaluating immediate functions in the initializer of a default
// argument or default member initializer, this is the declaration whose
// default initializer is being evaluated and the location of the call
@@ -9878,30 +9869,44 @@ class Sema final {
/// diagnostics that will be suppressed.
std::optional<sema::TemplateDeductionInfo *> isSFINAEContext() const;
- /// Determines whether we are currently in a context that
- /// is not evaluated as per C++ [expr] p5.
- bool isUnevaluatedContext() const {
+ /// Whether the AST is currently being rebuilt to correct immediate
+ /// invocations. Immediate invocation candidates and references to consteval
+ /// functions aren't tracked when this is set.
+ bool RebuildingImmediateInvocation = false;
+
+ /// Used to change context to isConstantEvaluated without pushing a heavy
+ /// ExpressionEvaluationContextRecord object.
+ bool isConstantEvaluatedOverride = false;
+
+ const ExpressionEvaluationContextRecord ¤tEvaluationContext() const {
assert(!ExprEvalContexts.empty() &&
"Must be in an expression evaluation context");
- return ExprEvalContexts.back().isUnevaluated();
- }
+ return ExprEvalContexts.back();
+ };
bool isConstantEvaluatedContext() const {
- assert(!ExprEvalContexts.empty() &&
- "Must be in an expression evaluation context");
- return ExprEvalContexts.back().isConstantEvaluated();
+ return currentEvaluationContext().isConstantEvaluated() ||
+ isConstantEvaluatedOverride;
+ }
+
+ bool isAlwaysConstantEvaluatedContext() const {
+ const ExpressionEvaluationContextRecord &Ctx = currentEvaluationContext();
+ return (Ctx.isConstantEvaluated() || isConstantEvaluatedOverride) &&
+ !Ctx.InConditionallyConstantEvaluateContext;
+ }
+
+ /// Determines whether we are currently in a context that
+ /// is not evaluated as per C++ [expr] p5.
+ bool isUnevaluatedContext() const {
+ return currentEvaluationContext().isUnevaluated();
}
bool isImmediateFunctionContext() const {
- assert(!ExprEvalContexts.empty() &&
- "Must be in an expression evaluation context");
- return ExprEvalContexts.back().isImmediateFunctionContext();
+ return currentEvaluationContext().isImmediateFunctionContext();
}
bool isCheckingDefaultArgumentOrInitializer() const {
- assert(!ExprEvalContexts.empty() &&
- "Must be in an expression evaluation context");
- const ExpressionEvaluationContextRecord &Ctx = ExprEvalContexts.back();
+ const ExpressionEvaluationContextRecord &Ctx = currentEvaluationContext();
return (Ctx.Context ==
ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed) ||
Ctx.IsCurrentlyCheckingDefaultArgumentOrInitializer;
diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp
index 3cad57e719aad97..93515940d15df08 100644
--- a/clang/lib/Parse/ParseDecl.cpp
+++ b/clang/lib/Parse/ParseDecl.cpp
@@ -7703,7 +7703,7 @@ void Parser::ParseBracketDeclarator(Declarator &D) {
// Parse the constant-expression or assignment-expression now (depending
// on dialect).
if (getLangOpts().CPlusPlus) {
- NumElements = ParseConstantExpression();
+ NumElements = ParseArrayBoundExpression();
} else {
EnterExpressionEvaluationContext Unevaluated(
Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
diff --git a/clang/lib/Parse/ParseExpr.cpp b/clang/lib/Parse/ParseExpr.cpp
index 711990bff2851e1..9dbfc1c8c5e9ffe 100644
--- a/clang/lib/Parse/ParseExpr.cpp
+++ b/clang/lib/Parse/ParseExpr.cpp
@@ -221,6 +221,15 @@ ExprResult Parser::ParseConstantExpression() {
return ParseConstantExpressionInExprEvalContext(NotTypeCast);
}
+ExprResult Parser::ParseArrayBoundExpression() {
+ EnterExpressionEvaluationContext ConstantEvaluated(
+ Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
+ // If we parse the bound of a VLA... we parse a non-constant
+ // constant-expression!
