1 // RUN: %clang_cc1 %s -ast-dump | FileCheck %s 2 // RUN: %clang_cc1 -fexperimental-late-parse-attributes %s -ast-dump | FileCheck %s 3 4 #define __counted_by(f) __attribute__((counted_by(f))) 5 6 struct size_unknown; 7 struct size_known { 8 int field; 9 }; 10 11 //============================================================================== 12 // __counted_by on struct member pointer in decl attribute position 13 //============================================================================== 14 15 // CHECK-LABEL: RecordDecl {{.+}} struct on_member_pointer_complete_ty definition 16 // CHECK-NEXT: |-FieldDecl {{.+}} referenced count 'int' 17 // CHECK-NEXT: `-FieldDecl {{.+}} buf 'struct size_known * __counted_by(count)':'struct size_known *' 18 struct on_member_pointer_complete_ty { 19 int count; 20 struct size_known * buf __counted_by(count); 21 }; 22 23 // CHECK-LABEL: RecordDecl {{.+}} struct on_pointer_anon_buf definition 24 // CHECK-NEXT: |-FieldDecl {{.+}} referenced count 'int' 25 // CHECK-NEXT: |-RecordDecl {{.+}} struct definition 26 // CHECK-NEXT: | `-FieldDecl {{.+}} buf 'struct size_known * __counted_by(count)':'struct size_known *' 27 // CHECK-NEXT: |-FieldDecl {{.+}} implicit 'struct on_pointer_anon_buf::(anonymous at [[ANON_STRUCT_PATH:.+]])' 28 // CHECK-NEXT: `-IndirectFieldDecl {{.+}} implicit buf 'struct size_known * __counted_by(count)':'struct size_known *' 29 // CHECK-NEXT: |-Field {{.+}} field_index 1 'struct on_pointer_anon_buf::(anonymous at [[ANON_STRUCT_PATH]])' 30 // CHECK-NEXT: `-Field {{.+}} 'buf' 'struct size_known * __counted_by(count)':'struct size_known *' 31 struct on_pointer_anon_buf { 32 int count; 33 struct { 34 struct size_known *buf __counted_by(count); 35 }; 36 }; 37 38 struct on_pointer_anon_count { 39 struct { 40 int count; 41 }; 42 struct size_known *buf __counted_by(count); 43 }; 44 45 //============================================================================== 46 // __counted_by on struct member pointer in type attribute position 47 //============================================================================== 48 // TODO: Correctly parse counted_by as a type attribute. Currently it is parsed 49 // as a declaration attribute 50 51 // CHECK-LABEL: RecordDecl {{.+}} struct on_member_pointer_complete_ty_ty_pos definition 52 // CHECK-NEXT: |-FieldDecl {{.+}} referenced count 'int' 53 // CHECK-NEXT: `-FieldDecl {{.+}} buf 'struct size_known * __counted_by(count)':'struct size_known *' 54 struct on_member_pointer_complete_ty_ty_pos { 55 int count; 56 struct size_known *__counted_by(count) buf; 57 }; 58 59 // TODO: This should be forbidden but isn't due to counted_by being treated as a 60 // declaration attribute. The attribute ends up on the outer most pointer 61 // (allowed by sema) even though syntactically its supposed to be on the inner 62 // pointer (would not allowed by sema due to pointee being a function type). 63 // CHECK-LABEL: RecordDecl {{.+}} struct on_member_pointer_fn_ptr_ty_ty_pos_inner definition 64 // CHECK-NEXT: |-FieldDecl {{.+}} referenced count 'int' 65 // CHECK-NEXT: `-FieldDecl {{.+}} fn_ptr 'void (** __counted_by(count))(void)':'void (**)(void)' 66 struct on_member_pointer_fn_ptr_ty_ty_pos_inner { 67 int count; 68 void (* __counted_by(count) * fn_ptr)(void); 69 }; 70 71 // FIXME: The generated AST here is wrong. The attribute should be on the inner 72 // pointer. 73 // CHECK-LABEL: RecordDecl {{.+}} struct on_nested_pointer_inner definition 74 // CHECK-NEXT: |-FieldDecl {{.+}} referenced count 'int' 75 // CHECK-NEXT: `-FieldDecl {{.+}} buf 'struct size_known ** __counted_by(count)':'struct size_known **' 76 struct on_nested_pointer_inner { 77 int count; 78 // TODO: This should be disallowed because in the `-fbounds-safety` model 79 // `__counted_by` can only be nested when used in function parameters. 80 struct size_known *__counted_by(count) *buf; 81 }; 82 83 // CHECK-LABEL: RecordDecl {{.+}} struct on_nested_pointer_outer definition 84 // CHECK-NEXT: |-FieldDecl {{.+}} referenced count 'int' 85 // CHECK-NEXT: `-FieldDecl {{.+}} buf 'struct size_known ** __counted_by(count)':'struct size_known **' 86 struct on_nested_pointer_outer { 87 int count; 88 struct size_known **__counted_by(count) buf; 89 }; 90 91 // CHECK-LABEL: RecordDecl {{.+}} struct on_pointer_anon_buf_ty_pos definition 92 // CHECK-NEXT: |-FieldDecl {{.+}} referenced count 'int' 93 // CHECK-NEXT: |-RecordDecl {{.+}} struct definition 94 // CHECK-NEXT: | `-FieldDecl {{.+}} buf 'struct size_known * __counted_by(count)':'struct size_known *' 95 // CHECK-NEXT: |-FieldDecl {{.+}} implicit 'struct on_pointer_anon_buf_ty_pos::(anonymous at [[ANON_STRUCT_PATH2:.+]])' 96 // CHECK-NEXT: `-IndirectFieldDecl {{.+}} implicit buf 'struct size_known * __counted_by(count)':'struct size_known *' 97 // CHECK-NEXT: |-Field {{.+}} field_index 1 'struct on_pointer_anon_buf_ty_pos::(anonymous at [[ANON_STRUCT_PATH2]])' 98 // CHECK-NEXT: `-Field {{.+}} 'buf' 'struct size_known * __counted_by(count)':'struct size_known *' 99 struct on_pointer_anon_buf_ty_pos { 100 int count; 101 struct { 102 struct size_known * __counted_by(count) buf; 103 }; 104 }; 105 106 // CHECK-LABEL: RecordDecl {{.+}} struct on_pointer_anon_count_ty_pos definition 107 // CHECK-NEXT: |-RecordDecl {{.+}} struct definition 108 // CHECK-NEXT: | `-FieldDecl {{.+}} count 'int' 109 // CHECK-NEXT: |-FieldDecl {{.+}} implicit 'struct on_pointer_anon_count_ty_pos::(anonymous at [[ANON_STRUCT_PATH3:.+]])' 110 // CHECK-NEXT: |-IndirectFieldDecl {{.+}} implicit referenced count 'int' 111 // CHECK-NEXT: | |-Field {{.+}} field_index 0 'struct on_pointer_anon_count_ty_pos::(anonymous at [[ANON_STRUCT_PATH3]])' 112 // CHECK-NEXT: | `-Field {{.+}} 'count' 'int' 113 struct on_pointer_anon_count_ty_pos { 114 struct { 115 int count; 116 }; 117 struct size_known *__counted_by(count) buf; 118 }; 119