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llvm-project/clang/test/Analysis/scopes-cfg-output.cpp
Sirraide 12f78e740c
[Clang] [NFC] Fix unintended -Wreturn-type warnings everywhere in the test suite (#123464) 
In preparation of making `-Wreturn-type` default to an error (as there
is virtually no situation where you’d *want* to fall off the end of a
function that is supposed to return a value), this patch fixes tests
that have relied on this being only a warning, of which there seem 
to be 3 kinds:

1. Tests which for no apparent reason have a function that triggers the
warning.

I suspect that a lot of these were on accident (or from before the
warning was introduced), since a lot of people will open issues w/ their
problematic code in the `main` function (which is the one case where you
don’t need to return from a non-void function, after all...), which
someone will then copy, possibly into a namespace, possibly renaming it,
the end result of that being that you end up w/ something that
definitely is not `main` anymore, but which still is declared as
returning `int`, and which still has no return statement (another reason
why I think this might apply to a lot of these is because usually the
actual return type of such problematic functions is quite literally
`int`).
  
A lot of these are really old tests that don’t use `-verify`, which is
why no-one noticed or had to care about the extra warning that was
already being emitted by them until now.

2. Tests which test either `-Wreturn-type`, `[[noreturn]]`, or what
codegen and sanitisers do whenever you do fall off the end of a
function.

3. Tests where I struggle to figure out what is even being tested
(usually because they’re Objective-C tests, and I don’t know
Objective-C), whether falling off the end of a function matters in the
first place, and tests where actually spelling out an expression to
return would be rather cumbersome (e.g. matrix types currently don’t
support list initialisation, so I can’t write e.g. `return {}`).

For tests that fall into categories 2 and 3, I just added
`-Wno-error=return-type` to the `RUN` lines and called it a day. This
was especially necessary for the former since `-Wreturn-type` is an
analysis-based warning, meaning that it is currently impossible to test
for more than one occurrence of it in the same compilation if it
defaults to an error since the analysis pass is skipped for subsequent
functions as soon as an error is emitted.

I’ve also added `-Werror=return-type` to a few tests that I had already
updated as this patch was previously already making the warning an error
by default, but we’ve decided to split that into two patches instead.
2025-01-18 19:16:33 +01:00

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// RUN: %clang_cc1 -fcxx-exceptions -fexceptions -analyze -analyzer-checker=debug.DumpCFG -analyzer-config cfg-scopes=true %s > %t 2>&1
// RUN: FileCheck --input-file=%t %s
class A {
public:
// CHECK: [B1 (ENTRY)]
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
A() {}
// CHECK: [B1 (ENTRY)]
// CHECK-NEXT: Succs (1): B0
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
~A() {}
// 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;
};
int getX();
extern const bool UV;
// CHECK: [B2 (ENTRY)]
// CHECK-NEXT: Succs (1): B1
// CHECK: [B1]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B1.3], A[2])
// CHECK-NEXT: 3: A a[2];
// CHECK-NEXT: 4: (CXXConstructExpr, [B1.5], A[0])
// CHECK-NEXT: 5: A b[0];
// CHECK-NEXT: 6: [B1.3].~A[2]() (Implicit destructor)
// CHECK-NEXT: 7: CFGScopeEnd(a)
// 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: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B1.3], A)
// CHECK-NEXT: 3: A a;
// CHECK-NEXT: 4: CFGScopeBegin(c)
// CHECK-NEXT: 5: (CXXConstructExpr, [B1.6], A)
// CHECK-NEXT: 6: A c;
// CHECK-NEXT: 7: (CXXConstructExpr, [B1.8], A)
// CHECK-NEXT: 8: A d;
// CHECK-NEXT: 9: [B1.8].~A() (Implicit destructor)
// CHECK-NEXT: 10: [B1.6].~A() (Implicit destructor)
// CHECK-NEXT: 11: CFGScopeEnd(c)
// CHECK-NEXT: 12: (CXXConstructExpr, [B1.13], A)
// CHECK-NEXT: 13: A b;
// CHECK-NEXT: 14: [B1.13].~A() (Implicit destructor)
// CHECK-NEXT: 15: [B1.3].~A() (Implicit destructor)
// CHECK-NEXT: 16: CFGScopeEnd(a)
// 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, [B1.2], A)
// CHECK-NEXT: 2: A c;
// CHECK-NEXT: 3: [B1.2].~A() (Implicit destructor)
// CHECK-NEXT: 4: [B3.5].~A() (Implicit destructor)
// CHECK-NEXT: 5: [B3.3].~A() (Implicit destructor)
// CHECK-NEXT: 6: CFGScopeEnd(a)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: [B3.5].~A() (Implicit destructor)
// CHECK-NEXT: 3: [B3.3].~A() (Implicit destructor)
// CHECK-NEXT: 4: CFGScopeEnd(a)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B3]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B3.3], A)
// CHECK-NEXT: 3: A a;
