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llvm-project/clang/test/Analysis/temp-obj-dtors-cfg-output.cpp
Zhongxing Xu fee455fcf5 Revert r118991. 
Elidable CXXConstructExpr should inhibit calling destructor for temporary 
that is copied, not the one created. This is because eliding copy constructor 
means that the object that was to be copied will be constructed directly in 
memory the copy would be constructed in.

llvm-svn: 119044
2010-11-14 15:23:50 +00:00

566 lines
16 KiB
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// RUN: %clang_cc1 -analyze -cfg-dump -cfg-add-implicit-dtors -cfg-add-initializers %s 2>&1 | FileCheck %s
// XPASS: *
class A {
public:
A() {}
~A() {}
static A make() { return A(); }
operator bool() { return false; }
operator int() { return 0; }
};
class B {
public:
B() {}
~B() {}
operator bool() { return true; }
operator int() { return 1; }
operator A() { return A(); }
};
void foo(int);
void foo(bool);
void foo(const A&);
void test_binary() {
int a = int(A()) + int(B());
foo(int(A()) + int(B()));
int b;
}
void test_and() {
bool a = A() && B();
foo(A() && B());
int b;
}
void test_or() {
bool a = A() || B();
foo(A() || B());
int b;
}
void test_cond() {
A a = B() ? A() : A(B());
if (B()) { foo(0); } else { foo(0); }
int b;
}
void test_cond_cref() {
const A& a = B() ? A() : A(B());
foo(B() ? A() : A(B()));
int b;
}
void test_cond_implicit() {
A a = A() ?: A();
int b;
}
void test_cond_implicit_cref() {
const A& a = A() ?: A();
foo(A() ?: A());
int b;
}
void test_copy_init() {
A a = A();
int b;
}
void test_cref_init() {
const A& a = A();
foo(A());
int b;
}
void test_call_copy_init() {
A a = A::make();
int b;
}
void test_call_cref_init() {
const A& a = A::make();
foo(A::make());
int b;
}
void test_assign() {
int a;
a = A();
int b;
}
class TestCtorInits {
int a;
int b;
public:
TestCtorInits();
};
TestCtorInits::TestCtorInits()
: a(int(A()) + int(B()))
, b() {}
// CHECK: [ B2 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B1
// CHECK: [ B1 ]
// CHECK: 1: A()
// CHECK: 2: [B1.1].operator int()
// CHECK: 3: B()
// CHECK: 4: [B1.3].operator int()
// CHECK: 5: int a = int(A().operator int()) + int(B().operator int());
// CHECK: 6: ~B() (Temporary object destructor)
// CHECK: 7: ~A() (Temporary object destructor)
// CHECK: 8: A()
// CHECK: 9: [B1.8].operator int()
// CHECK: 10: B()
// CHECK: 11: [B1.10].operator int()
// CHECK: 12: foo(int([B1.9]) + int([B1.11]))
// CHECK: 13: ~B() (Temporary object destructor)
// CHECK: 14: ~A() (Temporary object destructor)
// CHECK: 15: int b;
// CHECK: Predecessors (1): B2
// CHECK: Successors (1): B0
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
// CHECK: [ B10 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B8
// CHECK: [ B1 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: int b;
// CHECK: Predecessors (2): B2 B3
// CHECK: Successors (1): B0
// CHECK: [ B2 ]
// CHECK: 1: ~B() (Temporary object destructor)
// CHECK: Predecessors (1): B3
// CHECK: Successors (1): B1
// CHECK: [ B3 ]
// CHECK: 1: [B4.3] && [B5.2]
// CHECK: 2: foo([B3.1])
// CHECK: T: [B4.3] && ...
// CHECK: Predecessors (2): B5 B4
// CHECK: Successors (2): B2 B1
// CHECK: [ B4 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: A()
// CHECK: 3: [B4.2].operator _Bool()
// CHECK: T: [B4.3] && ...
// CHECK: Predecessors (2): B6 B7
// CHECK: Successors (2): B5 B3
// CHECK: [ B5 ]
// CHECK: 1: B()
// CHECK: 2: [B5.1].operator _Bool()
// CHECK: Predecessors (1): B4
// CHECK: Successors (1): B3
// CHECK: [ B6 ]
// CHECK: 1: ~B() (Temporary object destructor)
// CHECK: Predecessors (1): B7
// CHECK: Successors (1): B4
// CHECK: [ B7 ]
// CHECK: 1: [B8.2] && [B9.2]
// CHECK: 2: bool a = A().operator _Bool() && B().operator _Bool();
// CHECK: T: [B8.2] && ...
// CHECK: Predecessors (2): B9 B8
// CHECK: Successors (2): B6 B4
// CHECK: [ B8 ]
// CHECK: 1: A()
// CHECK: 2: [B8.1].operator _Bool()
// CHECK: T: [B8.2] && ...
