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carbon-lang
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carbon-lang
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toolchain
/
check
/
testdata
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class
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fail_derived_to_base.carbon

fail_derived_to_base.carbon 12 KB
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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+7]]:38: error: cannot implicitly convert expression of type `B2*` to `A1*` [ConversionFailure]
    25. 

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

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

  27. // CHECK:STDERR: fail_derived_to_base.carbon:[[@LINE+4]]:38: note: type `B2*` does not implement interface `Core.ImplicitAs(A1*)` [MissingImplInMemberAccessNote]
    28. 

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

  29. // CHECK:STDERR:                                      ^~~~~~~~~
    30. 

  30. // CHECK:STDERR:
    31. 

  31. fn ConvertUnrelated(p: B2*) -> A1* { return p; }
    32. 

  32. 

  33. class Incomplete;
    34. 

  34. 

  35. // CHECK:STDERR: fail_derived_to_base.carbon:[[@LINE+7]]:47: error: cannot implicitly convert expression of type `Incomplete*` to `A2*` [ConversionFailure]
    36. 

  36. // CHECK:STDERR: fn ConvertIncomplete(p: Incomplete*) -> A2* { return p; }
    37. 

  37. // CHECK:STDERR:                                               ^~~~~~~~~
    38. 

  38. // CHECK:STDERR: fail_derived_to_base.carbon:[[@LINE+4]]:47: note: type `Incomplete*` does not implement interface `Core.ImplicitAs(A2*)` [MissingImplInMemberAccessNote]
    39. 

  39. // CHECK:STDERR: fn ConvertIncomplete(p: Incomplete*) -> A2* { return p; }
    40. 

  40. // CHECK:STDERR:                                               ^~~~~~~~~
    41. 

  41. // CHECK:STDERR:
    42. 

  42. fn ConvertIncomplete(p: Incomplete*) -> A2* { return p; }
    43. 

  43. 

  44. // CHECK:STDOUT: --- fail_derived_to_base.carbon
    45. 

  45. // CHECK:STDOUT:
    46. 

  46. // CHECK:STDOUT: constants {
    47. 

  47. // CHECK:STDOUT:   %A1: type = class_type @A1 [concrete]
    48. 

  48. // CHECK:STDOUT:   %int_32: Core.IntLiteral = int_value 32 [concrete]
    49. 

  49. // CHECK:STDOUT:   %Int.type: type = generic_class_type @Int [concrete]
    50. 

  50. // CHECK:STDOUT:   %Int.generic: %Int.type = struct_value () [concrete]
    51. 

  51. // CHECK:STDOUT:   %i32: type = class_type @Int, @Int(%int_32) [concrete]
    52. 

  52. // CHECK:STDOUT:   %A1.elem: type = unbound_element_type %A1, %i32 [concrete]
    53. 

  53. // CHECK:STDOUT:   %struct_type.a: type = struct_type {.a: %i32} [concrete]
    54. 

  54. // CHECK:STDOUT:   %complete_type.fd7: <witness> = complete_type_witness %struct_type.a [concrete]
    55. 

  55. // CHECK:STDOUT:   %A2: type = class_type @A2 [concrete]
    56. 

  56. // CHECK:STDOUT:   %A2.elem: type = unbound_element_type %A2, %i32 [concrete]
    57. 

  57. // CHECK:STDOUT:   %B2: type = class_type @B2 [concrete]
    58. 

  58. // CHECK:STDOUT:   %B2.elem.a92: type = unbound_element_type %B2, %A2 [concrete]
    59. 

  59. // CHECK:STDOUT:   %B2.elem.4b2: type = unbound_element_type %B2, %i32 [concrete]
    60. 

  60. // CHECK:STDOUT:   %struct_type.base.b.618: type = struct_type {.base: %A2, .b: %i32} [concrete]
    61. 

  61. // CHECK:STDOUT:   %complete_type.92f: <witness> = complete_type_witness %struct_type.base.b.618 [concrete]
    62. 

  62. // CHECK:STDOUT:   %ptr.afe: type = ptr_type %B2 [concrete]
    63. 

  63. // CHECK:STDOUT:   %pattern_type.98e: type = pattern_type %ptr.afe [concrete]
    64. 

  64. // CHECK:STDOUT:   %ptr.678: type = ptr_type %A1 [concrete]
    65. 

  65. // CHECK:STDOUT:   %pattern_type.d72: type = pattern_type %ptr.678 [concrete]
    66. 

  66. // CHECK:STDOUT:   %ConvertUnrelated.type: type = fn_type @ConvertUnrelated [concrete]
    67. 

  67. // CHECK:STDOUT:   %ConvertUnrelated: %ConvertUnrelated.type = struct_value () [concrete]
    68. 