// CHECK-NEXT: 4: (CXXConstructExpr, [B3.5], A)
// CHECK-NEXT: 5: A b;
// CHECK-NEXT: 6: UV
// CHECK-NEXT: 7: [B3.6] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B3.7]
// 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: [B4.8].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(b)
// CHECK-NEXT: 3: [B4.3].~A() (Implicit destructor)
// CHECK-NEXT: 4: CFGScopeEnd(a)
// CHECK-NEXT: Preds (2): B2 B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: CFGScopeBegin(c)
// CHECK-NEXT: 2: (CXXConstructExpr, [B2.3], A)
// CHECK-NEXT: 3: A c;
// CHECK-NEXT: 4: [B2.3].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(c)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: 1: CFGScopeBegin(c)
// CHECK-NEXT: 2: (CXXConstructExpr, [B3.3], A)
// CHECK-NEXT: 3: A c;
// CHECK-NEXT: 4: [B3.3].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(c)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B4]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B4.3], A)
// CHECK-NEXT: 3: A a;
// CHECK-NEXT: 4: CFGScopeBegin(b)
// CHECK-NEXT: 5: a
// CHECK-NEXT: 6: [B4.5] (ImplicitCastExpr, NoOp, const A)
// CHECK-NEXT: 7: [B4.6] (CXXConstructExpr, [B4.8], A)
// CHECK-NEXT: 8: A b = a;
// CHECK-NEXT: 9: b
// CHECK-NEXT: 10: [B4.9] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 11: [B4.10].operator int
// CHECK-NEXT: 12: [B4.10]
// CHECK-NEXT: 13: [B4.12] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 14: [B4.13] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: if [B4.14]
// 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: [B8.8].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(b)
// CHECK-NEXT: 3: (CXXConstructExpr, [B1.4], A)
// CHECK-NEXT: 4: A e;
// CHECK-NEXT: 5: [B1.4].~A() (Implicit destructor)
// CHECK-NEXT: 6: [B8.3].~A() (Implicit destructor)
// CHECK-NEXT: 7: CFGScopeEnd(a)
// CHECK-NEXT: Preds (2): B2 B5
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: (CXXConstructExpr, [B2.2], A)
// CHECK-NEXT: 2: A d;
// CHECK-NEXT: 3: [B2.2].~A() (Implicit destructor)
// CHECK-NEXT: 4: [B4.3].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(c)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: [B4.3].~A() (Implicit destructor)
// CHECK-NEXT: 3: CFGScopeEnd(c)
// CHECK-NEXT: 4: [B8.8].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(b)
// CHECK-NEXT: 6: [B8.3].~A() (Implicit destructor)
// CHECK-NEXT: 7: CFGScopeEnd(a)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B0
// CHECK: [B4]
// CHECK-NEXT: 1: CFGScopeBegin(c)
// CHECK-NEXT: 2: (CXXConstructExpr, [B4.3], A)
// CHECK-NEXT: 3: A c;
// CHECK-NEXT: 4: UV
// CHECK-NEXT: 5: [B4.4] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B4.5]
// CHECK-NEXT: Preds (1): B8
// CHECK-NEXT: Succs (2): B3 B2
// CHECK: [B5]
// CHECK-NEXT: 1: (CXXConstructExpr, [B5.2], A)
// CHECK-NEXT: 2: A d;
// CHECK-NEXT: 3: [B5.2].~A() (Implicit destructor)
// CHECK-NEXT: 4: [B7.3].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(c)
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (1): B1
// CHECK: [B6]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: [B7.3].~A() (Implicit destructor)
// CHECK-NEXT: 3: CFGScopeEnd(c)
// CHECK-NEXT: 4: [B8.8].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(b)
// CHECK-NEXT: 6: [B8.3].~A() (Implicit destructor)
// CHECK-NEXT: 7: CFGScopeEnd(a)
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (1): B0
// CHECK: [B7]
// CHECK-NEXT: 1: CFGScopeBegin(c)
// CHECK-NEXT: 2: (CXXConstructExpr, [B7.3], A)
// CHECK-NEXT: 3: A c;
// CHECK-NEXT: 4: UV
// CHECK-NEXT: 5: [B7.4] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B7.5]
// CHECK-NEXT: Preds (1): B8
// CHECK-NEXT: Succs (2): B6 B5
// CHECK: [B8]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B8.3], A)
// CHECK-NEXT: 3: A a;
// CHECK-NEXT: 4: CFGScopeBegin(b)
// CHECK-NEXT: 5: a
// CHECK-NEXT: 6: [B8.5] (ImplicitCastExpr, NoOp, const A)
// CHECK-NEXT: 7: [B8.6] (CXXConstructExpr, [B8.8], A)
// CHECK-NEXT: 8: A b = a;
// CHECK-NEXT: 9: b
// CHECK-NEXT: 10: [B8.9] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 11: [B8.10].operator int
// CHECK-NEXT: 12: [B8.10]
// CHECK-NEXT: 13: [B8.12] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 14: [B8.13] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: if [B8.14]
// 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: [B4.5].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(b)
// CHECK-NEXT: 3: [B5.3].~A() (Implicit destructor)
// CHECK-NEXT: 4: CFGScopeEnd(a)
// 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: CFGScopeBegin(c)
// CHECK-NEXT: 2: (CXXConstructExpr, [B3.3], A)
// CHECK-NEXT: 3: A c;
// CHECK-NEXT: 4: [B3.3].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(c)
// CHECK-NEXT: 6: [B4.5].~A() (Implicit destructor)
// CHECK-NEXT: 7: CFGScopeEnd(b)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: CFGScopeBegin(b)
