llvm-for-llvmta/tools/clang/test/AST/ast-dump-expr.c

349 lines
15 KiB
C

// Test without serialization:
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -Wno-unused-value -std=gnu11 -ast-dump %s \
// RUN: | FileCheck --strict-whitespace %s
//
// Test with serialization:
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -Wno-unused-value -std=gnu11 -emit-pch -o %t %s
// RUN: %clang_cc1 -x c -triple x86_64-unknown-unknown -Wno-unused-value -std=gnu11 \
// RUN: -include-pch %t -ast-dump-all /dev/null \
// RUN: | sed -e "s/ <undeserialized declarations>//" -e "s/ imported//" \
// RUN: | FileCheck --strict-whitespace %s
void Comma(void) {
1, 2, 3;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:9> 'int' ','
// CHECK-NEXT: BinaryOperator 0x{{[^ ]*}} <col:3, col:6> 'int' ','
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:3> 'int' 1
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:6> 'int' 2
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:9> 'int' 3
}
void Assignment(int a) {
a = 12;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> 'int' '='
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:7> 'int' 12
a += a;
// CHECK: CompoundAssignOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:8> 'int' '+=' ComputeLHSTy='int' ComputeResultTy='int'
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:8> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
}
void Conditionals(int a) {
a ? 0 : 1;
// CHECK: ConditionalOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:11> 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:7> 'int' 0
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:11> 'int' 1
a ?: 0;
// CHECK: BinaryConditionalOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:8> 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: OpaqueValueExpr 0x{{[^ ]*}} <col:3> 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: OpaqueValueExpr 0x{{[^ ]*}} <col:3> 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:8> 'int' 0
}
void BinaryOperators(int a, int b) {
// Logical operators
a || b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:8> 'int' '||'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:8> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
a && b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:8> 'int' '&&'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:8> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
// Bitwise operators
a | b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> 'int' '|'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:7> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
a ^ b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> 'int' '^'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:7> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
a & b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> 'int' '&'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:7> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
// Equality operators
a == b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:8> 'int' '=='
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:8> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
a != b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:8> 'int' '!='
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:8> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
// Relational operators
a < b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> 'int' '<'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:7> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
a > b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> 'int' '>'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:7> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
a <= b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:8> 'int' '<='
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:8> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
a >= b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:8> 'int' '>='
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:8> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
// Bit shifting operators
a << b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:8> 'int' '<<'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:8> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
a >> b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:8> 'int' '>>'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:8> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
// Additive operators
a + b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> 'int' '+'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:7> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
a - b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> 'int' '-'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:7> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
// Multiplicative operators
a * b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> 'int' '*'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:7> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
a / b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> 'int' '/'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:7> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
a % b;
// CHECK: BinaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:7> 'int' '%'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:7> 'int' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int'
}
void UnaryOperators(int a, int *b) {
// Cast operators
(float)a;
// CHECK: CStyleCastExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:10> 'float' <IntegralToFloating>
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:10> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// ++, --, and ~ are covered elsewhere.
-a;
// CHECK: UnaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:4> 'int' prefix '-'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:4> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
+a;
// CHECK: UnaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:4> 'int' prefix '+' cannot overflow
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:4> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
&a;
// CHECK: UnaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:4> 'int *' prefix '&' cannot overflow
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:4> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
*b;
// CHECK: ImplicitCastExpr
// CHECK-NEXT: UnaryOperator 0x{{[^ ]*}} <col:3, col:4> 'int' lvalue prefix '*' cannot overflow
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:4> 'int *' lvalue ParmVar 0x{{[^ ]*}} 'b' 'int *'
!a;
// CHECK: UnaryOperator 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:4> 'int' prefix '!' cannot overflow
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:4> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
sizeof a;
// CHECK: UnaryExprOrTypeTraitExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:10> 'unsigned long' sizeof
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:10> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
sizeof(int);
// CHECK: UnaryExprOrTypeTraitExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:13> 'unsigned long' sizeof 'int'
_Alignof(int);
// FIXME: Uses C++ spelling for alignof in C mode.
