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

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CFG: Add CFGElement for automatic variables that leave the scope Summary: This mimics the implementation for the implicit destructors. The generation of this scope leaving elements is hidden behind a flag to the CFGBuilder, thus it should not affect existing code. Currently, I'm missing a test (it's implicitly tested by the clang-tidy lifetime checker that I'm proposing). I though about a test using debug.DumpCFG, but then I would have to add an option to StaticAnalyzer/Core/AnalyzerOptions to enable the scope leaving CFGElement, which would only be useful to that particular test. Any other ideas how I could make a test for this feature? Reviewers: krememek, jordan_rose Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D15031 llvm-svn: 307759
2017-07-12 15:04:19 +08:00
// RUN: %clang_cc1 -fcxx-exceptions -fexceptions -analyze -analyzer-checker=debug.DumpCFG -analyzer-config cfg-lifetime=true -analyzer-config cfg-implicit-dtors=false %s > %t 2>&1
// RUN: FileCheck --input-file=%t %s
extern bool UV;
class A {
public:
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: true
// CHECK-NEXT: 2: UV
// CHECK-NEXT: 3: [B1.2] = [B1.1]
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
A() {
UV = true;
}
// CHECK: [B3 (ENTRY)]
// CHECK-NEXT: Succs (1): B2
// CHECK: [B1]
// CHECK-NEXT: 1: 0
// CHECK-NEXT: 2: this
// CHECK-NEXT: 3: [B1.2]->p
// CHECK-NEXT: 4: [B1.3] (ImplicitCastExpr, LValueToRValue, int *)
// CHECK-NEXT: 5: *[B1.4]
// CHECK-NEXT: 6: [B1.5] = [B1.1]
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: this
// CHECK-NEXT: 2: [B2.1]->p
// CHECK-NEXT: 3: [B2.2] (ImplicitCastExpr, LValueToRValue, int *)
// CHECK-NEXT: 4: [B2.3] (ImplicitCastExpr, PointerToBoolean, _Bool)
// CHECK-NEXT: T: if [B2.4]
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (2): B1 B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (2): B1 B2
~A() {
if (p)
*p = 0;
}
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: 1
// CHECK-NEXT: 2: return [B1.1];
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
operator int() const { return 1; }
int *p;
};
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A a;
// CHECK-NEXT: 3: a
// CHECK-NEXT: 4: [B1.3] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 5: const A &b = a;
// CHECK-NEXT: 6: A() (CXXConstructExpr, class A)
// CHECK-NEXT: 7: [B1.6] (BindTemporary)
// CHECK-NEXT: 8: [B1.7] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 9: [B1.8]
// CHECK-NEXT: 10: const A &c = A();
// CHECK-NEXT: 11: [B1.10] (Lifetime ends)
// CHECK-NEXT: 12: [B1.2] (Lifetime ends)
// CHECK-NEXT: 13: [B1.5] (Lifetime ends)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_const_ref() {
A a;
const A &b = a;
const A &c = A();
}
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: (CXXConstructExpr, class A [2])
// CHECK-NEXT: 2: A a[2];
// CHECK-NEXT: 3: (CXXConstructExpr, class A [0])
// CHECK-NEXT: 4: A b[0];
// lifetime of a ends when its destructors are run
// CHECK-NEXT: 5: [B1.2] (Lifetime ends)
// lifetime of b ends when its storage duration ends
// CHECK-NEXT: 6: [B1.4] (Lifetime ends)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_array() {
A a[2];
A b[0];
}
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A a;
// CHECK-NEXT: 3: (CXXConstructExpr, class A)
// CHECK-NEXT: 4: A c;
// CHECK-NEXT: 5: (CXXConstructExpr, class A)
// CHECK-NEXT: 6: A d;
// CHECK-NEXT: 7: [B1.6] (Lifetime ends)
// CHECK-NEXT: 8: [B1.4] (Lifetime ends)
// CHECK-NEXT: 9: (CXXConstructExpr, class A)
// CHECK-NEXT: 10: A b;
// CHECK-NEXT: 11: [B1.10] (Lifetime ends)
// CHECK-NEXT: 12: [B1.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_scope() {
A a;
{
A c;
A d;
}
A b;
}
// CHECK: [B4 (ENTRY)]
// CHECK-NEXT: Succs (1): B3
// CHECK: [B1]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A c;
// CHECK-NEXT: 3: [B1.2] (Lifetime ends)
// CHECK-NEXT: 4: [B3.4] (Lifetime ends)