// CHECK: Predecessors (1): B10
// CHECK: Successors (2): B9 B7
// CHECK: [ B9 ]
// CHECK: 1: B()
// CHECK: 2: [B9.1].operator _Bool()
// CHECK: Predecessors (1): B8
// CHECK: Successors (1): B7
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
// CHECK: [ B10 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B8
// CHECK: [ B1 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: int b;
// CHECK: Predecessors (2): B2 B3
// CHECK: Successors (1): B0
// CHECK: [ B2 ]
// CHECK: 1: ~B() (Temporary object destructor)
// CHECK: Predecessors (1): B3
// CHECK: Successors (1): B1
// CHECK: [ B3 ]
// CHECK: 1: [B4.3] || [B5.2]
// CHECK: 2: foo([B3.1])
// CHECK: T: [B4.3] || ...
// CHECK: Predecessors (2): B5 B4
// CHECK: Successors (2): B1 B2
// CHECK: [ B4 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: A()
// CHECK: 3: [B4.2].operator _Bool()
// CHECK: T: [B4.3] || ...
// CHECK: Predecessors (2): B6 B7
// CHECK: Successors (2): B3 B5
// CHECK: [ B5 ]
// CHECK: 1: B()
// CHECK: 2: [B5.1].operator _Bool()
// CHECK: Predecessors (1): B4
// CHECK: Successors (1): B3
// CHECK: [ B6 ]
// CHECK: 1: ~B() (Temporary object destructor)
// CHECK: Predecessors (1): B7
// CHECK: Successors (1): B4
// CHECK: [ B7 ]
// CHECK: 1: [B8.2] || [B9.2]
// CHECK: 2: bool a = A().operator _Bool() || B().operator _Bool();
// CHECK: T: [B8.2] || ...
// CHECK: Predecessors (2): B9 B8
// CHECK: Successors (2): B4 B6
// CHECK: [ B8 ]
// CHECK: 1: A()
// CHECK: 2: [B8.1].operator _Bool()
// CHECK: T: [B8.2] || ...
// CHECK: Predecessors (1): B10
// CHECK: Successors (2): B7 B9
// CHECK: [ B9 ]
// CHECK: 1: B()
// CHECK: 2: [B9.1].operator _Bool()
// CHECK: Predecessors (1): B8
// CHECK: Successors (1): B7
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
// CHECK: [ B11 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B10
// CHECK: [ B1 ]
// CHECK: 1: int b;
// CHECK: 2: [B7.2].~A() (Implicit destructor)
// CHECK: Predecessors (2): B2 B3
// CHECK: Successors (1): B0
// CHECK: [ B2 ]
// CHECK: 1: foo(0)
// CHECK: Predecessors (1): B4
// CHECK: Successors (1): B1
// CHECK: [ B3 ]
// CHECK: 1: foo(0)
// CHECK: Predecessors (1): B4
// CHECK: Successors (1): B1
// CHECK: [ B4 ]
// CHECK: 1: ~B() (Temporary object destructor)
// CHECK: 2: B()
// CHECK: 3: [B4.2].operator _Bool()
// CHECK: 4: ~B() (Temporary object destructor)
// CHECK: T: if [B4.3]
// CHECK: Predecessors (2): B5 B6
// CHECK: Successors (2): B3 B2
// CHECK: [ B5 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: ~A() (Temporary object destructor)
// CHECK: Predecessors (1): B7
// CHECK: Successors (1): B4
// CHECK: [ B6 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: ~A() (Temporary object destructor)
// CHECK: 3: ~A() (Temporary object destructor)
// CHECK: 4: ~B() (Temporary object destructor)
// CHECK: Predecessors (1): B7
// CHECK: Successors (1): B4
// CHECK: [ B7 ]
// CHECK: 1: [B10.2] ? [B8.2] : [B9.3]
// CHECK: 2: A a = B().operator _Bool() ? A() : A(B().operator A());
// CHECK: T: [B10.2] ? ... : ...
// CHECK: Predecessors (2): B8 B9
// CHECK: Successors (2): B5 B6
// CHECK: [ B8 ]
// CHECK: 1: A()
// CHECK: 2: [B8.1] (BindTemporary)
// CHECK: Predecessors (1): B10
// CHECK: Successors (1): B7
// CHECK: [ B9 ]
// CHECK: 1: B()
// CHECK: 2: [B9.1].operator A()
// CHECK: 3: A([B9.2]) (BindTemporary)
// CHECK: Predecessors (1): B10
// CHECK: Successors (1): B7
// CHECK: [ B10 ]
// CHECK: 1: B()
// CHECK: 2: [B10.1].operator _Bool()
// CHECK: T: [B10.2] ? ... : ...