// CHECK-NEXT: 2: a
// CHECK-NEXT: 3: [B4.2] (ImplicitCastExpr, NoOp, const A)
// CHECK-NEXT: 4: [B4.3] (CXXConstructExpr, [B4.5], A)
// CHECK-NEXT: 5: A b = a;
// CHECK-NEXT: 6: b
// CHECK-NEXT: 7: [B4.6] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 8: [B4.7].operator int
// CHECK-NEXT: 9: [B4.7]
// CHECK-NEXT: 10: [B4.9] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 11: [B4.10] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: while [B4.11]
// CHECK-NEXT: Preds (2): B2 B5
// CHECK-NEXT: Succs (2): B3 B1
// CHECK: [B5]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B5.3], A)
// CHECK-NEXT: 3: 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: [B10.5].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(b)
// CHECK-NEXT: 3: (CXXConstructExpr, [B1.4], A)
// CHECK-NEXT: 4: A e;
// CHECK-NEXT: 5: [B1.4].~A() (Implicit destructor)
// CHECK-NEXT: 6: [B11.3].~A() (Implicit destructor)
// CHECK-NEXT: 7: CFGScopeEnd(a)
// 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, [B3.2], A)
// CHECK-NEXT: 2: A d;
// CHECK-NEXT: 3: [B3.2].~A() (Implicit destructor)
// CHECK-NEXT: 4: [B9.3].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(c)
// CHECK-NEXT: 6: [B10.5].~A() (Implicit destructor)
// CHECK-NEXT: 7: CFGScopeEnd(b)
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: [B9.3].~A() (Implicit destructor)
// CHECK-NEXT: 3: CFGScopeEnd(c)
// CHECK-NEXT: 4: [B10.5].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(b)
// CHECK-NEXT: 6: [B11.3].~A() (Implicit destructor)
// CHECK-NEXT: 7: CFGScopeEnd(a)
// 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: [B9.3].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(c)
// CHECK-NEXT: 3: [B10.5].~A() (Implicit destructor)
// CHECK-NEXT: 4: CFGScopeEnd(b)
// 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: [B9.3].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(c)
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (1): B1
// CHECK: [B9]
// CHECK-NEXT: 1: CFGScopeBegin(c)
// CHECK-NEXT: 2: (CXXConstructExpr, [B9.3], A)
// CHECK-NEXT: 3: A c;
// CHECK-NEXT: 4: UV
// CHECK-NEXT: 5: [B9.4] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B9.5]
// CHECK-NEXT: Preds (1): B10
// CHECK-NEXT: Succs (2): B8 B7
// CHECK: [B10]
// CHECK-NEXT: 1: CFGScopeBegin(b)
// CHECK-NEXT: 2: a
// CHECK-NEXT: 3: [B10.2] (ImplicitCastExpr, NoOp, const A)
// CHECK-NEXT: 4: [B10.3] (CXXConstructExpr, [B10.5], A)
// CHECK-NEXT: 5: A b = a;
// CHECK-NEXT: 6: b
// CHECK-NEXT: 7: [B10.6] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 8: [B10.7].operator int
// CHECK-NEXT: 9: [B10.7]
// CHECK-NEXT: 10: [B10.9] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 11: [B10.10] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: while [B10.11]
// CHECK-NEXT: Preds (2): B2 B11
// CHECK-NEXT: Succs (2): B9 B1
// CHECK: [B11]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B11.3], A)
// CHECK-NEXT: 3: 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, [B1.2], A)
// CHECK-NEXT: 2: A d;
// CHECK-NEXT: 3: [B1.2].~A() (Implicit destructor)
// CHECK-NEXT: 4: [B11.3].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(a)
// 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, [B3.2], A)
// CHECK-NEXT: 2: A c;
// CHECK-NEXT: 3: [B3.2].~A() (Implicit destructor)
// CHECK-NEXT: 4: [B9.3].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(b)
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: [B9.3].~A() (Implicit destructor)
// CHECK-NEXT: 3: CFGScopeEnd(b)
// CHECK-NEXT: 4: [B11.3].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(a)
// 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: [B9.3].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(b)
// 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: [B9.3].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(b)
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (1): B1
// CHECK: [B9]
// CHECK-NEXT: 1: CFGScopeBegin(b)
// CHECK-NEXT: 2: (CXXConstructExpr, [B9.3], A)
// CHECK-NEXT: 3: A b;
// CHECK-NEXT: 4: UV
// CHECK-NEXT: 5: [B9.4] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B9.5]
// 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: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B11.3], A)
// CHECK-NEXT: 3: 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: [B4.5].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(b)
// CHECK-NEXT: 3: [B5.3].~A() (Implicit destructor)
// CHECK-NEXT: 4: CFGScopeEnd(a)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: b
// CHECK-NEXT: 2: [B2.1].p
// CHECK-NEXT: 3: [B4.5].~A() (Implicit destructor)
// CHECK-NEXT: 4: CFGScopeEnd(b)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B4
// CHECK: [B3]
// CHECK-NEXT: 1: CFGScopeBegin(c)
// CHECK-NEXT: 2: (CXXConstructExpr, [B3.3], A)
// CHECK-NEXT: 3: A c;
