86 lines
4.3 KiB
C++
86 lines
4.3 KiB
C++
// RUN: %check_clang_tidy %s bugprone-compare-pointer-to-member-virtual-function %t
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struct A {
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virtual ~A();
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void f1();
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void f2();
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virtual void f3();
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virtual void f4();
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void g1(int);
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};
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bool Result;
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void base() {
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Result = (&A::f1 == &A::f2);
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Result = (&A::f1 == &A::f3);
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// CHECK-MESSAGES: :[[@LINE-1]]:20: warning: comparing a pointer to member virtual function with other pointer is unspecified behavior, only compare it with a null-pointer constant for equality.
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Result = (&A::f1 != &A::f3);
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// CHECK-MESSAGES: :[[@LINE-1]]:20: warning: comparing a pointer to member virtual function with other pointer is unspecified behavior, only compare it with a null-pointer constant for equality.
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Result = (&A::f3 == nullptr);
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Result = (&A::f3 == &A::f4);
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// CHECK-MESSAGES: :[[@LINE-1]]:20: warning: comparing a pointer to member virtual function with other pointer is unspecified behavior, only compare it with a null-pointer constant for equality.
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void (A::*V1)() = &A::f3;
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Result = (V1 == &A::f1);
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// CHECK-MESSAGES: :[[@LINE-1]]:16: warning: comparing a pointer to member virtual function with other pointer is unspecified behavior, only compare it with a null-pointer constant for equality.
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// CHECK-MESSAGES: :7:3: note: potential member virtual function is declared here.
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// CHECK-MESSAGES: :8:3: note: potential member virtual function is declared here.
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Result = (&A::f1 == V1);
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// CHECK-MESSAGES: :[[@LINE-1]]:20: warning: comparing a pointer to member virtual function with other pointer is unspecified behavior, only compare it with a null-pointer constant for equality.
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// CHECK-MESSAGES: :7:3: note: potential member virtual function is declared here.
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// CHECK-MESSAGES: :8:3: note: potential member virtual function is declared here.
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auto& V2 = V1;
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Result = (&A::f1 == V2);
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// CHECK-MESSAGES: :[[@LINE-1]]:20: warning: comparing a pointer to member virtual function with other pointer is unspecified behavior, only compare it with a null-pointer constant for equality.
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// CHECK-MESSAGES: :7:3: note: potential member virtual function is declared here.
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// CHECK-MESSAGES: :8:3: note: potential member virtual function is declared here.
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void (A::*V3)(int) = &A::g1;
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Result = (V3 == &A::g1);
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Result = (&A::g1 == V3);
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}
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using B = A;
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void usingRecordName() {
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Result = (&B::f1 == &B::f3);
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// CHECK-MESSAGES: :[[@LINE-1]]:20: warning: comparing a pointer to member virtual function with other pointer is unspecified behavior, only compare it with a null-pointer constant for equality.
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void (B::*V1)() = &B::f1;
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Result = (V1 == &B::f1);
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// CHECK-MESSAGES: :[[@LINE-1]]:16: warning: comparing a pointer to member virtual function with other pointer is unspecified behavior, only compare it with a null-pointer constant for equality.
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// CHECK-MESSAGES: :7:3: note: potential member virtual function is declared here.
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// CHECK-MESSAGES: :8:3: note: potential member virtual function is declared here.
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}
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typedef A C;
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void typedefRecordName() {
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Result = (&C::f1 == &C::f3);
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// CHECK-MESSAGES: :[[@LINE-1]]:20: warning: comparing a pointer to member virtual function with other pointer is unspecified behavior, only compare it with a null-pointer constant for equality.
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void (C::*V1)() = &C::f1;
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Result = (V1 == &C::f1);
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// CHECK-MESSAGES: :[[@LINE-1]]:16: warning: comparing a pointer to member virtual function with other pointer is unspecified behavior, only compare it with a null-pointer constant for equality.
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// CHECK-MESSAGES: :7:3: note: potential member virtual function is declared here.
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// CHECK-MESSAGES: :8:3: note: potential member virtual function is declared here.
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}
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struct A1 : public A {
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};
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void inheritClass() {
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Result = (&A1::f1 == &A1::f3);
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// CHECK-MESSAGES: :[[@LINE-1]]:21: warning: comparing a pointer to member virtual function with other pointer is unspecified behavior, only compare it with a null-pointer constant for equality.
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void (A1::*V1)() = &A1::f1;
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Result = (V1 == &A1::f1);
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// CHECK-MESSAGES: :[[@LINE-1]]:16: warning: comparing a pointer to member virtual function with other pointer is unspecified behavior, only compare it with a null-pointer constant for equality.
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// CHECK-MESSAGES: :7:3: note: potential member virtual function is declared here.
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// CHECK-MESSAGES: :8:3: note: potential member virtual function is declared here.
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}
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