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[clang-tidy][NFC] Enable readability-avoid-return-with-void-value check in the codebase #151356

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Merged
vbvictor merged 3 commits into from
Aug 1, 2025
Merged

[clang-tidy][NFC] Enable readability-avoid-return-with-void-value check in the codebase #151356

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[clang-tidy][NFC] Enable `readability-avoid-return-with-void-value` c…
localspook Jul 30, 2025
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Address feedback
localspook Jul 31, 2025
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Fix build
localspook Jul 31, 2025
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1 change: 0 additions & 1 deletion clang-tools-extra/clang-tidy/.clang-tidy
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,6 @@ Checks: >
-performance-unnecessary-value-param,
readability-*,
-readability-avoid-nested-conditional-operator,
-readability-avoid-return-with-void-value,
-readability-braces-around-statements,
-readability-container-contains,
-readability-convert-member-functions-to-static,
Expand Down
74 changes: 42 additions & 32 deletions clang-tools-extra/clang-tidy/bugprone/NarrowingConversionsCheck.cpp
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Expand Up @@ -381,10 +381,11 @@ void NarrowingConversionsCheck::diagNarrowTypeOrConstant(
const Expr &Rhs) {
APValue Constant = getConstantExprValue(Context, Rhs);
if (Constant.isInt())
return diagNarrowIntegerConstant(SourceLoc, Lhs, Rhs, Constant.getInt());
if (Constant.isFloat())
return diagNarrowConstant(SourceLoc, Lhs, Rhs);
return diagNarrowType(SourceLoc, Lhs, Rhs);
diagNarrowIntegerConstant(SourceLoc, Lhs, Rhs, Constant.getInt());
else if (Constant.isFloat())
diagNarrowConstant(SourceLoc, Lhs, Rhs);
else
diagNarrowType(SourceLoc, Lhs, Rhs);
}

void NarrowingConversionsCheck::handleIntegralCast(const ASTContext &Context,
Expand Down Expand Up @@ -460,10 +461,10 @@ void NarrowingConversionsCheck::handleFloatingToIntegral(
llvm::APFloat FloatConstant(0.0);
if (getFloatingConstantExprValue(Context, Rhs, FloatConstant)) {
if (!isFloatExactlyRepresentable(Context, FloatConstant, Lhs.getType()))
return diagNarrowConstant(SourceLoc, Lhs, Rhs);
diagNarrowConstant(SourceLoc, Lhs, Rhs);

if (PedanticMode)
return diagConstantCast(SourceLoc, Lhs, Rhs);
else if (PedanticMode)
diagConstantCast(SourceLoc, Lhs, Rhs);

return;
}
Expand All @@ -478,7 +479,7 @@ void NarrowingConversionsCheck::handleFloatingToIntegral(
void NarrowingConversionsCheck::handleFloatingToBoolean(
const ASTContext &Context, SourceLocation SourceLoc, const Expr &Lhs,
const Expr &Rhs) {
return diagNarrowTypeOrConstant(Context, SourceLoc, Lhs, Rhs);
diagNarrowTypeOrConstant(Context, SourceLoc, Lhs, Rhs);
}

void NarrowingConversionsCheck::handleBooleanToSignedIntegral(
Expand Down Expand Up @@ -532,19 +533,20 @@ void NarrowingConversionsCheck::handleBinaryOperator(const ASTContext &Context,
if (LhsType == RhsType)
return;
if (RhsType->getKind() == BuiltinType::Bool && LhsType->isSignedInteger())
return handleBooleanToSignedIntegral(Context, SourceLoc, Lhs, Rhs);
if (RhsType->isInteger() && LhsType->getKind() == BuiltinType::Bool)
return handleIntegralToBoolean(Context, SourceLoc, Lhs, Rhs);
if (RhsType->isInteger() && LhsType->isFloatingPoint())
return handleIntegralToFloating(Context, SourceLoc, Lhs, Rhs);
if (RhsType->isInteger() && LhsType->isInteger())
return handleIntegralCast(Context, SourceLoc, Lhs, Rhs);
if (RhsType->isFloatingPoint() && LhsType->getKind() == BuiltinType::Bool)
return handleFloatingToBoolean(Context, SourceLoc, Lhs, Rhs);
if (RhsType->isFloatingPoint() && LhsType->isInteger())
return handleFloatingToIntegral(Context, SourceLoc, Lhs, Rhs);
if (RhsType->isFloatingPoint() && LhsType->isFloatingPoint())
return handleFloatingCast(Context, SourceLoc, Lhs, Rhs);
handleBooleanToSignedIntegral(Context, SourceLoc, Lhs, Rhs);
else if (RhsType->isInteger() && LhsType->getKind() == BuiltinType::Bool)
handleIntegralToBoolean(Context, SourceLoc, Lhs, Rhs);
else if (RhsType->isInteger() && LhsType->isFloatingPoint())
handleIntegralToFloating(Context, SourceLoc, Lhs, Rhs);
else if (RhsType->isInteger() && LhsType->isInteger())
handleIntegralCast(Context, SourceLoc, Lhs, Rhs);
else if (RhsType->isFloatingPoint() &&
LhsType->getKind() == BuiltinType::Bool)
handleFloatingToBoolean(Context, SourceLoc, Lhs, Rhs);
else if (RhsType->isFloatingPoint() && LhsType->isInteger())
handleFloatingToIntegral(Context, SourceLoc, Lhs, Rhs);
else if (RhsType->isFloatingPoint() && LhsType->isFloatingPoint())
handleFloatingCast(Context, SourceLoc, Lhs, Rhs);
}