+ Actions.ExprEvalContexts.back().InConditionallyConstantEvaluateContext = true;
+ return ParseConstantExpressionInExprEvalContext(NotTypeCast);
+}
+
ExprResult Parser::ParseCaseExpression(SourceLocation CaseLoc) {
EnterExpressionEvaluationContext ConstantEvaluated(
Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
diff --git a/clang/lib/Sema/Sema.cpp b/clang/lib/Sema/Sema.cpp
index 4489cb0deae4c84..db81fa645a27ffd 100644
--- a/clang/lib/Sema/Sema.cpp
+++ b/clang/lib/Sema/Sema.cpp
@@ -221,7 +221,6 @@ Sema::Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer,
CurScope(nullptr), Ident_super(nullptr) {
assert(pp.TUKind == TUKind);
TUScope = nullptr;
- isConstantEvaluatedOverride = false;
LoadedExternalKnownNamespaces = false;
for (unsigned I = 0; I != NSAPI::NumNSNumberLiteralMethods; ++I)
diff --git a/clang/lib/Sema/SemaCUDA.cpp b/clang/lib/Sema/SemaCUDA.cpp
index 3336dbf474df019..7c4083e4ec4d4bb 100644
--- a/clang/lib/Sema/SemaCUDA.cpp
+++ b/clang/lib/Sema/SemaCUDA.cpp
@@ -812,7 +812,7 @@ bool Sema::CheckCUDACall(SourceLocation Loc, FunctionDecl *Callee) {
assert(getLangOpts().CUDA && "Should only be called during CUDA compilation");
assert(Callee && "Callee may not be null.");
- auto &ExprEvalCtx = ExprEvalContexts.back();
+ const auto &ExprEvalCtx = currentEvaluationContext();
if (ExprEvalCtx.isUnevaluated() || ExprEvalCtx.isConstantEvaluated())
return true;
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 3b0cc154c2e46ab..995accfaaeb24e5 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -1076,7 +1076,7 @@ static bool ProcessFormatStringLiteral(const Expr *FormatExpr,
void Sema::checkFortifiedBuiltinMemoryFunction(FunctionDecl *FD,
CallExpr *TheCall) {
if (TheCall->isValueDependent() || TheCall->isTypeDependent() ||
- isConstantEvaluated())
+ isConstantEvaluatedContext())
return;
bool UseDABAttr = false;
@@ -3192,7 +3192,7 @@ bool Sema::CheckCDEBuiltinFunctionCall(const TargetInfo &TI, unsigned BuiltinID,
bool Sema::CheckARMCoprocessorImmediate(const TargetInfo &TI,
const Expr *CoprocArg, bool WantCDE) {
- if (isConstantEvaluated())
+ if (isConstantEvaluatedContext())
return false;
// We can't check the value of a dependent argument.
@@ -6616,7 +6616,7 @@ static void CheckNonNullArguments(Sema &S,
assert((FDecl || Proto) && "Need a function declaration or prototype");
// Already checked by constant evaluator.
- if (S.isConstantEvaluated())
+ if (S.isConstantEvaluatedContext())
return;
// Check the attributes attached to the method/function itself.
llvm::SmallBitVector NonNullArgs;
@@ -8980,7 +8980,7 @@ bool Sema::SemaBuiltinConstantArg(CallExpr *TheCall, int ArgNum,
/// TheCall is a constant expression in the range [Low, High].
bool Sema::SemaBuiltinConstantArgRange(CallExpr *TheCall, int ArgNum,
int Low, int High, bool RangeIsError) {
- if (isConstantEvaluated())
+ if (isConstantEvaluatedContext())
return false;
llvm::APSInt Result;
@@ -9694,7 +9694,7 @@ checkFormatStringExpr(Sema &S, const Expr *E, ArrayRef<const Expr *> Args,
llvm::SmallBitVector &CheckedVarArgs,
UncoveredArgHandler &UncoveredArg, llvm::APSInt Offset,
bool IgnoreStringsWithoutSpecifiers = false) {
- if (S.isConstantEvaluated())
+ if (S.isConstantEvaluatedContext())
return SLCT_NotALiteral;
tryAgain:
assert(Offset.isSigned() && "invalid offset");
@@ -9734,8 +9734,8 @@ checkFormatStringExpr(Sema &S, const Expr *E, ArrayRef<const Expr *> Args,
bool CheckLeft = true, CheckRight = true;
bool Cond;
- if (C->getCond()->EvaluateAsBooleanCondition(Cond, S.getASTContext(),
- S.isConstantEvaluated())) {
+ if (C->getCond()->EvaluateAsBooleanCondition(
+ Cond, S.getASTContext(), S.isConstantEvaluatedContext())) {
if (Cond)
CheckRight = false;
else
@@ -9999,9 +9999,11 @@ checkFormatStringExpr(Sema &S, const Expr *E, ArrayRef<const Expr *> Args,