// CHECK: Predecessors (1): B11
// CHECK: Successors (2): B8 B9
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
// CHECK: [ B14 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B13
// CHECK: [ B1 ]
// CHECK: 1: ~B() (Temporary object destructor)
// CHECK: 2: int b;
// CHECK: 3: [B10.2].~A() (Implicit destructor)
// CHECK: Predecessors (2): B2 B3
// CHECK: Successors (1): B0
// CHECK: [ B2 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: ~A() (Temporary object destructor)
// CHECK: Predecessors (1): B4
// CHECK: Successors (1): B1
// CHECK: [ B3 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: ~A() (Temporary object destructor)
// CHECK: 3: ~A() (Temporary object destructor)
// CHECK: 4: ~B() (Temporary object destructor)
// CHECK: Predecessors (1): B4
// CHECK: Successors (1): B1
// CHECK: [ B4 ]
// CHECK: 1: [B7.3] ? [B5.2] : [B6.3]
// CHECK: 2: foo([B4.1])
// CHECK: T: [B7.3] ? ... : ...
// CHECK: Predecessors (2): B5 B6
// CHECK: Successors (2): B2 B3
// CHECK: [ B5 ]
// CHECK: 1: A()
// CHECK: 2: [B5.1] (BindTemporary)
// CHECK: Predecessors (1): B7
// CHECK: Successors (1): B4
// CHECK: [ B6 ]
// CHECK: 1: B()
// CHECK: 2: [B6.1].operator A()
// CHECK: 3: A([B6.2]) (BindTemporary)
// CHECK: Predecessors (1): B7
// CHECK: Successors (1): B4
// CHECK: [ B7 ]
// CHECK: 1: ~B() (Temporary object destructor)
// CHECK: 2: B()
// CHECK: 3: [B7.2].operator _Bool()
// CHECK: T: [B7.3] ? ... : ...
// CHECK: Predecessors (2): B8 B9
// CHECK: Successors (2): B5 B6
// CHECK: [ B8 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: Predecessors (1): B10
// CHECK: Successors (1): B7
// CHECK: [ B9 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: ~A() (Temporary object destructor)
// CHECK: 3: ~B() (Temporary object destructor)
// CHECK: Predecessors (1): B10
// CHECK: Successors (1): B7
// CHECK: [ B10 ]
// CHECK: 1: [B13.2] ? [B11.2] : [B12.3]
// CHECK: 2: const A &a = B().operator _Bool() ? A() : A(B().operator A());
// CHECK: T: [B13.2] ? ... : ...
// CHECK: Predecessors (2): B11 B12
// CHECK: Successors (2): B8 B9
// CHECK: [ B11 ]
// CHECK: 1: A()
// CHECK: 2: [B11.1] (BindTemporary)
// CHECK: Predecessors (1): B13
// CHECK: Successors (1): B10
// CHECK: [ B12 ]
// CHECK: 1: B()
// CHECK: 2: [B12.1].operator A()
// CHECK: 3: A([B12.2]) (BindTemporary)
// CHECK: Predecessors (1): B13
// CHECK: Successors (1): B10
// CHECK: [ B13 ]
// CHECK: 1: B()
// CHECK: 2: [B13.1].operator _Bool()
// CHECK: T: [B13.2] ? ... : ...
// CHECK: Predecessors (1): B14
// CHECK: Successors (2): B11 B12
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
// CHECK: [ B6 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B5
// CHECK: [ B1 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: int b;
// CHECK: 3: [B3.2].~A() (Implicit destructor)
// CHECK: Predecessors (2): B3 B2
// CHECK: Successors (1): B0
// CHECK: [ B2 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: ~A() (Temporary object destructor)
// CHECK: Predecessors (1): B3
// CHECK: Successors (1): B1
// CHECK: [ B3 ]
// CHECK: 1: [B5.2] ?: [B4.2]
// CHECK: 2: A a = A().operator _Bool() ?: A();
// CHECK: T: [B5.2] ? ... : ...
// CHECK: Predecessors (2): B5 B4
// CHECK: Successors (2): B1 B2
// CHECK: [ B4 ]
// CHECK: 1: A()
// CHECK: 2: [B4.1] (BindTemporary)
// CHECK: Predecessors (1): B5
// CHECK: Successors (1): B3
// CHECK: [ B5 ]
// CHECK: 1: A()
// CHECK: 2: [B5.1].operator _Bool()
// CHECK: T: [B5.2] ? ... : ...
// CHECK: Predecessors (1): B6
// CHECK: Successors (2): B3 B4
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
// CHECK: [ B10 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B9
// CHECK: [ B1 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: int b;
// CHECK: 3: [B7.2].~A() (Implicit destructor)
// CHECK: Predecessors (2): B3 B2
// CHECK: Successors (1): B0
// CHECK: [ B2 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: ~A() (Temporary object destructor)
// CHECK: Predecessors (1): B3
// CHECK: Successors (1): B1
// CHECK: [ B3 ]
// CHECK: 1: [B5.3] ?: [B4.2]
// CHECK: 2: foo([B3.1])
// CHECK: T: [B5.3] ? ... : ...