// CHECK-NEXT: 4: [B3.3].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(c)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: CFGScopeBegin(b)
// CHECK-NEXT: 2: a
// CHECK-NEXT: 3: [B4.2] (ImplicitCastExpr, NoOp, const A)
// CHECK-NEXT: 4: [B4.3] (CXXConstructExpr, [B4.5], A)
// CHECK-NEXT: 5: A b = a;
// CHECK-NEXT: 6: b
// CHECK-NEXT: 7: [B4.6] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 8: [B4.7].operator int
// CHECK-NEXT: 9: [B4.7]
// CHECK-NEXT: 10: [B4.9] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 11: [B4.10] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: for (...; [B4.11]; ...)
// CHECK-NEXT: Preds (2): B2 B5
// CHECK-NEXT: Succs (2): B3 B1
// CHECK: [B5]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B5.3], A)
// CHECK-NEXT: 3: 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; b.p)
A c;
}
// CHECK: [B12 (ENTRY)]
// CHECK-NEXT: Succs (1): B11
// CHECK: [B1]
// CHECK-NEXT: 1: [B10.5].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(c)
// CHECK-NEXT: 3: [B11.6].~A() (Implicit destructor)
// CHECK-NEXT: 4: CFGScopeEnd(b)
// CHECK-NEXT: 5: (CXXConstructExpr, [B1.6], A)
// CHECK-NEXT: 6: A f;
// CHECK-NEXT: 7: [B1.6].~A() (Implicit destructor)
// CHECK-NEXT: 8: [B11.3].~A() (Implicit destructor)
// CHECK-NEXT: 9: CFGScopeEnd(a)
// CHECK-NEXT: Preds (2): B8 B10
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: [B10.5].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(c)
// CHECK-NEXT: Preds (2): B3 B6
// CHECK-NEXT: Succs (1): B10
// CHECK: [B3]
// CHECK-NEXT: 1: (CXXConstructExpr, [B3.2], A)
// CHECK-NEXT: 2: A e;
// CHECK-NEXT: 3: [B3.2].~A() (Implicit destructor)
// CHECK-NEXT: 4: [B9.3].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(d)
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: [B9.3].~A() (Implicit destructor)
// CHECK-NEXT: 3: CFGScopeEnd(d)
// CHECK-NEXT: 4: [B10.5].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(c)
// CHECK-NEXT: 6: [B11.6].~A() (Implicit destructor)
// CHECK-NEXT: 7: CFGScopeEnd(b)
// CHECK-NEXT: 8: [B11.3].~A() (Implicit destructor)
// CHECK-NEXT: 9: CFGScopeEnd(a)
// 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: [B9.3].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(d)
// 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: [B9.3].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(d)
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (1): B1
// CHECK: [B9]
// CHECK-NEXT: 1: CFGScopeBegin(d)
// CHECK-NEXT: 2: (CXXConstructExpr, [B9.3], A)
// CHECK-NEXT: 3: A d;
// CHECK-NEXT: 4: UV
// CHECK-NEXT: 5: [B9.4] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B9.5]
// CHECK-NEXT: Preds (1): B10
// CHECK-NEXT: Succs (2): B8 B7
// CHECK: [B10]
// CHECK-NEXT: 1: CFGScopeBegin(c)
// CHECK-NEXT: 2: b
// CHECK-NEXT: 3: [B10.2] (ImplicitCastExpr, NoOp, const A)
// CHECK-NEXT: 4: [B10.3] (CXXConstructExpr, [B10.5], A)
// CHECK-NEXT: 5: A c = b;
// CHECK-NEXT: 6: c
// CHECK-NEXT: 7: [B10.6] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 8: [B10.7].operator int
// CHECK-NEXT: 9: [B10.7]
// CHECK-NEXT: 10: [B10.9] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 11: [B10.10] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: for (...; [B10.11]; )
// CHECK-NEXT: Preds (2): B2 B11
// CHECK-NEXT: Succs (2): B9 B1
// CHECK: [B11]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B11.3], A)
// CHECK-NEXT: 3: A a;
// CHECK-NEXT: 4: CFGScopeBegin(b)
// CHECK-NEXT: 5: (CXXConstructExpr, [B11.6], A)
// CHECK-NEXT: 6: 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: [B9 (ENTRY)]
// CHECK-NEXT: Succs (1): B8
// CHECK: [B1]
// CHECK-NEXT: 1: [B7.5].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(b)
// CHECK-NEXT: 3: [B8.3].~A() (Implicit destructor)
// CHECK-NEXT: 4: CFGScopeEnd(a)
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: [B5.4] ? [B3.3] : [B4.2]
// CHECK-NEXT: 2: [B7.5].~A() (Implicit destructor)
// CHECK-NEXT: 3: CFGScopeEnd(b)
// CHECK-NEXT: Preds (2): B3 B4
// CHECK-NEXT: Succs (1): B7
// CHECK: [B3]
// CHECK-NEXT: 1: b
// CHECK-NEXT: 2: [B3.1].p
// CHECK-NEXT: 3: [B3.2]++
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: 0
// CHECK-NEXT: 2: [B4.1] (ImplicitCastExpr, NullToPointer, int *)
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B2
// CHECK: [B5]
// CHECK-NEXT: 1: b
// CHECK-NEXT: 2: [B5.1].p
// CHECK-NEXT: 3: [B5.2] (ImplicitCastExpr, LValueToRValue, int *)
// CHECK-NEXT: 4: [B5.3] (ImplicitCastExpr, PointerToBoolean, _Bool)
// CHECK-NEXT: T: [B5.4] ? ... : ...
// CHECK-NEXT: Preds (1): B6
// CHECK-NEXT: Succs (2): B3 B4
// CHECK: [B6]
// CHECK-NEXT: 1: 0
// CHECK-NEXT: 2: (void)[B6.1] (CStyleCastExpr, ToVoid, void)
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (1): B5
// CHECK: [B7]
// CHECK-NEXT: 1: CFGScopeBegin(b)
// CHECK-NEXT: 2: a
