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llvm-project/clang/test/Analysis/initializers-cfg-output.cpp

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// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=debug.DumpCFG -analyzer-config cfg-rich-constructors=false %s 2>&1 | FileCheck -check-prefixes=CHECK,WARNINGS %s
// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=debug.DumpCFG -analyzer-config cfg-rich-constructors=true %s 2>&1 | FileCheck -check-prefixes=CHECK,ANALYZER %s
// This file tests how we construct two different flavors of the Clang CFG -
// the CFG used by the Sema analysis-based warnings and the CFG used by the
// static analyzer. The difference in the behavior is checked via FileCheck
// prefixes (WARNINGS and ANALYZER respectively). When introducing new analyzer
// flags, no new run lines should be added - just these flags would go to the
// respective line depending on where is it turned on and where is it turned
// off. Feel free to add tests that test only one of the CFG flavors if you're
// not sure how the other flavor is supposed to work in your case.
class A {
public:
// CHECK: A()
// CHECK: [B1 (ENTRY)]
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
A() {}
// CHECK: A(int i)
// CHECK: [B1 (ENTRY)]
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
A(int i) {}
};
class B : public virtual A {
public:
// CHECK: B()
// CHECK: [B3 (ENTRY)]
// CHECK-NEXT: Succs (1): B2
// CHECK: [B1]
// WARNINGS-NEXT: 1: (CXXConstructExpr, class A)
// ANALYZER-NEXT: 1: (CXXConstructExpr, A() (Base initializer), class A)
// CHECK-NEXT: 2: A([B1.1]) (Base initializer)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: T: (See if most derived ctor has already initialized vbases)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (2): B0 B1
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (2): B1 B2
B() {}
// CHECK: B(int i)
// CHECK: [B3 (ENTRY)]
// CHECK-NEXT: Succs (1): B2
// CHECK: [B1]
// CHECK-NEXT: 1: i
// CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, LValueToRValue, int)
// WARNINGS-NEXT: 3: [B1.2] (CXXConstructExpr, class A)
// ANALYZER-NEXT: 3: [B1.2] (CXXConstructExpr, A([B1.2]) (Base initializer), class A)
// CHECK-NEXT: 4: A([B1.3]) (Base initializer)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: T: (See if most derived ctor has already initialized vbases)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (2): B0 B1
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (2): B1 B2
B(int i) : A(i) {}
};
class C : public virtual A {
public:
// CHECK: C()
// CHECK: [B3 (ENTRY)]
// CHECK-NEXT: Succs (1): B2
// CHECK: [B1]
// WARNINGS-NEXT: 1: (CXXConstructExpr, class A)
// ANALYZER-NEXT: 1: (CXXConstructExpr, A() (Base initializer), class A)
// CHECK-NEXT: 2: A([B1.1]) (Base initializer)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: T: (See if most derived ctor has already initialized vbases)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (2): B0 B1
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (2): B1 B2
C() {}
// CHECK: C(int i)
// CHECK: [B3 (ENTRY)]
// CHECK-NEXT: Succs (1): B2
// CHECK: [B1]
// CHECK-NEXT: 1: i
// CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, LValueToRValue, int)
// WARNINGS-NEXT: 3: [B1.2] (CXXConstructExpr, class A)
// ANALYZER-NEXT: 3: [B1.2] (CXXConstructExpr, A([B1.2]) (Base initializer), class A)
// CHECK-NEXT: 4: A([B1.3]) (Base initializer)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: T: (See if most derived ctor has already initialized vbases)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (2): B0 B1
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (2): B1 B2
C(int i) : A(i) {}
};
class TestOrder : public C, public B, public A {
int i;
int& r;
public:
TestOrder();
};
// CHECK: TestOrder::TestOrder()
// CHECK: [B4 (ENTRY)]
// CHECK-NEXT: Succs (1): B3
// CHECK: [B1]
// WARNINGS-NEXT: 1: (CXXConstructExpr, class C)
// ANALYZER-NEXT: 1: (CXXConstructExpr, C() (Base initializer), class C)
// CHECK-NEXT: 2: C([B1.1]) (Base initializer)
// WARNINGS-NEXT: 3: (CXXConstructExpr, class B)
// ANALYZER-NEXT: 3: (CXXConstructExpr, B() (Base initializer), class B)
// CHECK-NEXT: 4: B([B1.3]) (Base initializer)
// WARNINGS-NEXT: 5: (CXXConstructExpr, class A)
// ANALYZER-NEXT: 5: (CXXConstructExpr, A() (Base initializer), class A)
// CHECK-NEXT: 6: A([B1.5]) (Base initializer)
// CHECK-NEXT: 7: /*implicit*/(int)0
// CHECK-NEXT: 8: i([B1.7]) (Member initializer)
// CHECK-NEXT: 9: this
// CHECK-NEXT: 10: [B1.9]->i
// CHECK-NEXT: 11: r([B1.10]) (Member initializer)
// WARNINGS-NEXT: 12: (CXXConstructExpr, class A)
// ANALYZER-NEXT: 12: (CXXConstructExpr, [B1.13], class A)
// CHECK-NEXT: 13: A a;
// CHECK-NEXT: Preds (2): B2 B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// WARNINGS-NEXT: 1: (CXXConstructExpr, class A)
// ANALYZER-NEXT: 1: (CXXConstructExpr, A() (Base initializer), class A)
// CHECK-NEXT: 2: A([B2.1]) (Base initializer)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: T: (See if most derived ctor has already initialized vbases)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (2): B1 B2
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
TestOrder::TestOrder()
: r(i), B(), i(), C() {
A a;
}
class TestControlFlow {
int x, y, z;
public:
TestControlFlow(bool b);
};
// CHECK: TestControlFlow::TestControlFlow(bool b)
// CHECK: [B5 (ENTRY)]
// CHECK-NEXT: Succs (1): B4
// CHECK: [B1]
// CHECK-NEXT: 1: [B4.4] ? [B2.1] : [B3.1]
// CHECK-NEXT: 2: y([B1.1]) (Member initializer)
// CHECK-NEXT: 3: this
// CHECK-NEXT: 4: [B1.3]->y
// CHECK-NEXT: 5: [B1.4] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: 6: z([B1.5]) (Member initializer)
// CHECK-NEXT: 7: int v;
// CHECK-NEXT: Preds (2): B2 B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: 0
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: 1: 1
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B4]
// CHECK-NEXT: 1: 0
// CHECK-NEXT: 2: x([B4.1]) (Member initializer)
// CHECK-NEXT: 3: b
// CHECK-NEXT: 4: [B4.3] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: [B4.4] ? ... : ...