// CHECK: Predecessors (2): B5 B4
// CHECK: Successors (2): B1 B2
// CHECK: [ B4 ]
// CHECK: 1: A()
// CHECK: 2: [B4.1] (BindTemporary)
// CHECK: Predecessors (1): B5
// CHECK: Successors (1): B3
// CHECK: [ B5 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: 2: A()
// CHECK: 3: [B5.2].operator _Bool()
// CHECK: T: [B5.3] ? ... : ...
// CHECK: Predecessors (2): B7 B6
// CHECK: Successors (2): B3 B4
// CHECK: [ B6 ]
// CHECK: 1: ~A() (Temporary object destructor)
// CHECK: Predecessors (1): B7
// CHECK: Successors (1): B5
// CHECK: [ B7 ]
// CHECK: 1: [B9.2] ?: [B8.2]
// CHECK: 2: const A &a = A().operator _Bool() ?: A();
// CHECK: T: [B9.2] ? ... : ...
// CHECK: Predecessors (2): B9 B8
// CHECK: Successors (2): B5 B6
// CHECK: [ B8 ]
// CHECK: 1: A()
// CHECK: 2: [B8.1] (BindTemporary)
// CHECK: Predecessors (1): B9
// CHECK: Successors (1): B7
// CHECK: [ B9 ]
// CHECK: 1: A()
// CHECK: 2: [B9.1].operator _Bool()
// CHECK: T: [B9.2] ? ... : ...
// CHECK: Predecessors (1): B10
// CHECK: Successors (2): B7 B8
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
// CHECK: [ B2 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B1
// CHECK: [ B1 ]
// CHECK: 1: A()
// CHECK: 2: A a = A();
// CHECK: 3: ~A() (Temporary object destructor)
// CHECK: 4: int b;
// CHECK: 5: [B1.2].~A() (Implicit destructor)
// CHECK: Predecessors (1): B2
// CHECK: Successors (1): B0
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
// CHECK: [ B2 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B1
// CHECK: [ B1 ]
// CHECK: 1: A()
// CHECK: 2: const A &a = A();
// CHECK: 3: A()
// CHECK: 4: foo([B1.3])
// CHECK: 5: ~A() (Temporary object destructor)
// CHECK: 6: int b;
// CHECK: 7: [B1.2].~A() (Implicit destructor)
// CHECK: Predecessors (1): B2
// CHECK: Successors (1): B0
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
// CHECK: [ B2 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B1
// CHECK: [ B1 ]
// CHECK: 1: A::make()
// CHECK: 2: A a = A::make();
// CHECK: 3: ~A() (Temporary object destructor)
// CHECK: 4: int b;
// CHECK: 5: [B1.2].~A() (Implicit destructor)
// CHECK: Predecessors (1): B2
// CHECK: Successors (1): B0
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
// CHECK: [ B2 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B1
// CHECK: [ B1 ]
// CHECK: 1: A::make()
// CHECK: 2: const A &a = A::make();
// CHECK: 3: A::make()
// CHECK: 4: foo([B1.3])
// CHECK: 5: ~A() (Temporary object destructor)
// CHECK: 6: int b;
// CHECK: 7: [B1.2].~A() (Implicit destructor)
// CHECK: Predecessors (1): B2
// CHECK: Successors (1): B0
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
// CHECK: [ B2 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B1
// CHECK: [ B1 ]
// CHECK: 1: int a;
// CHECK: 2: A()
// CHECK: 3: [B1.2].operator int()
// CHECK: 4: a = [B1.3]
// CHECK: 5: ~A() (Temporary object destructor)
// CHECK: 6: int b;
// CHECK: Predecessors (1): B2
// CHECK: Successors (1): B0
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
// CHECK: [ B2 (ENTRY) ]
// CHECK: Predecessors (0):
// CHECK: Successors (1): B1
// CHECK: [ B1 ]
// CHECK: 1: A()
// CHECK: 2: [B1.1].operator int()
// CHECK: 3: B()
// CHECK: 4: [B1.3].operator int()
// CHECK: 5: a(int([B1.2]) + int([B1.4])) (Member initializer)
// CHECK: 6: ~B() (Temporary object destructor)
// CHECK: 7: ~A() (Temporary object destructor)
// CHECK: 8: b(/*implicit*/int()) (Member initializer)
// CHECK: Predecessors (1): B2
// CHECK: Successors (1): B0
// CHECK: [ B0 (EXIT) ]
// CHECK: Predecessors (1): B1
// CHECK: Successors (0):
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