// CHECK-NEXT: 3: [B7.2] (ImplicitCastExpr, NoOp, const A)
// CHECK-NEXT: 4: [B7.3] (CXXConstructExpr, [B7.5], A)
// CHECK-NEXT: 5: A b = a;
// CHECK-NEXT: 6: b
// CHECK-NEXT: 7: [B7.6] (ImplicitCastExpr, NoOp, const class A)
// CHECK-NEXT: 8: [B7.7].operator int
// CHECK-NEXT: 9: [B7.7]
// CHECK-NEXT: 10: [B7.9] (ImplicitCastExpr, UserDefinedConversion, int)
// CHECK-NEXT: 11: [B7.10] (ImplicitCastExpr, IntegralToBoolean, _Bool)
// CHECK-NEXT: T: for (...; [B7.11]; ...)
// CHECK-NEXT: Preds (2): B2 B8
// CHECK-NEXT: Succs (2): B6 B1
// CHECK: [B8]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B8.3], A)
// CHECK-NEXT: 3: A a;
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (1): B7
void test_for_inc_conditional() {
for (A a; A b = a; b.p ? b.p++ : 0)
(void)0;
}
// CHECK: [B9 (ENTRY)]
// CHECK-NEXT: Succs (1): B7
// CHECK: [B1]
// CHECK-NEXT: l1:
// CHECK-NEXT: 1: (CXXConstructExpr, [B1.2], A)
// CHECK-NEXT: 2: A c;
// CHECK-NEXT: 3: [B1.2].~A() (Implicit destructor)
// CHECK-NEXT: 4: [B6.4].~A() (Implicit destructor)
// CHECK-NEXT: 5: [B6.2].~A() (Implicit destructor)
// CHECK-NEXT: 6: [B7.3].~A() (Implicit destructor)
// CHECK-NEXT: 7: CFGScopeEnd(a)
// CHECK-NEXT: Preds (2): B2 B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: (CXXConstructExpr, [B2.2], A)
// CHECK-NEXT: 2: A nb;
// CHECK-NEXT: 3: [B2.2].~A() (Implicit destructor)
// CHECK-NEXT: 4: [B6.7].~A() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(na)
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: 1: [B6.7].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(na)
// CHECK-NEXT: T: goto l1;
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B4]
// CHECK-NEXT: 1: UV
// CHECK-NEXT: 2: [B4.1] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B4.2]
// CHECK-NEXT: Preds (1): B6
// CHECK-NEXT: Succs (2): B3 B2
// CHECK: [B5]
// CHECK-NEXT: Preds (1): B6
// CHECK-NEXT: Succs (1): B8
// CHECK: [B6]
// CHECK-NEXT: l0:
// CHECK-NEXT: 1: (CXXConstructExpr, [B6.2], A)
// CHECK-NEXT: 2: A cb;
// CHECK-NEXT: 3: (CXXConstructExpr, [B6.4], A)
// CHECK-NEXT: 4: A b;
// CHECK-NEXT: 5: CFGScopeBegin(na)
// CHECK-NEXT: 6: (CXXConstructExpr, [B6.7], A)
// CHECK-NEXT: 7: A na;
// CHECK-NEXT: 8: UV
// CHECK-NEXT: 9: [B6.8] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B6.9]
// CHECK-NEXT: Preds (2): B7 B8
// CHECK-NEXT: Succs (2): B5 B4
// CHECK: [B7]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B7.3], A)
// CHECK-NEXT: 3: A a;
// CHECK-NEXT: Preds (1): B9
// CHECK-NEXT: Succs (1): B6
// CHECK: [B8]
// CHECK-NEXT: 1: [B6.7].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(na)
// CHECK-NEXT: 3: [B6.4].~A() (Implicit destructor)
// CHECK-NEXT: 4: [B6.2].~A() (Implicit destructor)
// CHECK-NEXT: T: goto l0;
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B6
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_goto() {
A a;
l0:
A cb;
A b;
{ A na;
if (UV) goto l0;
if (UV) goto l1;
A nb;
}
l1:
A c;
}
// CHECK: [B7 (ENTRY)]
// CHECK-NEXT: Succs (1): B6
// CHECK: [B1]
// CHECK-NEXT: 1: CFGScopeEnd(i)
// CHECK-NEXT: 2: CFGScopeBegin(unused2)
// CHECK-NEXT: 3: int unused2;
// CHECK-NEXT: 4: CFGScopeEnd(unused2)
// CHECK-NEXT: Preds (2): B4 B5
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: i
// CHECK-NEXT: 2: ++[B2.1]
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B5
// CHECK: [B3]
// CHECK-NEXT: 1: CFGScopeEnd(unused1)
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: CFGScopeBegin(unused1)
// CHECK-NEXT: 2: int unused1;
// CHECK-NEXT: 3: CFGScopeEnd(unused1)
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B1
// CHECK: [B5]
// CHECK-NEXT: 1: i
// CHECK-NEXT: 2: [B5.1] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: 3: 3
// CHECK-NEXT: 4: [B5.2] < [B5.3]
// CHECK-NEXT: T: for (...; [B5.4]; ...)
// CHECK-NEXT: Preds (2): B2 B6
// CHECK-NEXT: Succs (2): B4 B1
// CHECK: [B6]
// CHECK-NEXT: 1: CFGScopeBegin(i)
// CHECK-NEXT: 2: 0
// CHECK-NEXT: 3: int i = 0;
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (1): B5
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_for_compound_and_break() {
for (int i = 0; i < 3; ++i) {
{
int unused1;
break;
}
}
{
int unused2;
}
}
// CHECK: [B6 (ENTRY)]
// CHECK-NEXT: Succs (1): B5
// CHECK: [B1]
// CHECK-NEXT: 1: CFGScopeEnd(__end1)
// CHECK-NEXT: 2: CFGScopeEnd(__begin1)
// CHECK-NEXT: 3: CFGScopeEnd(__range1)
// CHECK-NEXT: 4: [B5.3].~A[10]() (Implicit destructor)
// CHECK-NEXT: 5: CFGScopeEnd(a)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: __begin1
// CHECK-NEXT: 2: [B2.1] (ImplicitCastExpr, LValueToRValue, A *)
// CHECK-NEXT: 3: __end1
// CHECK-NEXT: 4: [B2.3] (ImplicitCastExpr, LValueToRValue, A *)
// CHECK-NEXT: 5: [B2.2] != [B2.4]
// CHECK-NEXT: T: for (auto &i : [B5.4])
// CHECK: [B4.11];
// CHECK: Preds (2): B3 B5
// CHECK-NEXT: Succs (2): B4 B1
// CHECK: [B3]
// CHECK-NEXT: 1: __begin1