Expr::EvalResult LResult, RResult;
bool LIsInt = BinOp->getLHS()->EvaluateAsInt(
- LResult, S.Context, Expr::SE_NoSideEffects, S.isConstantEvaluated());
+ LResult, S.Context, Expr::SE_NoSideEffects,
+ S.isConstantEvaluatedContext());
bool RIsInt = BinOp->getRHS()->EvaluateAsInt(
- RResult, S.Context, Expr::SE_NoSideEffects, S.isConstantEvaluated());
+ RResult, S.Context, Expr::SE_NoSideEffects,
+ S.isConstantEvaluatedContext());
if (LIsInt != RIsInt) {
BinaryOperatorKind BinOpKind = BinOp->getOpcode();
@@ -10029,7 +10031,7 @@ checkFormatStringExpr(Sema &S, const Expr *E, ArrayRef<const Expr *> Args,
Expr::EvalResult IndexResult;
if (ASE->getRHS()->EvaluateAsInt(IndexResult, S.Context,
Expr::SE_NoSideEffects,
- S.isConstantEvaluated())) {
+ S.isConstantEvaluatedContext())) {
sumOffsets(Offset, IndexResult.Val.getInt(), BO_Add,
/*RHS is int*/ true);
E = ASE->getBase();
@@ -13959,7 +13961,7 @@ static bool CheckTautologicalComparison(Sema &S, BinaryOperator *E,
return false;
IntRange OtherValueRange = GetExprRange(
- S.Context, Other, S.isConstantEvaluated(), /*Approximate*/ false);
+ S.Context, Other, S.isConstantEvaluatedContext(), /*Approximate=*/false);
QualType OtherT = Other->getType();
if (const auto *AT = OtherT->getAs<AtomicType>())
@@ -14174,8 +14176,9 @@ static void AnalyzeComparison(Sema &S, BinaryOperator *E) {
}
// Otherwise, calculate the effective range of the signed operand.
- IntRange signedRange = GetExprRange(
- S.Context, signedOperand, S.isConstantEvaluated(), /*Approximate*/ true);
+ IntRange signedRange =
+ GetExprRange(S.Context, signedOperand, S.isConstantEvaluatedContext(),
+ /*Approximate=*/true);
// Go ahead and analyze implicit conversions in the operands. Note
// that we skip the implicit conversions on both sides.
@@ -14193,8 +14196,8 @@ static void AnalyzeComparison(Sema &S, BinaryOperator *E) {
if (E->isEqualityOp()) {
unsigned comparisonWidth = S.Context.getIntWidth(T);
IntRange unsignedRange =
- GetExprRange(S.Context, unsignedOperand, S.isConstantEvaluated(),
- /*Approximate*/ true);
+ GetExprRange(S.Context, unsignedOperand, S.isConstantEvaluatedContext(),
+ /*Approximate=*/true);
// We should never be unable to prove that the unsigned operand is
// non-negative.
@@ -15057,7 +15060,7 @@ static void CheckImplicitConversion(Sema &S, Expr *E, QualType T,
if (Target->isUnsaturatedFixedPointType()) {
Expr::EvalResult Result;
if (E->EvaluateAsFixedPoint(Result, S.Context, Expr::SE_AllowSideEffects,
- S.isConstantEvaluated())) {
+ S.isConstantEvaluatedContext())) {
llvm::APFixedPoint Value = Result.Val.getFixedPoint();
llvm::APFixedPoint MaxVal = S.Context.getFixedPointMax(T);
llvm::APFixedPoint MinVal = S.Context.getFixedPointMin(T);
@@ -15072,7 +15075,7 @@ static void CheckImplicitConversion(Sema &S, Expr *E, QualType T,
}
} else if (Target->isIntegerType()) {
Expr::EvalResult Result;
- if (!S.isConstantEvaluated() &&
+ if (!S.isConstantEvaluatedContext() &&
E->EvaluateAsFixedPoint(Result, S.Context,
Expr::SE_AllowSideEffects)) {
llvm::APFixedPoint FXResult = Result.Val.getFixedPoint();
@@ -15095,7 +15098,7 @@ static void CheckImplicitConversion(Sema &S, Expr *E, QualType T,
} else if (Target->isUnsaturatedFixedPointType()) {
if (Source->isIntegerType()) {
Expr::EvalResult Result;
- if (!S.isConstantEvaluated() &&
+ if (!S.isConstantEvaluatedContext() &&
E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects)) {
llvm::APSInt Value = Result.Val.getInt();
@@ -15121,8 +15124,9 @@ static void CheckImplicitConversion(Sema &S, Expr *E, QualType T,
if (SourceBT && TargetBT && SourceBT->isIntegerType() &&
TargetBT->isFloatingType() && !IsListInit) {
// Determine the number of precision bits in the source integer type.