// CHECK-NEXT: 5: [B3.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: [B3.4] (Lifetime ends)
// CHECK-NEXT: 3: [B3.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B3]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A a;
// CHECK-NEXT: 3: (CXXConstructExpr, class A)
// CHECK-NEXT: 4: A b;
// CHECK-NEXT: 5: UV
// CHECK-NEXT: 6: [B3.5] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B3.6]
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (2): B2 B1
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (2): B1 B2
void test_return() {
A a;
A b;
if (UV)
return;
A c;
}
// CHECK: [B5 (ENTRY)]
// CHECK-NEXT: Succs (1): B4
// CHECK: [B1]
// CHECK-NEXT: 1: [B4.6] (Lifetime ends)
// CHECK-NEXT: 2: [B4.2] (Lifetime ends)
// CHECK-NEXT: Preds (2): B2 B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A c;
// CHECK-NEXT: 3: [B2.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A c;
// CHECK-NEXT: 3: [B3.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B4]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A a;
// CHECK-NEXT: 3: a
// CHECK-NEXT: 4: [B4.3] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 5: [B4.4] (CXXConstructExpr, class A)
// CHECK-NEXT: 6: A b = a;
// CHECK-NEXT: 7: b
// CHECK-NEXT: 8: [B4.7] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 9: [B4.8].operator int
// CHECK-NEXT: 10: [B4.8]
// CHECK-NEXT: 11: [B4.10] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 12: [B4.11] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: if [B4.12]
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (2): B3 B2
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_if_implicit_scope() {
A a;
if (A b = a)
A c;
else
A c;
}
// CHECK: [B9 (ENTRY)]
// CHECK-NEXT: Succs (1): B8
// CHECK: [B1]
// CHECK-NEXT: 1: [B8.6] (Lifetime ends)
// CHECK-NEXT: 2: (CXXConstructExpr, class A)
// CHECK-NEXT: 3: A e;
// CHECK-NEXT: 4: [B1.3] (Lifetime ends)
// CHECK-NEXT: 5: [B8.2] (Lifetime ends)
// CHECK-NEXT: Preds (2): B2 B5
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A d;
// CHECK-NEXT: 3: [B2.2] (Lifetime ends)
// CHECK-NEXT: 4: [B4.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: [B4.2] (Lifetime ends)
// CHECK-NEXT: 3: [B8.6] (Lifetime ends)
// CHECK-NEXT: 4: [B8.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B0
// CHECK: [B4]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A c;
// CHECK-NEXT: 3: UV
// CHECK-NEXT: 4: [B4.3] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B4.4]
// CHECK-NEXT: Preds (1): B8
// CHECK-NEXT: Succs (2): B3 B2
// CHECK: [B5]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A d;
// CHECK-NEXT: 3: [B5.2] (Lifetime ends)
// CHECK-NEXT: 4: [B7.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (1): B1
// CHECK: [B6]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: [B7.2] (Lifetime ends)
// CHECK-NEXT: 3: [B8.6] (Lifetime ends)
// CHECK-NEXT: 4: [B8.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (1): B0
// CHECK: [B7]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A c;
// CHECK-NEXT: 3: UV
// CHECK-NEXT: 4: [B7.3] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B7.4]
// CHECK-NEXT: Preds (1): B8
// CHECK-NEXT: Succs (2): B6 B5
// CHECK: [B8]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A a;
// CHECK-NEXT: 3: a
// CHECK-NEXT: 4: [B8.3] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 5: [B8.4] (CXXConstructExpr, class A)
// CHECK-NEXT: 6: A b = a;
// CHECK-NEXT: 7: b
// CHECK-NEXT: 8: [B8.7] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 9: [B8.8].operator int
// CHECK-NEXT: 10: [B8.8]
// CHECK-NEXT: 11: [B8.10] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 12: [B8.11] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: if [B8.12]
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (2): B7 B4
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (3): B1 B3 B6
void test_if_jumps() {
A a;
if (A b = a) {
A c;
if (UV)
return;
A d;
} else {
A c;
if (UV)