// CHECK-NEXT: 2: ++[B3.1]
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: CFGScopeBegin(i)
// CHECK-NEXT: 2: __begin1
// CHECK-NEXT: 3: [B4.2] (ImplicitCastExpr, LValueToRValue, A *)
// CHECK-NEXT: 4: *[B4.3]
// CHECK-NEXT: 5: auto &i
// CHECK-NEXT: 6: operator=
// CHECK-NEXT: 7: [B4.6] (ImplicitCastExpr, FunctionToPointerDecay, A &(*)(const A &)
// CHECK-NEXT: 8: i
// CHECK-NEXT: 9: b
// CHECK-NEXT: 10: [B4.9] (ImplicitCastExpr, NoOp, const A)
// CHECK-NEXT: 11: [B4.8] = [B4.10] (OperatorCall)
// CHECK-NEXT: 12: CFGScopeEnd(i)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B3
// CHECK: [B5]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B5.3], A[10])
// CHECK-NEXT: 3: A a[10];
// CHECK-NEXT: 4: a
// CHECK-NEXT: 5: auto &&__range1 = a;
// CHECK-NEXT: 6: CFGScopeBegin(__end1)
// CHECK-NEXT: 7: __range1
// CHECK-NEXT: 8: [B5.7] (ImplicitCastExpr, ArrayToPointerDecay, A *)
// CHECK-NEXT: 9: 10
// CHECK-NEXT: 10: [B5.8] + [B5.9]
// CHECK-NEXT: 11: auto __end1 = __range1 + 10
// CHECK-NEXT: 12: __range1
// CHECK-NEXT: 13: [B5.12] (ImplicitCastExpr, ArrayToPointerDecay, A *)
// CHECK-NEXT: 14: auto __begin1 = __range1;
// CHECK-NEXT: Preds (1): B6
// CHECK-NEXT: Succs (1): B2
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_range_for(A &b) {
A a[10];
for (auto &i : a)
i = b;
}
// CHECK: [B8 (ENTRY)]
// CHECK-NEXT: Succs (1): B2
// CHECK: [B1]
// CHECK-NEXT: 1: CFGScopeEnd(i)
// CHECK-NEXT: 2: 1
// CHECK-NEXT: 3: int k = 1;
// CHECK-NEXT: 4: CFGScopeEnd(c)
// CHECK-NEXT: Preds (3): B3 B5 B6
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: CFGScopeBegin(c)
// CHECK-NEXT: 2: '1'
// CHECK-NEXT: 3: char c = '1';
// CHECK-NEXT: 4: CFGScopeBegin(i)
// CHECK-NEXT: 5: getX
// CHECK-NEXT: 6: [B2.5] (ImplicitCastExpr, FunctionToPointerDecay, int (*)(void))
// CHECK-NEXT: 7: [B2.6]()
// CHECK-NEXT: 8: int i = getX();
// CHECK-NEXT: 9: i
// CHECK-NEXT: 10: [B2.9] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: T: switch [B2.10]
// CHECK-NEXT: Preds (1): B8
// CHECK-NEXT: Succs (5): B4 B5 B6 B7 B3
// CHECK: [B3]
// CHECK-NEXT: default:
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: 0
// CHECK-NEXT: 3: int a = 0;
// CHECK-NEXT: 4: i
// CHECK-NEXT: 5: ++[B3.4]
// CHECK-NEXT: 6: CFGScopeEnd(a)
// CHECK-NEXT: Preds (2): B4 B2
// CHECK-NEXT: Succs (1): B1
// CHECK: [B4]
// CHECK-NEXT: case 3:
// CHECK-NEXT: 1: '2'
// CHECK-NEXT: 2: c
// CHECK-NEXT: 3: [B4.2] = [B4.1]
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B3
// CHECK: [B5]
// CHECK-NEXT: case 2:
// CHECK-NEXT: 1: '2'
// CHECK-NEXT: 2: c
// CHECK-NEXT: 3: [B5.2] = [B5.1]
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B1
// CHECK: [B6]
// CHECK-NEXT: case 1:
// CHECK-NEXT: 1: '3'
// CHECK-NEXT: 2: c
// CHECK-NEXT: 3: [B6.2] = [B6.1]
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (2): B2 B7
// CHECK-NEXT: Succs (1): B1
// CHECK: [B7]
// CHECK-NEXT: case 0:
// CHECK-NEXT: 1: '2'
// CHECK-NEXT: 2: c
// CHECK-NEXT: 3: [B7.2] = [B7.1]
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B6
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_switch_with_compound_with_default() {
char c = '1';
switch (int i = getX()) {
case 0:
c = '2';
case 1:
c = '3';
break;
case 2: {
c = '2';
break;
}
case 3:
c = '2';
default: {
int a = 0;
++i;
}
}
int k = 1;
}
// CHECK: [B6 (ENTRY)]
// CHECK-NEXT: Succs (1): B2
// CHECK: [B1]
// CHECK-NEXT: 1: CFGScopeEnd(i)
// CHECK-NEXT: 2: 3
// CHECK-NEXT: 3: int k = 3;
// CHECK-NEXT: 4: CFGScopeEnd(c)
// CHECK-NEXT: Preds (3): B3 B4 B2
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: CFGScopeBegin(c)
// CHECK-NEXT: 2: '1'
// CHECK-NEXT: 3: char c = '1';
// CHECK-NEXT: 4: CFGScopeBegin(i)
// CHECK-NEXT: 5: getX
// CHECK-NEXT: 6: [B2.5] (ImplicitCastExpr, FunctionToPointerDecay, int (*)(void))
// CHECK-NEXT: 7: [B2.6]()
// CHECK-NEXT: 8: int i = getX();
// CHECK-NEXT: 9: i
// CHECK-NEXT: 10: [B2.9] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: T: switch [B2.10]
// CHECK-NEXT: Preds (1): B6
// CHECK-NEXT: Succs (4): B3 B4 B5 B1
// CHECK: [B3]
// CHECK-NEXT: case 2:
// CHECK-NEXT: 1: '3'
// CHECK-NEXT: 2: c
// CHECK-NEXT: 3: [B3.2] = [B3.1]
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B1
// CHECK: [B4]
// CHECK-NEXT: case 1:
// CHECK-NEXT: 1: '1'
// CHECK-NEXT: 2: c
// CHECK-NEXT: 3: [B4.2] = [B4.1]
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (2): B2 B5
// CHECK-NEXT: Succs (1): B1
// CHECK: [B5]
// CHECK-NEXT: case 0:
// CHECK-NEXT: 1: '2'
// CHECK-NEXT: 2: c
// CHECK-NEXT: 3: [B5.2] = [B5.1]
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B4
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_switch_with_compound_without_default() {
char c = '1';
switch (int i = getX()) {
case 0:
c = '2';
case 1:
c = '1';
break;
case 2:
c = '3';
break;
}
int k = 3;
}
// CHECK: [B5 (ENTRY)]
// CHECK-NEXT: Succs (1): B2