- IntRange SourceRange = GetExprRange(S.Context, E, S.isConstantEvaluated(),
- /*Approximate*/ true);
+ IntRange SourceRange =
+ GetExprRange(S.Context, E, S.isConstantEvaluatedContext(),
+ /*Approximate=*/true);
unsigned int SourcePrecision = SourceRange.Width;
// Determine the number of precision bits in the
@@ -15190,8 +15194,8 @@ static void CheckImplicitConversion(Sema &S, Expr *E, QualType T,
IntRange SourceTypeRange =
IntRange::forTargetOfCanonicalType(S.Context, Source);
- IntRange LikelySourceRange =
- GetExprRange(S.Context, E, S.isConstantEvaluated(), /*Approximate*/ true);
+ IntRange LikelySourceRange = GetExprRange(
+ S.Context, E, S.isConstantEvaluatedContext(), /*Approximate=*/true);
IntRange TargetRange = IntRange::forTargetOfCanonicalType(S.Context, Target);
if (LikelySourceRange.Width > TargetRange.Width) {
@@ -15199,7 +15203,7 @@ static void CheckImplicitConversion(Sema &S, Expr *E, QualType T,
// TODO: this should happen for bitfield stores, too.
Expr::EvalResult Result;
if (E->EvaluateAsInt(Result, S.Context, Expr::SE_AllowSideEffects,
- S.isConstantEvaluated())) {
+ S.isConstantEvaluatedContext())) {
llvm::APSInt Value(32);
Value = Result.Val.getInt();
@@ -16063,7 +16067,8 @@ class SequenceChecker : public ConstEvaluatedExprVisitor<SequenceChecker> {
if (!EvalOK || E->isValueDependent())
return false;
EvalOK = E->EvaluateAsBooleanCondition(
- Result, Self.SemaRef.Context, Self.SemaRef.isConstantEvaluated());
+ Result, Self.SemaRef.Context,
+ Self.SemaRef.isConstantEvaluatedContext());
return EvalOK;
}
@@ -17190,7 +17195,7 @@ void Sema::CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr,
const ArraySubscriptExpr *ASE,
bool AllowOnePastEnd, bool IndexNegated) {
// Already diagnosed by the constant evaluator.
- if (isConstantEvaluated())
+ if (isConstantEvaluatedContext())
return;
IndexExpr = IndexExpr->IgnoreParenImpCasts();
@@ -18579,7 +18584,7 @@ void Sema::CheckArgumentWithTypeTag(const ArgumentWithTypeTagAttr *Attr,
TypeTagData TypeInfo;
if (!GetMatchingCType(ArgumentKind, TypeTagExpr, Context,
TypeTagForDatatypeMagicValues.get(), FoundWrongKind,
- TypeInfo, isConstantEvaluated())) {
+ TypeInfo, isConstantEvaluatedContext())) {
if (FoundWrongKind)
Diag(TypeTagExpr->getExprLoc(),
diag::warn_type_tag_for_datatype_wrong_kind)
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index 304aa7d105e269b..9c5f96eebd04165 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -18312,7 +18312,7 @@ void Sema::MarkExpressionAsImmediateEscalating(Expr *E) {
ExprResult Sema::CheckForImmediateInvocation(ExprResult E, FunctionDecl *Decl) {
if (isUnevaluatedContext() || !E.isUsable() || !Decl ||
- !Decl->isImmediateFunction() || isConstantEvaluated() ||
+ !Decl->isImmediateFunction() || isAlwaysConstantEvaluatedContext() ||
isCheckingDefaultArgumentOrInitializer() ||
RebuildingImmediateInvocation || isImmediateFunctionContext())
return E;
@@ -20736,7 +20736,7 @@ void Sema::MarkDeclRefReferenced(DeclRefExpr *E, const Expr *Base) {
OdrUse = false;
if (auto *FD = dyn_cast<FunctionDecl>(E->getDecl())) {
- if (!isUnevaluatedContext() && !isConstantEvaluated() &&
+ if (!isUnevaluatedContext() && !isConstantEvaluatedContext() &&
!isImmediateFunctionContext() &&
!isCheckingDefaultArgumentOrInitializer() &&
FD->isImmediateFunction() && !RebuildingImmediateInvocation &&
diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h
index 0fc5ad8e3bde6c6..bcaad0950fa923b 100644
--- a/clang/lib/Sema/TreeTransform.h
+++ b/clang/lib/Sema/TreeTransform.h
@@ -5490,6 +5490,9 @@ TreeTransform<Derived>::TransformDependentSizedArrayType(TypeLocBuilder &TLB,
EnterExpressionEvaluationContext Unevaluated(
SemaRef, Sema::ExpressionEvaluationContext::ConstantEvaluated);
+ // If we have a VLA then it won't be a constant.