return;
A d;
}
A e;
}
// CHECK: [B6 (ENTRY)]
// CHECK-NEXT: Succs (1): B5
// CHECK: [B1]
// CHECK-NEXT: 1: [B4.4] (Lifetime ends)
// CHECK-NEXT: 2: [B5.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B4
// CHECK: [B3]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A c;
// CHECK-NEXT: 3: [B3.2] (Lifetime ends)
// CHECK-NEXT: 4: [B4.4] (Lifetime ends)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: a
// CHECK-NEXT: 2: [B4.1] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 3: [B4.2] (CXXConstructExpr, class A)
// CHECK-NEXT: 4: A b = a;
// CHECK-NEXT: 5: b
// CHECK-NEXT: 6: [B4.5] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 7: [B4.6].operator int
// CHECK-NEXT: 8: [B4.6]
// CHECK-NEXT: 9: [B4.8] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 10: [B4.9] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: while [B4.10]
// CHECK-NEXT: Preds (2): B2 B5
// CHECK-NEXT: Succs (2): B3 B1
// CHECK: [B5]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A a;
// CHECK-NEXT: Preds (1): B6
// CHECK-NEXT: Succs (1): B4
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_while_implicit_scope() {
A a;
while (A b = a)
A c;
}
// CHECK: [B12 (ENTRY)]
// CHECK-NEXT: Succs (1): B11
// CHECK: [B1]
// CHECK-NEXT: 1: [B10.4] (Lifetime ends)
// CHECK-NEXT: 2: (CXXConstructExpr, class A)
// CHECK-NEXT: 3: A e;
// CHECK-NEXT: 4: [B1.3] (Lifetime ends)
// CHECK-NEXT: 5: [B11.2] (Lifetime ends)
// CHECK-NEXT: Preds (2): B8 B10
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: Preds (2): B3 B6
// CHECK-NEXT: Succs (1): B10
// CHECK: [B3]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A d;
// CHECK-NEXT: 3: [B3.2] (Lifetime ends)
// CHECK-NEXT: 4: [B9.2] (Lifetime ends)
// CHECK-NEXT: 5: [B10.4] (Lifetime ends)
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: [B9.2] (Lifetime ends)
// CHECK-NEXT: 3: [B10.4] (Lifetime ends)
// CHECK-NEXT: 4: [B11.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B0
// CHECK: [B5]
// CHECK-NEXT: 1: UV
// CHECK-NEXT: 2: [B5.1] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B5.2]
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (2): B4 B3
// CHECK: [B6]
// CHECK-NEXT: 1: [B9.2] (Lifetime ends)
// CHECK-NEXT: 2: [B10.4] (Lifetime ends)
// CHECK-NEXT: T: continue;
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (1): B2
// CHECK: [B7]
// CHECK-NEXT: 1: UV
// CHECK-NEXT: 2: [B7.1] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B7.2]
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (2): B6 B5
// CHECK: [B8]
// CHECK-NEXT: 1: [B9.2] (Lifetime ends)
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (1): B1
// CHECK: [B9]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A c;
// CHECK-NEXT: 3: UV
// CHECK-NEXT: 4: [B9.3] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B9.4]
// CHECK-NEXT: Preds (1): B10
// CHECK-NEXT: Succs (2): B8 B7
// CHECK: [B10]
// CHECK-NEXT: 1: a
// CHECK-NEXT: 2: [B10.1] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 3: [B10.2] (CXXConstructExpr, class A)
// CHECK-NEXT: 4: A b = a;
// CHECK-NEXT: 5: b
// CHECK-NEXT: 6: [B10.5] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 7: [B10.6].operator int
// CHECK-NEXT: 8: [B10.6]
// CHECK-NEXT: 9: [B10.8] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 10: [B10.9] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: while [B10.10]
// CHECK-NEXT: Preds (2): B2 B11
// CHECK-NEXT: Succs (2): B9 B1
// CHECK: [B11]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A a;
// CHECK-NEXT: Preds (1): B12
// CHECK-NEXT: Succs (1): B10
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (2): B1 B4
void test_while_jumps() {
A a;
while (A b = a) {
A c;
if (UV)
break;
if (UV)
continue;
if (UV)
return;
A d;
}
A e;
}
// CHECK: [B12 (ENTRY)]
// CHECK-NEXT: Succs (1): B11
// CHECK: [B1]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A d;
// CHECK-NEXT: 3: [B1.2] (Lifetime ends)
// CHECK-NEXT: 4: [B11.2] (Lifetime ends)
