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carbon-lang
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toolchain
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check
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testdata
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class
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fail_derived_to_base.carbon

fail_derived_to_base.carbon 8.4 KB
文件历史 原始文件

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  1. // Part of the Carbon Language project, under the Apache License v2.0 with LLVM
    2. 

  2. // Exceptions. See /LICENSE for license information.
    3. 

  3. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
    4. 

  4. //
    5. 

  5. // AUTOUPDATE
    6. 

  6. // TIP: To test this file alone, run:
    7. 

  7. // TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/class/fail_derived_to_base.carbon
    8. 

  8. // TIP: To dump output, run:
    9. 

  9. // TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/fail_derived_to_base.carbon
    10. 

  10. 

  11. base class A1 {
    12. 

  12.   var a: i32;
    13. 

  13. }
    14. 

  14. 

  15. base class A2 {
    16. 

  16.   var a: i32;
    17. 

  17. }
    18. 

  18. 

  19. class B2 {
    20. 

  20.   extend base: A2;
    21. 

  21.   var b: i32;
    22. 

  22. }
    23. 

  23. 

  24. // CHECK:STDERR: fail_derived_to_base.carbon:[[@LINE+4]]:38: ERROR: Cannot implicitly convert from `B2*` to `A1*`.
    25. 

  25. // CHECK:STDERR: fn ConvertUnrelated(p: B2*) -> A1* { return p; }
    26. 

  26. // CHECK:STDERR:                                      ^~~~~~~~~
    27. 

  27. // CHECK:STDERR:
    28. 

  28. fn ConvertUnrelated(p: B2*) -> A1* { return p; }
    29. 

  29. 

  30. class Incomplete;
    31. 

  31. 

  32. // CHECK:STDERR: fail_derived_to_base.carbon:[[@LINE+3]]:47: ERROR: Cannot implicitly convert from `Incomplete*` to `A2*`.
    33. 

  33. // CHECK:STDERR: fn ConvertIncomplete(p: Incomplete*) -> A2* { return p; }
    34. 

  34. // CHECK:STDERR:                                               ^~~~~~~~~
    35. 

  35. fn ConvertIncomplete(p: Incomplete*) -> A2* { return p; }
    36. 

  36. 

  37. // CHECK:STDOUT: --- fail_derived_to_base.carbon
    38. 

  38. // CHECK:STDOUT:
    39. 

  39. // CHECK:STDOUT: constants {
    40. 

  40. // CHECK:STDOUT:   %A1: type = class_type @A1 [template]
    41. 

  41. // CHECK:STDOUT:   %Int32.type: type = fn_type @Int32 [template]
    42. 

  42. // CHECK:STDOUT:   %.1: type = tuple_type () [template]
    43. 

  43. // CHECK:STDOUT:   %Int32: %Int32.type = struct_value () [template]
    44. 

  44. // CHECK:STDOUT:   %.2: type = unbound_element_type %A1, i32 [template]
    45. 

  45. // CHECK:STDOUT:   %.3: type = struct_type {.a: i32} [template]
    46. 

  46. // CHECK:STDOUT:   %A2: type = class_type @A2 [template]
    47. 

  47. // CHECK:STDOUT:   %.4: type = unbound_element_type %A2, i32 [template]
    48. 

  48. // CHECK:STDOUT:   %B2: type = class_type @B2 [template]
    49. 

  49. // CHECK:STDOUT:   %.5: type = ptr_type %.3 [template]
    50. 

  50. // CHECK:STDOUT:   %.6: type = unbound_element_type %B2, %A2 [template]
    51. 

  51. // CHECK:STDOUT:   %.7: type = unbound_element_type %B2, i32 [template]
    52. 

  52. // CHECK:STDOUT:   %.8: type = struct_type {.base: %A2, .b: i32} [template]
    53. 

  53. // CHECK:STDOUT:   %.9: type = ptr_type %B2 [template]
    54. 

  54. // CHECK:STDOUT:   %.10: type = ptr_type %A1 [template]
    55. 

  55. // CHECK:STDOUT:   %ConvertUnrelated.type: type = fn_type @ConvertUnrelated [template]
    56. 

  56. // CHECK:STDOUT:   %ConvertUnrelated: %ConvertUnrelated.type = struct_value () [template]
    57. 

  57. // CHECK:STDOUT:   %.11: type = struct_type {.base: %.5, .b: i32} [template]
    58. 

  58. // CHECK:STDOUT:   %.12: type = ptr_type %.11 [template]
    59. 

  59. // CHECK:STDOUT:   %.13: type = ptr_type %.8 [template]
    60. 

  60. // CHECK:STDOUT:   %Incomplete: type = class_type @Incomplete [template]
    61. 

  61. // CHECK:STDOUT:   %.14: type = ptr_type %Incomplete [template]
    62. 

  62. // CHECK:STDOUT:   %.15: type = ptr_type %A2 [template]
    63. 