// CHECK: UnaryExprOrTypeTraitExpr 0x{{[^ ]*}} <line:[[@LINE-2]]:3, col:15> 'unsigned long' alignof 'int'
}
struct S {
int a;
};
void PostfixOperators(int *a, struct S b, struct S *c) {
a[0];
// CHECK: ImplicitCastExpr
// CHECK-NEXT: ArraySubscriptExpr 0x{{[^ ]*}} <col:3, col:6> 'int' lvalue
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int *' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int *'
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:5> 'int' 0
UnaryOperators(*a, a);
// CHECK: CallExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:23> 'void'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'void (int, int *)' Function 0x{{[^ ]*}} 'UnaryOperators' 'void (int, int *)'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: UnaryOperator 0x{{[^ ]*}} <col:18, col:19> 'int' lvalue prefix '*' cannot overflow
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:19> 'int *' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int *'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:22> 'int *' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int *'
b.a;
// CHECK: ImplicitCastExpr
// CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:3, col:5> 'int' lvalue .a 0x{{[^ ]*}}
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'struct S':'struct S' lvalue ParmVar 0x{{[^ ]*}} 'b' 'struct S':'struct S'
c->a;
// CHECK: ImplicitCastExpr
// CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:3, col:6> 'int' lvalue ->a 0x{{[^ ]*}}
// CHECK: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'struct S *' lvalue ParmVar 0x{{[^ ]*}} 'c' 'struct S *'
// Postfix ++ and -- are covered elsewhere.
(int [4]){1, 2, 3, 4, };
// CHECK: ImplicitCastExpr
// CHECK-NEXT: CompoundLiteralExpr 0x{{[^ ]*}} <col:3, col:25> 'int [4]' lvalue
// CHECK-NEXT: InitListExpr 0x{{[^ ]*}} <col:12, col:25> 'int [4]'
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:13> 'int' 1
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:16> 'int' 2
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:19> 'int' 3
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:22> 'int' 4
(struct S){1};
// CHECK: ImplicitCastExpr
// CHECK-NEXT: CompoundLiteralExpr 0x{{[^ ]*}} <col:3, col:15> 'struct S':'struct S' lvalue
// CHECK-NEXT: InitListExpr 0x{{[^ ]*}} <col:13, col:15> 'struct S':'struct S'
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:14> 'int' 1
}
enum E { One };
void PrimaryExpressions(int a) {
a;
// CHECK: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:3> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
'a';
// CHECK: CharacterLiteral 0x{{[^ ]*}} <line:[[@LINE-1]]:3> 'int' 97
L'a';
// CHECK: CharacterLiteral 0x{{[^ ]*}} <line:[[@LINE-1]]:3> 'int' 97
"a";
// ImplicitCastExpr
// CHECK: StringLiteral 0x{{[^ ]*}} <col:3> 'char [2]' lvalue "a"
L"a";
// ImplicitCastExpr
// CHECK: StringLiteral 0x{{[^ ]*}} <col:3> 'int [2]' lvalue L"a"
u8"a";
// ImplicitCastExpr
// CHECK: StringLiteral 0x{{[^ ]*}} <col:3> 'char [2]' lvalue u8"a"
U"a";
// ImplicitCastExpr
// CHECK: StringLiteral 0x{{[^ ]*}} <col:3> 'unsigned int [2]' lvalue U"a"
u"a";
// ImplicitCastExpr
// CHECK: StringLiteral 0x{{[^ ]*}} <col:3> 'unsigned short [2]' lvalue u"a"
1;
// CHECK: IntegerLiteral 0x{{[^ ]*}} <line:[[@LINE-1]]:3> 'int' 1
1u;
// CHECK: IntegerLiteral 0x{{[^ ]*}} <line:[[@LINE-1]]:3> 'unsigned int' 1
1ll;
// CHECK: IntegerLiteral 0x{{[^ ]*}} <line:[[@LINE-1]]:3> 'long long' 1
1.0;
// CHECK: FloatingLiteral 0x{{[^ ]*}} <line:[[@LINE-1]]:3> 'double' {{1\.[0]*e[\+]?[0]+}}
1.0f;
// CHECK: FloatingLiteral 0x{{[^ ]*}} <line:[[@LINE-1]]:3> 'float' {{1\.[0]*e[\+]?[0]+}}
1.0l;
// CHECK: FloatingLiteral 0x{{[^ ]*}} <line:[[@LINE-1]]:3> 'long double' {{1\.[0]*e[\+]?[0]+}}
One;
// CHECK: DeclRefExpr 0x{{[^ ]*}} <line:[[@LINE-1]]:3> 'int' EnumConstant 0x{{[^ ]*}} 'One' 'int'
(a);
// CHECK: ImplicitCastExpr
// CHECK-NEXT: ParenExpr 0x{{[^ ]*}} <col:3, col:5> 'int' lvalue
// CHECK: DeclRefExpr 0x{{[^ ]*}} <col:4> 'int' lvalue ParmVar 0x{{[^ ]*}} 'a' 'int'
// Generic selection expressions are covered elsewhere.
}