// CHECK: [B1]
// CHECK-NEXT: 1: CFGScopeEnd(i)
// CHECK-NEXT: 2: 1
// CHECK-NEXT: 3: int k = 1;
// CHECK-NEXT: 4: CFGScopeEnd(s)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: CFGScopeBegin(s)
// CHECK-NEXT: 2: '1'
// CHECK-NEXT: 3: char s = '1';
// CHECK-NEXT: 4: CFGScopeBegin(i)
// CHECK-NEXT: 5: getX
// CHECK-NEXT: 6: [B2.5] (ImplicitCastExpr, FunctionToPointerDecay, int (*)(void))
// CHECK-NEXT: 7: [B2.6]()
// CHECK-NEXT: 8: int i = getX();
// CHECK-NEXT: 9: i
// CHECK-NEXT: 10: [B2.9] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: T: switch [B2.10]
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (2): B4 B3
// CHECK: [B3]
// CHECK-NEXT: default:
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: 0
// CHECK-NEXT: 3: int a = 0;
// CHECK-NEXT: 4: i
// CHECK-NEXT: 5: ++[B3.4]
// CHECK-NEXT: 6: CFGScopeEnd(a)
// CHECK-NEXT: Preds (2): B4 B2
// CHECK-NEXT: Succs (1): B1
// CHECK: [B4]
// CHECK-NEXT: case 0:
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B3
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_without_compound() {
char s = '1';
switch (int i = getX())
case 0:
default: {
int a = 0;
++i;
}
int k = 1;
}
// CHECK: [B12 (ENTRY)]
// CHECK-NEXT: Succs (1): B11
// CHECK: [B1]
// CHECK-NEXT: 1: CFGScopeEnd(i)
// CHECK-NEXT: Preds (2): B4 B10
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: i
// CHECK-NEXT: 2: ++[B2.1]
// CHECK-NEXT: Preds (2): B3 B7
// CHECK-NEXT: Succs (1): B10
// CHECK: [B3]
// CHECK-NEXT: 1: CFGScopeEnd(z)
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: CFGScopeBegin(z)
// CHECK-NEXT: 2: 5
// CHECK-NEXT: 3: int z = 5;
// CHECK-NEXT: 4: CFGScopeEnd(z)
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (2): B6 B8
// CHECK-NEXT: Succs (1): B1
// CHECK: [B5]
// CHECK-NEXT: 1: x
// CHECK-NEXT: 2: [B5.1] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: T: switch [B5.2]
// CHECK-NEXT: Preds (1): B10
// CHECK-NEXT: Succs (4): B7 B8 B9 B6
// CHECK: [B6]
// CHECK-NEXT: default:
// CHECK-NEXT: 1: 3
// CHECK-NEXT: 2: y
// CHECK-NEXT: 3: [B6.2] = [B6.1]
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B4
// CHECK: [B7]
// CHECK-NEXT: case 2:
// CHECK-NEXT: 1: 4
// CHECK-NEXT: 2: y
// CHECK-NEXT: 3: [B7.2] = [B7.1]
// CHECK-NEXT: T: continue;
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B2
// CHECK: [B8]
// CHECK-NEXT: case 1:
// CHECK-NEXT: 1: 2
// CHECK-NEXT: 2: y
// CHECK-NEXT: 3: [B8.2] = [B8.1]
// CHECK-NEXT: T: break;
// CHECK-NEXT: Preds (2): B5 B9
// CHECK-NEXT: Succs (1): B4
// CHECK: [B9]
// CHECK-NEXT: case 0:
// CHECK-NEXT: 1: 1
// CHECK-NEXT: 2: y
// CHECK-NEXT: 3: [B9.2] = [B9.1]
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B8
// CHECK: [B10]
// CHECK-NEXT: 1: i
// CHECK-NEXT: 2: [B10.1] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: 3: 1000
// CHECK-NEXT: 4: [B10.2] < [B10.3]
// CHECK-NEXT: T: for (...; [B10.4]; ...)
// CHECK-NEXT: Preds (2): B2 B11
// CHECK-NEXT: Succs (2): B5 B1
// CHECK: [B11]
// CHECK-NEXT: 1: CFGScopeBegin(i)
// CHECK-NEXT: 2: int i;
// CHECK-NEXT: 3: int x;
// CHECK-NEXT: 4: int y;
// CHECK-NEXT: 5: 0
// CHECK-NEXT: 6: i
// CHECK-NEXT: 7: [B11.6] = [B11.5]
// CHECK-NEXT: Preds (1): B12
// CHECK-NEXT: Succs (1): B10
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_for_switch_in_for() {
int i, x, y;
for (i = 0; i < 1000; ++i) {
switch (x) {
case 0:
y = 1;
case 1:
y = 2;
break; // break from switch
case 2:
y = 4;
continue; // continue in loop
default:
y = 3;
}
{
int z = 5;
break; // break from loop
}
}
}
// CHECK: [B4 (ENTRY)]
// CHECK-NEXT: Succs (1): B3
// CHECK: [B1]
// CHECK-NEXT: label:
// CHECK-NEXT: 1: CFGScopeEnd(n2t)
// CHECK-NEXT: 2: CFGScopeEnd(n1t)
// CHECK-NEXT: 3: [B3.3].~A() (Implicit destructor)
// CHECK-NEXT: 4: CFGScopeEnd(a)
// CHECK-NEXT: Preds (2): B2 B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: [B3.9].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(n2s)
// CHECK-NEXT: 3: [B3.6].~A() (Implicit destructor)
// CHECK-NEXT: 4: CFGScopeEnd(n1s)
// CHECK-NEXT: 5: CFGScopeBegin(n1t)
// CHECK-NEXT: 6: int n1t;
// CHECK-NEXT: 7: CFGScopeBegin(n2t)
// CHECK-NEXT: 8: int n2t;
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B3.3], A)
// CHECK-NEXT: 3: A a;
// CHECK-NEXT: 4: CFGScopeBegin(n1s)
// CHECK-NEXT: 5: (CXXConstructExpr, [B3.6], A)
// CHECK-NEXT: 6: A n1s;
// CHECK-NEXT: 7: CFGScopeBegin(n2s)
// CHECK-NEXT: 8: (CXXConstructExpr, [B3.9], A)
// CHECK-NEXT: 9: A n2s;
// CHECK-NEXT: 10: [B3.9].~A() (Implicit destructor)
// CHECK-NEXT: 11: CFGScopeEnd(n2s)
// CHECK-NEXT: 12: [B3.6].~A() (Implicit destructor)
// CHECK-NEXT: 13: CFGScopeEnd(n1s)
// CHECK-NEXT: 14: CFGScopeBegin(n1t)
// CHECK-NEXT: 15: CFGScopeBegin(n2t)
// CHECK-NEXT: T: goto label;
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (1): B1
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_goto_multiple_scopes() {