  63. // CHECK:STDOUT:   %ConvertIncomplete.type: type = fn_type @ConvertIncomplete [template]
    64. 

  64. // CHECK:STDOUT:   %ConvertIncomplete: %ConvertIncomplete.type = struct_value () [template]
    65. 

  65. // CHECK:STDOUT: }
    66. 

  66. // CHECK:STDOUT:
    67. 

  67. // CHECK:STDOUT: imports {
    68. 

  68. // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
    69. 

  69. // CHECK:STDOUT:     .Int32 = %import_ref
    70. 

  70. // CHECK:STDOUT:     import Core//prelude
    71. 

  71. // CHECK:STDOUT:     import Core//prelude/operators
    72. 

  72. // CHECK:STDOUT:     import Core//prelude/types
    73. 

  73. // CHECK:STDOUT:     import Core//prelude/operators/arithmetic
    74. 

  74. // CHECK:STDOUT:     import Core//prelude/operators/bitwise
    75. 

  75. // CHECK:STDOUT:     import Core//prelude/operators/comparison
    76. 

  76. // CHECK:STDOUT:     import Core//prelude/types/bool
    77. 

  77. // CHECK:STDOUT:   }
    78. 

  78. // CHECK:STDOUT:   %import_ref: %Int32.type = import_ref Core//prelude/types, inst+4, loaded [template = constants.%Int32]
    79. 

  79. // CHECK:STDOUT: }
    80. 

  80. // CHECK:STDOUT:
    81. 

  81. // CHECK:STDOUT: file {
    82. 

  82. // CHECK:STDOUT:   package: <namespace> = namespace [template] {
    83. 

  83. // CHECK:STDOUT:     .Core = imports.%Core
    84. 

  84. // CHECK:STDOUT:     .A1 = %A1.decl
    85. 

  85. // CHECK:STDOUT:     .A2 = %A2.decl
    86. 

  86. // CHECK:STDOUT:     .B2 = %B2.decl
    87. 

  87. // CHECK:STDOUT:     .ConvertUnrelated = %ConvertUnrelated.decl
    88. 

  88. // CHECK:STDOUT:     .Incomplete = %Incomplete.decl
    89. 

  89. // CHECK:STDOUT:     .ConvertIncomplete = %ConvertIncomplete.decl
    90. 

  90. // CHECK:STDOUT:   }
    91. 

  91. // CHECK:STDOUT:   %Core.import = import Core
    92. 

  92. // CHECK:STDOUT:   %A1.decl: type = class_decl @A1 [template = constants.%A1] {}
    93. 

  93. // CHECK:STDOUT:   %A2.decl: type = class_decl @A2 [template = constants.%A2] {}
    94. 

  94. // CHECK:STDOUT:   %B2.decl: type = class_decl @B2 [template = constants.%B2] {}
    95. 

  95. // CHECK:STDOUT:   %ConvertUnrelated.decl: %ConvertUnrelated.type = fn_decl @ConvertUnrelated [template = constants.%ConvertUnrelated] {
    96. 

  96. // CHECK:STDOUT:     %B2.ref: type = name_ref B2, %B2.decl [template = constants.%B2]
    97. 

  97. // CHECK:STDOUT:     %.loc28_26: type = ptr_type %B2 [template = constants.%.9]
    98. 

  98. // CHECK:STDOUT:     %p.loc28_21.1: %.9 = param p
    99. 

  99. // CHECK:STDOUT:     @ConvertUnrelated.%p: %.9 = bind_name p, %p.loc28_21.1
    100. 

  100. // CHECK:STDOUT:     %A1.ref: type = name_ref A1, %A1.decl [template = constants.%A1]
    101. 

  101. // CHECK:STDOUT:     %.loc28_34: type = ptr_type %A1 [template = constants.%.10]
    102. 

  102. // CHECK:STDOUT:     @ConvertUnrelated.%return: ref %.10 = var <return slot>
    103. 

  103. // CHECK:STDOUT:   }
    104. 

  104. // CHECK:STDOUT:   %Incomplete.decl: type = class_decl @Incomplete [template = constants.%Incomplete] {}
    105. 

  105. // CHECK:STDOUT:   %ConvertIncomplete.decl: %ConvertIncomplete.type = fn_decl @ConvertIncomplete [template = constants.%ConvertIncomplete] {
    106. 

  106. // CHECK:STDOUT:     %Incomplete.ref: type = name_ref Incomplete, %Incomplete.decl [template = constants.%Incomplete]
    107. 

  107. // CHECK:STDOUT:     %.loc35_35: type = ptr_type %Incomplete [template = constants.%.14]
    108. 

  108. // CHECK:STDOUT:     %p.loc35_22.1: %.14 = param p
    109. 

  109. // CHECK:STDOUT:     @ConvertIncomplete.%p: %.14 = bind_name p, %p.loc35_22.1
    110. 

  110. // CHECK:STDOUT:     %A2.ref: type = name_ref A2, %A2.decl [template = constants.%A2]
    111. 