bool NarrowingConversionsCheck::handleConditionalOperator(
Expand Down Expand Up @@ -577,19 +579,26 @@ void NarrowingConversionsCheck::handleImplicitCast(
SourceLocation SourceLoc = Lhs.getExprLoc();
switch (Cast.getCastKind()) {
case CK_BooleanToSignedIntegral:
return handleBooleanToSignedIntegral(Context, SourceLoc, Lhs, Rhs);
handleBooleanToSignedIntegral(Context, SourceLoc, Lhs, Rhs);
break;
case CK_IntegralToBoolean:
return handleIntegralToBoolean(Context, SourceLoc, Lhs, Rhs);
handleIntegralToBoolean(Context, SourceLoc, Lhs, Rhs);
break;
case CK_IntegralToFloating:
return handleIntegralToFloating(Context, SourceLoc, Lhs, Rhs);
handleIntegralToFloating(Context, SourceLoc, Lhs, Rhs);
break;
case CK_IntegralCast:
return handleIntegralCast(Context, SourceLoc, Lhs, Rhs);
handleIntegralCast(Context, SourceLoc, Lhs, Rhs);
break;
case CK_FloatingToBoolean:
return handleFloatingToBoolean(Context, SourceLoc, Lhs, Rhs);
handleFloatingToBoolean(Context, SourceLoc, Lhs, Rhs);
break;
case CK_FloatingToIntegral:
return handleFloatingToIntegral(Context, SourceLoc, Lhs, Rhs);
handleFloatingToIntegral(Context, SourceLoc, Lhs, Rhs);
break;
case CK_FloatingCast:
return handleFloatingCast(Context, SourceLoc, Lhs, Rhs);
handleFloatingCast(Context, SourceLoc, Lhs, Rhs);
break;
default:
break;
}
Expand All @@ -610,9 +619,10 @@ void NarrowingConversionsCheck::handleBinaryOperator(const ASTContext &Context,

void NarrowingConversionsCheck::check(const MatchFinder::MatchResult &Result) {
if (const auto *Op = Result.Nodes.getNodeAs<BinaryOperator>("binary_op"))
return handleBinaryOperator(*Result.Context, *Op);
if (const auto *Cast = Result.Nodes.getNodeAs<ImplicitCastExpr>("cast"))
return handleImplicitCast(*Result.Context, *Cast);
llvm_unreachable("must be binary operator or cast expression");
handleBinaryOperator(*Result.Context, *Op);
else if (const auto *Cast = Result.Nodes.getNodeAs<ImplicitCastExpr>("cast"))
handleImplicitCast(*Result.Context, *Cast);
else
llvm_unreachable("must be binary operator or cast expression");
}
} // namespace clang::tidy::bugprone
5 changes: 3 additions & 2 deletions clang-tools-extra/clang-tidy/readability/ImplicitBoolConversionCheck.cpp
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Expand Up @@ -361,14 +361,15 @@ void ImplicitBoolConversionCheck::check(
if (const auto *CastToBool =
Result.Nodes.getNodeAs<ImplicitCastExpr>("implicitCastToBool")) {
const auto *Parent = Result.Nodes.getNodeAs<Stmt>("parentStmt");
return handleCastToBool(CastToBool, Parent, *Result.Context);
handleCastToBool(CastToBool, Parent, *Result.Context);
return;
}

if (const auto *CastFromBool =
Result.Nodes.getNodeAs<ImplicitCastExpr>("implicitCastFromBool")) {
const auto *NextImplicitCast =
Result.Nodes.getNodeAs<ImplicitCastExpr>("furtherImplicitCast");
return handleCastFromBool(CastFromBool, NextImplicitCast, *Result.Context);
handleCastFromBool(CastFromBool, NextImplicitCast, *Result.Context);
}
}

Expand Down