// CHECK-NEXT: Preds (2): B8 B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: UV
// CHECK-NEXT: 2: [B2.1] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: do ... while [B2.2]
// CHECK-NEXT: Preds (2): B3 B6
// CHECK-NEXT: Succs (2): B10 B1
// CHECK: [B3]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A c;
// CHECK-NEXT: 3: [B3.2] (Lifetime ends)
// CHECK-NEXT: 4: [B9.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: [B9.2] (Lifetime ends)
// CHECK-NEXT: 3: [B11.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B0
// CHECK: [B5]
// CHECK-NEXT: 1: UV
// CHECK-NEXT: 2: [B5.1] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B5.2]
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (2): B4 B3
// CHECK: [B6]
// CHECK-NEXT: 1: [B9.2] (Lifetime ends)
// CHECK-NEXT: T: continue;
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (1): B2
// CHECK: [B7]
// CHECK-NEXT: 1: UV
// CHECK-NEXT: 2: [B7.1] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B7.2]
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (2): B6 B5
// CHECK: [B8]
// CHECK-NEXT: 1: [B9.2] (Lifetime ends)
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (1): B1
// CHECK: [B9]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A b;
// CHECK-NEXT: 3: UV
// CHECK-NEXT: 4: [B9.3] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B9.4]
// CHECK-NEXT: Preds (2): B10 B11
// CHECK-NEXT: Succs (2): B8 B7
// CHECK: [B10]
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B9
// CHECK: [B11]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A a;
// CHECK-NEXT: Preds (1): B12
// CHECK-NEXT: Succs (1): B9
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (2): B1 B4
void test_do_jumps() {
A a;
do {
A b;
if (UV)
break;
if (UV)
continue;
if (UV)
return;
A c;
} while (UV);
A d;
}
// CHECK: [B6 (ENTRY)]
// CHECK-NEXT: Succs (1): B5
// CHECK: [B1]
// CHECK-NEXT: 1: [B4.4] (Lifetime ends)
// CHECK-NEXT: 2: [B5.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B4
// CHECK: [B3]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A c;
// CHECK-NEXT: 3: [B3.2] (Lifetime ends)
// CHECK-NEXT: 4: [B4.4] (Lifetime ends)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: a
// CHECK-NEXT: 2: [B4.1] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 3: [B4.2] (CXXConstructExpr, class A)
// CHECK-NEXT: 4: A b = a;
// CHECK-NEXT: 5: b
// CHECK-NEXT: 6: [B4.5] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 7: [B4.6].operator int
// CHECK-NEXT: 8: [B4.6]
// CHECK-NEXT: 9: [B4.8] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 10: [B4.9] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: for (...; [B4.10]; )
// CHECK-NEXT: Preds (2): B2 B5
// CHECK-NEXT: Succs (2): B3 B1
// CHECK: [B5]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A a;
// CHECK-NEXT: Preds (1): B6
// CHECK-NEXT: Succs (1): B4
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_for_implicit_scope() {
for (A a; A b = a;)
A c;
}
// CHECK: [B12 (ENTRY)]
// CHECK-NEXT: Succs (1): B11
// CHECK: [B1]
// CHECK-NEXT: 1: [B10.4] (Lifetime ends)
// CHECK-NEXT: 2: [B11.4] (Lifetime ends)
// CHECK-NEXT: 3: (CXXConstructExpr, class A)
// CHECK-NEXT: 4: A f;
// CHECK-NEXT: 5: [B1.4] (Lifetime ends)
// CHECK-NEXT: 6: [B11.2] (Lifetime ends)
// CHECK-NEXT: Preds (2): B8 B10
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: Preds (2): B3 B6
// CHECK-NEXT: Succs (1): B10
// CHECK: [B3]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A e;
// CHECK-NEXT: 3: [B3.2] (Lifetime ends)
// CHECK-NEXT: 4: [B9.2] (Lifetime ends)
// CHECK-NEXT: 5: [B10.4] (Lifetime ends)
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: [B9.2] (Lifetime ends)
// CHECK-NEXT: 3: [B10.4] (Lifetime ends)
// CHECK-NEXT: 4: [B11.4] (Lifetime ends)
// CHECK-NEXT: 5: [B11.2] (Lifetime ends)
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B0
// CHECK: [B5]
// CHECK-NEXT: 1: UV
// CHECK-NEXT: 2: [B5.1] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B5.2]