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (2): B2 B3
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
TestControlFlow::TestControlFlow(bool b)
: y(b ? 0 : 1)
, x(0)
, z(y) {
int v;
}
class TestDelegating {
int x, z;
public:
// CHECK: TestDelegating()
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: 2
// CHECK-NEXT: 2: 3
// WARNINGS-NEXT: 3: [B1.1], [B1.2] (CXXConstructExpr, class TestDelegating)
// ANALYZER-NEXT: 3: [B1.1], [B1.2] (CXXConstructExpr, TestDelegating([B1.1], [B1.2]) (Delegating initializer), class TestDelegating)
// CHECK-NEXT: 4: TestDelegating([B1.3]) (Delegating initializer)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
TestDelegating() : TestDelegating(2, 3) {}
// CHECK: TestDelegating(int x, int z)
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: x
// CHECK-NEXT: 2: [B1.1] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: 3: x([B1.2]) (Member initializer)
// CHECK-NEXT: 4: z
// CHECK-NEXT: 5: [B1.4] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: 6: z([B1.5]) (Member initializer)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
TestDelegating(int x, int z) : x(x), z(z) {}
};
class TestMoreControlFlow : public virtual A {
A a;
public:
TestMoreControlFlow(bool coin);
};
// CHECK: TestMoreControlFlow::TestMoreControlFlow(bool coin)
// CHECK: [B10 (ENTRY)]
// CHECK-NEXT: Succs (1): B9
// CHECK: [B1]
// CHECK-NEXT: 1: [B4.2] ? [B2.1] : [B3.1]
// WARNINGS-NEXT: 2: [B1.1] (CXXConstructExpr, class A)
// ANALYZER-NEXT: 2: [B1.1] (CXXConstructExpr, a([B1.1]) (Member initializer), class A)
// CHECK-NEXT: 3: a([B1.2]) (Member initializer)
// CHECK-NEXT: Preds (2): B2 B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: 3
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: 1: 4
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B4]
// CHECK-NEXT: 1: coin
// CHECK-NEXT: 2: [B4.1] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: [B4.2] ? ... : ...
// CHECK-NEXT: Preds (2): B5 B9
// CHECK-NEXT: Succs (2): B2 B3
// CHECK: [B5]
// CHECK-NEXT: 1: [B8.2] ? [B6.1] : [B7.1]
// WARNINGS-NEXT: 2: [B5.1] (CXXConstructExpr, class A)
// ANALYZER-NEXT: 2: [B5.1] (CXXConstructExpr, A([B5.1]) (Base initializer), class A)
// CHECK-NEXT: 3: A([B5.2]) (Base initializer)
// CHECK-NEXT: Preds (2): B6 B7
// CHECK-NEXT: Succs (1): B4
// CHECK: [B6]
// CHECK-NEXT: 1: 1
// CHECK-NEXT: Preds (1): B8
// CHECK-NEXT: Succs (1): B5
// CHECK: [B7]
// CHECK-NEXT: 1: 2
// CHECK-NEXT: Preds (1): B8
// CHECK-NEXT: Succs (1): B5
// CHECK: [B8]
// CHECK-NEXT: 1: coin
// CHECK-NEXT: 2: [B8.1] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: [B8.2] ? ... : ...
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (2): B6 B7
// CHECK: [B9]
// CHECK-NEXT: T: (See if most derived ctor has already initialized vbases)
// CHECK-NEXT: Preds (1): B10
// CHECK-NEXT: Succs (2): B4 B8
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
TestMoreControlFlow::TestMoreControlFlow(bool coin)
: A(coin ? 1 : 2), a(coin ? 3 : 4) {}
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