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llvm-project/clang/test/AST/ast-dump-stmt.cpp
YexuanXiao 7c402b8b81
Reland [Clang] Make the SizeType, SignedSizeType and PtrdiffType be named sugar types (#149613) 
The checks for the 'z' and 't' format specifiers added in the original
PR #143653 had some issues and were overly strict, causing some build
failures and were consequently reverted at
4c85bf2fe8.

In the latest commit
27c58629ec,
I relaxed the checks for the 'z' and 't' format specifiers, so warnings
are now only issued when they are used with mismatched types.

The original intent of these checks was to diagnose code that assumes
the underlying type of `size_t` is `unsigned` or `unsigned long`, for
example:

```c
printf("%zu", 1ul); // Not portable, but not an error when size_t is unsigned long
```  

However, it produced a significant number of false positives. This was
partly because Clang does not treat the `typedef` `size_t` and
`__size_t` as having a common "sugar" type, and partly because a large
amount of existing code either assumes `unsigned` (or `unsigned long`)
is `size_t`, or they define the equivalent of size_t in their own way
(such as
sanitizer_internal_defs.h).2e67dcfdcd/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h (L203)
2025-07-19 03:44:14 -03:00

293 lines
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// Test without serialization:
// RUN: %clang_cc1 -std=c++23 -triple x86_64-linux-gnu -fcxx-exceptions -ast-dump %s \
// RUN: | FileCheck -strict-whitespace %s
//
// Test with serialization:
// RUN: %clang_cc1 -std=c++23 -triple x86_64-linux-gnu -fcxx-exceptions -emit-pch -o %t %s
// RUN: %clang_cc1 -x c++ -std=c++23 -triple x86_64-linux-gnu -fcxx-exceptions -include-pch %t -ast-dump-all /dev/null \
// RUN: | sed -e "s/ <undeserialized declarations>//" -e "s/ imported//" \
// RUN: | FileCheck -strict-whitespace %s
namespace n {
void function() {}
int Variable;
}
using n::function;
using n::Variable;
void TestFunction() {
void (*f)() = &function;
// CHECK: DeclRefExpr{{.*}} (UsingShadow{{.*}}function
Variable = 4;
// CHECK: DeclRefExpr{{.*}} (UsingShadow{{.*}}Variable
}
// CHECK: FunctionDecl {{.*}} TestCatch1
void TestCatch1() {
// CHECK: CXXTryStmt
// CHECK-NEXT: CompoundStmt
try {
}
// CHECK-NEXT: CXXCatchStmt
// CHECK-NEXT: VarDecl {{.*}} x
// CHECK-NEXT: CompoundStmt
catch (int x) {
}
}
// CHECK: FunctionDecl {{.*}} TestCatch2
void TestCatch2() {
// CHECK: CXXTryStmt
// CHECK-NEXT: CompoundStmt
try {
}
// CHECK-NEXT: CXXCatchStmt
// CHECK-NEXT: NULL
// CHECK-NEXT: CompoundStmt
catch (...) {
}
}
void TestAllocationExprs() {
int *p;
p = new int;
delete p;
p = new int[2];
delete[] p;
p = ::new int;
::delete p;
}
// CHECK: FunctionDecl {{.*}} TestAllocationExprs
// CHECK: CXXNewExpr {{.*}} 'int *' Function {{.*}} 'operator new'
// CHECK: CXXDeleteExpr {{.*}} 'void' Function {{.*}} 'operator delete'
// CHECK: CXXNewExpr {{.*}} 'int *' array Function {{.*}} 'operator new[]'
// CHECK: CXXDeleteExpr {{.*}} 'void' array Function {{.*}} 'operator delete[]'
// CHECK: CXXNewExpr {{.*}} 'int *' global Function {{.*}} 'operator new'
// CHECK: CXXDeleteExpr {{.*}} 'void' global Function {{.*}} 'operator delete'
// Don't crash on dependent exprs that haven't been resolved yet.