  111. // CHECK:STDOUT:     %.loc35_43: type = ptr_type %A2 [template = constants.%.15]
    112. 

  112. // CHECK:STDOUT:     @ConvertIncomplete.%return: ref %.15 = var <return slot>
    113. 

  113. // CHECK:STDOUT:   }
    114. 

  114. // CHECK:STDOUT: }
    115. 

  115. // CHECK:STDOUT:
    116. 

  116. // CHECK:STDOUT: class @A1 {
    117. 

  117. // CHECK:STDOUT:   %int.make_type_32: init type = call constants.%Int32() [template = i32]
    118. 

  118. // CHECK:STDOUT:   %.loc12_10.1: type = value_of_initializer %int.make_type_32 [template = i32]
    119. 

  119. // CHECK:STDOUT:   %.loc12_10.2: type = converted %int.make_type_32, %.loc12_10.1 [template = i32]
    120. 

  120. // CHECK:STDOUT:   %.loc12_8: %.2 = field_decl a, element0 [template]
    121. 

  121. // CHECK:STDOUT:
    122. 

  122. // CHECK:STDOUT: !members:
    123. 

  123. // CHECK:STDOUT:   .Self = constants.%A1
    124. 

  124. // CHECK:STDOUT:   .a = %.loc12_8
    125. 

  125. // CHECK:STDOUT: }
    126. 

  126. // CHECK:STDOUT:
    127. 

  127. // CHECK:STDOUT: class @A2 {
    128. 

  128. // CHECK:STDOUT:   %int.make_type_32: init type = call constants.%Int32() [template = i32]
    129. 

  129. // CHECK:STDOUT:   %.loc16_10.1: type = value_of_initializer %int.make_type_32 [template = i32]
    130. 

  130. // CHECK:STDOUT:   %.loc16_10.2: type = converted %int.make_type_32, %.loc16_10.1 [template = i32]
    131. 

  131. // CHECK:STDOUT:   %.loc16_8: %.4 = field_decl a, element0 [template]
    132. 

  132. // CHECK:STDOUT:
    133. 

  133. // CHECK:STDOUT: !members:
    134. 

  134. // CHECK:STDOUT:   .Self = constants.%A2
    135. 

  135. // CHECK:STDOUT:   .a = %.loc16_8
    136. 

  136. // CHECK:STDOUT: }
    137. 

  137. // CHECK:STDOUT:
    138. 

  138. // CHECK:STDOUT: class @B2 {
    139. 

  139. // CHECK:STDOUT:   %A2.ref: type = name_ref A2, file.%A2.decl [template = constants.%A2]
    140. 

  140. // CHECK:STDOUT:   %.loc20: %.6 = base_decl %A2, element0 [template]
    141. 

  141. // CHECK:STDOUT:   %int.make_type_32: init type = call constants.%Int32() [template = i32]
    142. 

  142. // CHECK:STDOUT:   %.loc21_10.1: type = value_of_initializer %int.make_type_32 [template = i32]
    143. 

  143. // CHECK:STDOUT:   %.loc21_10.2: type = converted %int.make_type_32, %.loc21_10.1 [template = i32]
    144. 

  144. // CHECK:STDOUT:   %.loc21_8: %.7 = field_decl b, element1 [template]
    145. 

  145. // CHECK:STDOUT:
    146. 

  146. // CHECK:STDOUT: !members:
    147. 

  147. // CHECK:STDOUT:   .Self = constants.%B2
    148. 

  148. // CHECK:STDOUT:   .base = %.loc20
    149. 

  149. // CHECK:STDOUT:   .b = %.loc21_8
    150. 

  150. // CHECK:STDOUT:   extend name_scope3
    151. 

  151. // CHECK:STDOUT: }
    152. 

  152. // CHECK:STDOUT:
    153. 

  153. // CHECK:STDOUT: class @Incomplete;
    154. 

  154. // CHECK:STDOUT:
    155. 

  155. // CHECK:STDOUT: fn @Int32() -> type = "int.make_type_32";
    156. 

  156. // CHECK:STDOUT:
    157. 

  157. // CHECK:STDOUT: fn @ConvertUnrelated(%p: %.9) -> %.10 {
    158. 

  158. // CHECK:STDOUT: !entry:
    159. 

  159. // CHECK:STDOUT:   %p.ref: %.9 = name_ref p, %p
    160. 

  160. // CHECK:STDOUT:   return <error>
    161. 

  161. // CHECK:STDOUT: }
    162. 

  162. // CHECK:STDOUT:
    163. 

  163. // CHECK:STDOUT: fn @ConvertIncomplete(%p: %.14) -> %.15 {
    164. 

  164. // CHECK:STDOUT: !entry:
    165. 

  165. // CHECK:STDOUT:   %p.ref: %.14 = name_ref p, %p
    166. 

  166. // CHECK:STDOUT:   return <error>
    167. 

  167. // CHECK:STDOUT: }
    168. 

  168. // CHECK:STDOUT:
    169.