+ SemaRef.ExprEvalContexts.back().InConditionallyConstantEvaluateContext = true;
+
// Prefer the expression from the TypeLoc; the other may have been uniqued.
Expr *origSize = TL.getSizeExpr();
if (!origSize) origSize = T->getSizeExpr();
diff --git a/clang/test/SemaCXX/cxx2a-consteval.cpp b/clang/test/SemaCXX/cxx2a-consteval.cpp
index a091fadfa3094bd..38cc4be32a27c20 100644
--- a/clang/test/SemaCXX/cxx2a-consteval.cpp
+++ b/clang/test/SemaCXX/cxx2a-consteval.cpp
@@ -8,7 +8,7 @@ consteval int f1(int i) {
return i;
}
-consteval constexpr int f2(int i) {
+consteval constexpr int f2(int i) {
//expected-error at -1 {{cannot combine}}
return i;
}
@@ -195,7 +195,7 @@ auto ptr = ret1(0);
struct A {
consteval int f(int) {
// expected-note at -1+ {{declared here}}
- return 0;
+ return 0;
}
};
@@ -239,7 +239,7 @@ constexpr int f_c(int i) {
int t = f(i);
// expected-error at -1 {{is not a constant expression}}
// expected-note at -2 {{function parameter}}
- return f(0);
+ return f(0);
}
consteval int f_eval(int i) {
@@ -675,7 +675,7 @@ Bar<derp> a; // expected-note {{in instantiation of member function 'issue_55601
struct constantDerp {
// Can be used in a constant expression.
- consteval constantDerp(int) {}
+ consteval constantDerp(int) {}
consteval operator int() const { return 5; }
};
Bar<constantDerp> b;
@@ -1175,4 +1175,28 @@ struct T {
static constexpr auto xx = ns::foo(A{}); // expected-error {{cannot take address of consteval function 'foo' outside of an immediate invocation}}
};
+}
+
+namespace GH65520 {
+
+consteval int bar (int i) { if (i != 1) return 1/0; return 0; }
+// expected-note at -1{{division by zero}}
+
+void
+g ()
+{
+ int a_ok[bar(1)];
+ int a_err[bar(3)]; // expected-error {{call to consteval function 'GH65520::bar' is not a constant expression}} \
+ // expected-note {{in call to 'bar(3)'}}
+}
+
+consteval int undefined(); // expected-note {{declared here}}
+
+consteval void immediate() {
+ int a [undefined()]; // expected-note {{undefined function 'undefined' cannot be used in a constant expression}} \
+ // expected-error {{call to consteval function 'GH65520::undefined' is not a constant expression}} \
+ // expected-error {{variable of non-literal type 'int[undefined()]' cannot be defined in a constexpr function before C++23}}
+}
+
+
}
diff --git a/clang/unittests/Support/TimeProfilerTest.cpp b/clang/unittests/Support/TimeProfilerTest.cpp
index fdfbbfe4e3a9dff..a7ca2bf91e474ef 100644
--- a/clang/unittests/Support/TimeProfilerTest.cpp
+++ b/clang/unittests/Support/TimeProfilerTest.cpp
@@ -190,6 +190,7 @@ Frontend
| EvaluateAsInitializer (slow_value)
| EvaluateAsConstantExpr (<test.cc:17:33, col:59>)
| EvaluateAsConstantExpr (<test.cc:18:11, col:37>)
+| EvaluateAsConstantExpr (<test.cc:23:31, col:57>)
| EvaluateAsRValue (<test.cc:22:14, line:23:58>)
| EvaluateAsInitializer (slow_init_list)
| PerformPendingInstantiations
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