template <typename T>
void TestDependentAllocationExpr() {
T *p = new T;
delete p;
}
// CHECK: FunctionTemplateDecl {{.*}} TestDependentAllocationExpr
// CHECK: CXXNewExpr {{.*'T \*'$}}
// CHECK: CXXDeleteExpr {{.*'void'$}}
template <typename T>
class DependentScopeMemberExprWrapper {
T member;
};
template <typename T>
void TestDependentScopeMemberExpr() {
DependentScopeMemberExprWrapper<T> obj;
obj.member = T();
(&obj)->member = T();
}
// CHECK: FunctionTemplateDecl {{.*}} TestDependentScopeMemberExpr
// CHECK: CXXDependentScopeMemberExpr {{.*}} lvalue .member
// CHECK: CXXDependentScopeMemberExpr {{.*}} lvalue ->member
union U {
int i;
long l;
};
void TestUnionInitList()
{
U us[3] = {1};
// CHECK: VarDecl {{.+}} <col:3, col:15> col:5 us 'U[3]' cinit
// CHECK-NEXT: `-InitListExpr {{.+}} <col:13, col:15> 'U[3]'
// CHECK-NEXT: |-array_filler: InitListExpr {{.+}} <col:15> 'U' field Field {{.+}} 'i' 'int'
// CHECK-NEXT: `-InitListExpr {{.+}} <col:14> 'U' field Field {{.+}} 'i' 'int'
// CHECK-NEXT: `-IntegerLiteral {{.+}} <col:14> 'int' 1
}
void TestSwitch(int i) {
switch (int a; i)
;
// CHECK: SwitchStmt 0x{{[^ ]*}} <line:[[@LINE-2]]:3, line:[[@LINE-1]]:5> has_init
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:11, col:15> col:15 a 'int'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:18> 'int' lvalue ParmVar 0x{{[^ ]*}} 'i' 'int'
// CHECK-NEXT: NullStmt
}
void TestIf(bool b) {
if (int i = 12; b)
;
// CHECK: IfStmt 0x{{[^ ]*}} <line:[[@LINE-2]]:3, line:[[@LINE-1]]:5> has_init
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:7, col:15> col:11 i 'int' cinit
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:15> 'int' 12
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:19> 'bool' lvalue ParmVar 0x{{[^ ]*}} 'b' 'bool'
// CHECK-NEXT: NullStmt
if constexpr (sizeof(b) == 1)
;
// CHECK: IfStmt 0x{{[^ ]*}} <line:[[@LINE-2]]:3, line:[[@LINE-1]]:5>
// CHECK-NEXT: ConstantExpr 0x{{[^ ]*}} <line:[[@LINE-3]]:17, col:30> 'bool'
// CHECK-NEXT: value: Int 1
// CHECK-NEXT: BinaryOperator
// CHECK-NEXT: UnaryExprOrTypeTraitExpr
// CHECK-NEXT: ParenExpr
// CHECK-NEXT: DeclRefExpr
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: IntegerLiteral
// CHECK-NEXT: NullStmt
if constexpr (sizeof(b) == 1)
;
else
;
// CHECK: IfStmt 0x{{[^ ]*}} <line:[[@LINE-4]]:3, line:[[@LINE-1]]:5> has_else
// CHECK-NEXT: ConstantExpr 0x{{[^ ]*}} <line:[[@LINE-5]]:17, col:30> 'bool'
// CHECK-NEXT: value: Int 1
// CHECK-NEXT: BinaryOperator
// CHECK-NEXT: UnaryExprOrTypeTraitExpr
// CHECK-NEXT: ParenExpr
// CHECK-NEXT: DeclRefExpr
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: IntegerLiteral
// CHECK-NEXT: NullStmt
// CHECK-NEXT: NullStmt
if consteval {}
// CHECK: IfStmt 0x{{[^ ]*}} <line:[[@LINE-1]]:3, col:17> consteval
// CHECK-NEXT: CompoundStmt
if ! consteval {}
else {}
// CHECK: IfStmt 0x{{[^ ]*}} <line:[[@LINE-2]]:3, line:[[@LINE-1]]:9> has_else !consteval
// CHECK-NEXT: CompoundStmt
// CHECK-NEXT: CompoundStmt
}
struct Container {
int *begin() const;
int *end() const;
};
void TestIteration() {
for (int i = 0; int j = i; ++i)
;
// CHECK: ForStmt 0x{{[^ ]*}} <line:[[@LINE-2]]:3, line:[[@LINE-1]]:5>
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:8, col:16> col:12 used i 'int' cinit
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:16> 'int' 0
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:19, col:27> col:23 used j 'int' cinit
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:27> 'int' lvalue Var 0x{{[^ ]*}} 'i' 'int'
// CHECK-NEXT: ImplicitCastExpr 0x{{[^ ]*}} <col:23> 'bool' <IntegralToBoolean>
// CHECK-NEXT: ImplicitCastExpr 0x{{[^ ]*}} <col:23> 'int' <LValueToRValue>
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:23> 'int' lvalue Var 0x{{[^ ]*}} 'j' 'int'
// CHECK-NEXT: UnaryOperator 0x{{[^ ]*}} <col:30, col:32> 'int' lvalue prefix '++'
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:32> 'int' lvalue Var 0x{{[^ ]*}} 'i' 'int'
// CHECK-NEXT: NullStmt
int vals[10];
for (int v : vals)
;
// CHECK: CXXForRangeStmt 0x{{[^ ]*}} <line:[[@LINE-2]]:3, line:[[@LINE-1]]:5>
// CHECK-NEXT: <<<NULL>>>
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:16> col:16 implicit used __range1 'int (&)[10]' cinit
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:16> 'int[10]' lvalue Var 0x{{[^ ]*}} 'vals' 'int[10]'
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:14> col:14 implicit used __begin1 'int *' cinit
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'int[10]' lvalue Var 0x{{[^ ]*}} '__range1' 'int (&)[10]'
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:14, col:16> col:14 implicit used __end1 'int *' cinit
// CHECK-NEXT: BinaryOperator 0x{{[^ ]*}} <col:14, col:16> 'int *' '+'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'int[10]' lvalue Var 0x{{[^ ]*}} '__range1' 'int (&)[10]'