A a;
{
A n1s;
{
A n2s;
goto label;
}
}
{
int n1t;
{
int n2t;
label:
}
}
}
// CHECK: [B5 (ENTRY)]
// CHECK-NEXT: Succs (1): B3
// CHECK: [B1]
// CHECK-NEXT: 1: [B2.8].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(n2s)
// CHECK-NEXT: 3: [B2.5].~A() (Implicit destructor)
// CHECK-NEXT: 4: CFGScopeEnd(n1s)
// CHECK-NEXT: 5: [B3.3].~A() (Implicit destructor)
// CHECK-NEXT: 6: CFGScopeEnd(a)
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: label:
// CHECK-NEXT: 1: CFGScopeEnd(n2t)
// CHECK-NEXT: 2: CFGScopeEnd(n1t)
// CHECK-NEXT: 3: CFGScopeBegin(n1s)
// CHECK-NEXT: 4: (CXXConstructExpr, [B2.5], A)
// CHECK-NEXT: 5: A n1s;
// CHECK-NEXT: 6: CFGScopeBegin(n2s)
// CHECK-NEXT: 7: (CXXConstructExpr, [B2.8], A)
// CHECK-NEXT: 8: A n2s;
// CHECK-NEXT: Preds (2): B3 B4
// CHECK-NEXT: Succs (1): B4
// CHECK: [B3]
// CHECK-NEXT: 1: CFGScopeBegin(a)
// CHECK-NEXT: 2: (CXXConstructExpr, [B3.3], A)
// CHECK-NEXT: 3: A a;
// CHECK-NEXT: 4: CFGScopeBegin(n1t)
// CHECK-NEXT: 5: int n1t;
// CHECK-NEXT: 6: CFGScopeBegin(n2t)
// CHECK-NEXT: 7: int n2t;
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B2
// CHECK: [B4]
// CHECK-NEXT: 1: [B2.8].~A() (Implicit destructor)
// CHECK-NEXT: 2: CFGScopeEnd(n2s)
// CHECK-NEXT: 3: [B2.5].~A() (Implicit destructor)
// CHECK-NEXT: 4: CFGScopeEnd(n1s)
// CHECK-NEXT: 5: CFGScopeBegin(n1t)
// CHECK-NEXT: 6: CFGScopeBegin(n2t)
// CHECK-NEXT: T: goto label;
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B2
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_backpatched_goto_multiple_scopes() {
A a;
{
int n1t;
{
int n2t;
label:
}
}
{
A n1s;
{
A n2s;
goto label;
}
}
}
// CHECK: [B8 (ENTRY)]
// CHECK-NEXT: Succs (1): B7
// CHECK: [B1]
// CHECK-NEXT: label:
// CHECK-NEXT: 1: CFGScopeEnd(n2t)
// CHECK-NEXT: 2: CFGScopeEnd(n1t)
// CHECK-NEXT: Preds (4): B2 B3 B4 B6
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: T: goto label;
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B1
// CHECK: [B3]
// CHECK-NEXT: 1: CFGScopeBegin(n2t)
// CHECK-NEXT: 2: int n2t;
// CHECK-NEXT: 3: UV
// CHECK-NEXT: 4: [B3.3] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B3.4]
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (2): B2 B1
// CHECK: [B4]
// CHECK-NEXT: 1: CFGScopeBegin(n2t)
// CHECK-NEXT: T: goto label;
// CHECK-NEXT: Preds (1): B5
// CHECK-NEXT: Succs (1): B1
// CHECK: [B5]
// CHECK-NEXT: 1: CFGScopeBegin(n1t)
// CHECK-NEXT: 2: int n1t;
// CHECK-NEXT: 3: UV
// CHECK-NEXT: 4: [B5.3] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B5.4]
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (2): B4 B3
// CHECK: [B6]
// CHECK-NEXT: 1: CFGScopeBegin(n1t)
// CHECK-NEXT: 2: CFGScopeBegin(n2t)
// CHECK-NEXT: T: goto label;
// CHECK-NEXT: Preds (1): B7
// CHECK-NEXT: Succs (1): B1
// CHECK: [B7]
// CHECK-NEXT: 1: UV
// CHECK-NEXT: 2: [B7.1] (ImplicitCastExpr, LValueToRValue, _Bool)
// CHECK-NEXT: T: if [B7.2]
// CHECK-NEXT: Preds (1): B8
// CHECK-NEXT: Succs (2): B6 B5
// CHECK: [B0 (EXIT)]
// CHECK-NEXT: Preds (1): B1
void test_multiple_goto_entering_scopes() {
if (UV) goto label;
{
int n1t;
if (UV) goto label;
{
int n2t;
if (UV) goto label;
label:
}
}
}
// CHECK: [B1]
// CHECK-NEXT: 1: CFGScopeBegin(i)
// CHECK-NEXT: 2: int i __attribute__((cleanup(cleanup_int)));
// CHECK-NEXT: 3: CleanupFunction (cleanup_int)
// CHECK-NEXT: 4: CFGScopeEnd(i)
void cleanup_int(int *i);
void test_cleanup_functions() {
int i __attribute__((cleanup(cleanup_int)));
}
// CHECK: [B1]
// CHECK-NEXT: 1: 10
// CHECK-NEXT: 2: i
// CHECK-NEXT: 3: [B1.2] = [B1.1]
// CHECK-NEXT: 4: return;
// CHECK-NEXT: 5: CleanupFunction (cleanup_int)
// CHECK-NEXT: 6: CFGScopeEnd(i)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B2]
// CHECK-NEXT: 1: return;
// CHECK-NEXT: 2: CleanupFunction (cleanup_int)
// CHECK-NEXT: 3: CFGScopeEnd(i)
// CHECK-NEXT: Preds (1): B3
// CHECK-NEXT: Succs (1): B0
// CHECK: [B3]
// CHECK-NEXT: 1: CFGScopeBegin(i)
// CHECK-NEXT: 2: int i __attribute__((cleanup(cleanup_int)));
// CHECK-NEXT: 3: m
// CHECK-NEXT: 4: [B3.3] (ImplicitCastExpr, LValueToRValue, int)
// CHECK-NEXT: 5: 1
// CHECK-NEXT: 6: [B3.4] == [B3.5]
// CHECK-NEXT: T: if [B3.6]
// CHECK-NEXT: Preds (1): B4
// CHECK-NEXT: Succs (2): B2 B1
void test_cleanup_functions2(int m) {
int i __attribute__((cleanup(cleanup_int)));
if (m == 1) {
return;
}
i = 10;
return;
}
// CHECK: [B1]
// CHECK-NEXT: 1: CFGScopeBegin(f)
// CHECK-NEXT: 2: (CXXConstructExpr, [B1.3], F)
// CHECK-NEXT: 3: F f __attribute__((cleanup(cleanup_F)));
// CHECK-NEXT: 4: CleanupFunction (cleanup_F)
// CHECK-NEXT: 5: [B1.3].~F() (Implicit destructor)
// CHECK-NEXT: 6: CFGScopeEnd(f)
// CHECK-NEXT: Preds (1): B2
// CHECK-NEXT: Succs (1): B0
class F {
public:
~F();
};
void cleanup_F(F *f);
void test() {
F f __attribute((cleanup(cleanup_F)));
}
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