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (2): B4 B3
// CHECK: [B6]
// CHECK-NEXT: 1: [B9.2] (Lifetime ends)
// CHECK-NEXT: T: continue;
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (1): B2
// CHECK: [B7]
// CHECK-NEXT: 1: UV
// CHECK-NEXT: 2: [B7.1] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B7.2]
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (2): B6 B5
// CHECK: [B8]
// CHECK-NEXT: 1: [B9.2] (Lifetime ends)
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (1): B1
// CHECK: [B9]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A d;
// CHECK-NEXT: 3: UV
// CHECK-NEXT: 4: [B9.3] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B9.4]
// CHECK-NEXT: Preds (1): B10
// CHECK-NEXT: Succs (2): B8 B7
// CHECK: [B10]
// CHECK-NEXT: 1: b
// CHECK-NEXT: 2: [B10.1] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 3: [B10.2] (CXXConstructExpr, class A)
// CHECK-NEXT: 4: A c = b;
// CHECK-NEXT: 5: c
// CHECK-NEXT: 6: [B10.5] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 7: [B10.6].operator int
// CHECK-NEXT: 8: [B10.6]
// CHECK-NEXT: 9: [B10.8] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 10: [B10.9] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: for (...; [B10.10]; )
// CHECK-NEXT: Preds (2): B2 B11
// CHECK-NEXT: Succs (2): B9 B1
// CHECK: [B11]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A a;
// CHECK-NEXT: 3: (CXXConstructExpr, class A)
// CHECK-NEXT: 4: A b;
// CHECK-NEXT: Preds (1): B12
// CHECK-NEXT: Succs (1): B10
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (2): B1 B4
void test_for_jumps() {
A a;
for (A b; A c = b;) {
A d;
if (UV)
break;
if (UV)
continue;
if (UV)
return;
A e;
}
A f;
}
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: (CXXConstructExpr, class A)
// CHECK-NEXT: 2: A a;
// CHECK-NEXT: 3: int n;
// CHECK-NEXT: 4: n
// CHECK-NEXT: 5: &[B1.4]
// CHECK-NEXT: 6: a
// CHECK-NEXT: 7: [B1.6].p
// CHECK-NEXT: 8: [B1.7] = [B1.5]
// CHECK-NEXT: 9: [B1.2] (Lifetime ends)
// CHECK-NEXT: 10: [B1.3] (Lifetime ends)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_trivial_vs_non_trivial_order() {
A a;
int n;
a.p = &n;
}
// CHECK: [B4 (ENTRY)]
// CHECK-NEXT: Succs (1): B3
// CHECK: [B1]
// CHECK-NEXT: a:
// CHECK-NEXT: 1: 1
// CHECK-NEXT: 2: i
// CHECK-NEXT: 3: [B1.2] = [B1.1]
// CHECK-NEXT: 4: [B2.1] (Lifetime ends)
// CHECK-NEXT: Preds (2): B2 B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: int i;
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: T: goto a;
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void goto_past_declaration() {
goto a;
int i;
a:
i = 1;
}
// CHECK: [B4 (ENTRY)]
// CHECK-NEXT: Succs (1): B3
// CHECK: [B1]
// CHECK-NEXT: a:
// CHECK-NEXT: 1: 1
// CHECK-NEXT: 2: k
// CHECK-NEXT: 3: [B1.2] = [B1.1]
// CHECK-NEXT: 4: [B2.4] (Lifetime ends)
// CHECK-NEXT: Preds (2): B2 B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: int j;
// CHECK-NEXT: 2: [B2.1] (Lifetime ends)
// CHECK-NEXT: 3: [B3.1] (Lifetime ends)
// CHECK-NEXT: 4: int k;
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: 1: int i;
// CHECK-NEXT: 2: [B3.1] (Lifetime ends)
// CHECK-NEXT: T: goto a;
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void goto_past_declaration2() {
{
int i;
goto a;
int j;
}
{
int k;
a:
k = 1;
}
}
struct B {
~B();
};
// CHECK: [B4 (ENTRY)]
// CHECK-NEXT: Succs (1): B3
// CHECK: [B1]
// CHECK-NEXT: 1: i
// CHECK-NEXT: 2: [B1.1]++
// CHECK-NEXT: 3: [B2.2] (Lifetime ends)
// CHECK-NEXT: 4: [B3.1] (Lifetime ends)
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: label:
// CHECK-NEXT: 1: (CXXConstructExpr, struct B)
// CHECK-NEXT: 2: B b;
// CHECK-NEXT: 3: [B2.2] (Lifetime ends)
// CHECK-NEXT: T: goto label;
// CHECK-NEXT: Preds (2): B3 B2
// CHECK-NEXT: Succs (1): B2
// CHECK: [B3]
// CHECK-NEXT: 1: int i;
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B2
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
int backpatched_goto() {
int i;
label:
B b;
goto label;
i++;
}