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:16> '__ptrdiff_t':'long' 10
// CHECK-NEXT: BinaryOperator 0x{{[^ ]*}} <col:14> 'bool' '!='
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'int *' lvalue Var 0x{{[^ ]*}} '__begin1' 'int *'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'int *' lvalue Var 0x{{[^ ]*}} '__end1' 'int *'
// CHECK-NEXT: UnaryOperator 0x{{[^ ]*}} <col:14> 'int *' lvalue prefix '++'
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'int *' lvalue Var 0x{{[^ ]*}} '__begin1' 'int *'
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:8, col:14> col:12 v 'int' cinit
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: UnaryOperator 0x{{[^ ]*}} <col:14> 'int' lvalue prefix '*' cannot overflow
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'int *' lvalue Var 0x{{[^ ]*}} '__begin1' 'int *'
// CHECK-NEXT: NullStmt
Container C;
for (int v : C)
;
// CHECK: CXXForRangeStmt 0x{{[^ ]*}} <line:[[@LINE-2]]:3, line:[[@LINE-1]]:5>
// CHECK-NEXT: <<<NULL>>>
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:16> col:16 implicit used __range1 'Container &' cinit
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:16> 'Container' lvalue Var 0x{{[^ ]*}} 'C' 'Container'
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:14> col:14 implicit used __begin1 'int *' cinit
// CHECK-NEXT: CXXMemberCallExpr 0x{{[^ ]*}} <col:14> 'int *'
// CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:14> '<bound member function type>' .begin 0x{{[^ ]*}}
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'Container' lvalue Var 0x{{[^ ]*}} '__range1' 'Container &'
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:14> col:14 implicit used __end1 'int *' cinit
// CHECK-NEXT: CXXMemberCallExpr 0x{{[^ ]*}} <col:14> 'int *'
// CHECK-NEXT: MemberExpr 0x{{[^ ]*}} <col:14> '<bound member function type>' .end 0x{{[^ ]*}}
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'Container' lvalue Var 0x{{[^ ]*}} '__range1' 'Container &'
// CHECK-NEXT: BinaryOperator 0x{{[^ ]*}} <col:14> 'bool' '!='
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'int *' lvalue Var 0x{{[^ ]*}} '__begin1' 'int *'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'int *' lvalue Var 0x{{[^ ]*}} '__end1' 'int *'
// CHECK-NEXT: UnaryOperator 0x{{[^ ]*}} <col:14> 'int *' lvalue prefix '++'
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'int *' lvalue Var 0x{{[^ ]*}} '__begin1' 'int *'
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:8, col:14> col:12 v 'int' cinit
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: UnaryOperator 0x{{[^ ]*}} <col:14> 'int' lvalue prefix '*' cannot overflow
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:14> 'int *' lvalue Var 0x{{[^ ]*}} '__begin1' 'int *'
// CHECK-NEXT: NullStmt
for (int a; int v : vals)
;
// CHECK: CXXForRangeStmt 0x{{[^ ]*}} <line:[[@LINE-2]]:3, line:[[@LINE-1]]:5>
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:8, col:12> col:12 a 'int'
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:23> col:23 implicit used __range1 'int (&)[10]' cinit
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:23> 'int[10]' lvalue Var 0x{{[^ ]*}} 'vals' 'int[10]'
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:21> col:21 implicit used __begin1 'int *' cinit
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:21> 'int[10]' lvalue Var 0x{{[^ ]*}} '__range1' 'int (&)[10]'
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:21, col:23> col:21 implicit used __end1 'int *' cinit
// CHECK-NEXT: BinaryOperator 0x{{[^ ]*}} <col:21, col:23> 'int *' '+'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:21> 'int[10]' lvalue Var 0x{{[^ ]*}} '__range1' 'int (&)[10]'
// CHECK-NEXT: IntegerLiteral 0x{{[^ ]*}} <col:23> '__ptrdiff_t':'long' 10
// CHECK-NEXT: BinaryOperator 0x{{[^ ]*}} <col:21> 'bool' '!='
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:21> 'int *' lvalue Var 0x{{[^ ]*}} '__begin1' 'int *'
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:21> 'int *' lvalue Var 0x{{[^ ]*}} '__end1' 'int *'
// CHECK-NEXT: UnaryOperator 0x{{[^ ]*}} <col:21> 'int *' lvalue prefix '++'
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:21> 'int *' lvalue Var 0x{{[^ ]*}} '__begin1' 'int *'
// CHECK-NEXT: DeclStmt
// CHECK-NEXT: VarDecl 0x{{[^ ]*}} <col:15, col:21> col:19 v 'int' cinit
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: UnaryOperator 0x{{[^ ]*}} <col:21> 'int' lvalue prefix '*' cannot overflow
// CHECK-NEXT: ImplicitCastExpr
// CHECK-NEXT: DeclRefExpr 0x{{[^ ]*}} <col:21> 'int *' lvalue Var 0x{{[^ ]*}} '__begin1' 'int *'
// CHECK-NEXT: NullStmt
}
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