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[alpha.webkit.UncountedCallArgsChecker] Add the support for trivial CXXInheritedCtorInitExpr. #111198

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Oct 10, 2024
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Original file line number Diff line number Diff line change
@@ -508,6 +508,10 @@ class TrivialFunctionAnalysisVisitor
return IsFunctionTrivial(CE->getConstructor());
}

bool VisitCXXInheritedCtorInitExpr(const CXXInheritedCtorInitExpr *E) {
return IsFunctionTrivial(E->getConstructor());
}

bool VisitCXXNewExpr(const CXXNewExpr *NE) { return VisitChildren(NE); }

bool VisitImplicitCastExpr(const ImplicitCastExpr *ICE) {
21 changes: 21 additions & 0 deletions clang/test/Analysis/Checkers/WebKit/uncounted-obj-arg.cpp
Original file line number Diff line number Diff line change
@@ -224,6 +224,20 @@ class ObjectWithMutatingDestructor {
Number n;
};

class BaseType {
public:
BaseType() : n(0) { }
BaseType(int v) : n(v) { }
BaseType(const char*);
private:
Number n;
};

class SomeType : public BaseType {
public:
using BaseType::BaseType;
};

class RefCounted {
public:
void ref() const;
@@ -336,6 +350,8 @@ class RefCounted {
unsigned trivial60() { return ObjectWithNonTrivialDestructor { 5 }.value(); }
unsigned trivial61() { return DerivedNumber('7').value(); }
void trivial62() { WTFReportBacktrace(); }
SomeType trivial63() { return SomeType(0); }
SomeType trivial64() { return SomeType(); }

static RefCounted& singleton() {
static RefCounted s_RefCounted;
@@ -425,6 +441,7 @@ class RefCounted {
unsigned nonTrivial21() { return Number("123").value(); }
unsigned nonTrivial22() { return ComplexNumber(123, "456").real().value(); }
unsigned nonTrivial23() { return DerivedNumber("123").value(); }
SomeType nonTrivial24() { return SomeType("123"); }

static unsigned s_v;
unsigned v { 0 };
@@ -515,6 +532,8 @@ class UnrelatedClass {
getFieldTrivial().trivial60(); // no-warning
getFieldTrivial().trivial61(); // no-warning
getFieldTrivial().trivial62(); // no-warning
getFieldTrivial().trivial63(); // no-warning
getFieldTrivial().trivial64(); // no-warning

RefCounted::singleton().trivial18(); // no-warning
RefCounted::singleton().someFunction(); // no-warning
@@ -587,6 +606,8 @@ class UnrelatedClass {
// expected-warning@-1{{Call argument for 'this' parameter is uncounted and unsafe}}
getFieldTrivial().nonTrivial23();
// expected-warning@-1{{Call argument for 'this' parameter is uncounted and unsafe}}
getFieldTrivial().nonTrivial24();
// expected-warning@-1{{Call argument for 'this' parameter is uncounted and unsafe}}
}
};

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