  68. // CHECK:STDOUT:   %ImplicitAs.type.cc7: type = generic_interface_type @ImplicitAs [concrete]
    69. 

  69. // CHECK:STDOUT:   %ImplicitAs.generic: %ImplicitAs.type.cc7 = struct_value () [concrete]
    70. 

  70. // CHECK:STDOUT:   %Incomplete: type = class_type @Incomplete [concrete]
    71. 

  71. // CHECK:STDOUT:   %ptr.c62: type = ptr_type %Incomplete [concrete]
    72. 

  72. // CHECK:STDOUT:   %pattern_type.275: type = pattern_type %ptr.c62 [concrete]
    73. 

  73. // CHECK:STDOUT:   %ptr.590: type = ptr_type %A2 [concrete]
    74. 

  74. // CHECK:STDOUT:   %pattern_type.2c5: type = pattern_type %ptr.590 [concrete]
    75. 

  75. // CHECK:STDOUT:   %ConvertIncomplete.type: type = fn_type @ConvertIncomplete [concrete]
    76. 

  76. // CHECK:STDOUT:   %ConvertIncomplete: %ConvertIncomplete.type = struct_value () [concrete]
    77. 

  77. // CHECK:STDOUT: }
    78. 

  78. // CHECK:STDOUT:
    79. 

  79. // CHECK:STDOUT: imports {
    80. 

  80. // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
    81. 

  81. // CHECK:STDOUT:     .Int = %Core.Int
    82. 

  82. // CHECK:STDOUT:     .ImplicitAs = %Core.ImplicitAs
    83. 

  83. // CHECK:STDOUT:     import Core//prelude
    84. 

  84. // CHECK:STDOUT:     import Core//prelude/...
    85. 

  85. // CHECK:STDOUT:   }
    86. 

  86. // CHECK:STDOUT:   %Core.Int: %Int.type = import_ref Core//prelude/types/int, Int, loaded [concrete = constants.%Int.generic]
    87. 

  87. // CHECK:STDOUT:   %Core.ImplicitAs: %ImplicitAs.type.cc7 = import_ref Core//prelude/operators/as, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
    88. 

  88. // CHECK:STDOUT: }
    89. 

  89. // CHECK:STDOUT:
    90. 

  90. // CHECK:STDOUT: file {
    91. 

  91. // CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
    92. 

  92. // CHECK:STDOUT:     .Core = imports.%Core
    93. 

  93. // CHECK:STDOUT:     .A1 = %A1.decl
    94. 

  94. // CHECK:STDOUT:     .A2 = %A2.decl
    95. 

  95. // CHECK:STDOUT:     .B2 = %B2.decl
    96. 

  96. // CHECK:STDOUT:     .ConvertUnrelated = %ConvertUnrelated.decl
    97. 

  97. // CHECK:STDOUT:     .Incomplete = %Incomplete.decl
    98. 

  98. // CHECK:STDOUT:     .ConvertIncomplete = %ConvertIncomplete.decl
    99. 

  99. // CHECK:STDOUT:   }
    100. 

  100. // CHECK:STDOUT:   %Core.import = import Core
    101. 

  101. // CHECK:STDOUT:   %A1.decl: type = class_decl @A1 [concrete = constants.%A1] {} {}
    102. 

  102. // CHECK:STDOUT:   %A2.decl: type = class_decl @A2 [concrete = constants.%A2] {} {}
    103. 

  103. // CHECK:STDOUT:   %B2.decl: type = class_decl @B2 [concrete = constants.%B2] {} {}
    104. 

  104. // CHECK:STDOUT:   %ConvertUnrelated.decl: %ConvertUnrelated.type = fn_decl @ConvertUnrelated [concrete = constants.%ConvertUnrelated] {
    105. 

  105. // CHECK:STDOUT:     %p.patt: %pattern_type.98e = binding_pattern p [concrete]
    106. 

  106. // CHECK:STDOUT:     %p.param_patt: %pattern_type.98e = value_param_pattern %p.patt, call_param0 [concrete]
    107. 

  107. // CHECK:STDOUT:     %return.patt: %pattern_type.d72 = return_slot_pattern [concrete]
    108. 

  108. // CHECK:STDOUT:     %return.param_patt: %pattern_type.d72 = out_param_pattern %return.patt, call_param1 [concrete]
    109. 

  109. // CHECK:STDOUT:   } {
    110. 

  110. // CHECK:STDOUT:     %A1.ref: type = name_ref A1, file.%A1.decl [concrete = constants.%A1]
    111. 

  111. // CHECK:STDOUT:     %ptr.loc31_34: type = ptr_type %A1.ref [concrete = constants.%ptr.678]
    112. 

  112. // CHECK:STDOUT:     %p.param: %ptr.afe = value_param call_param0
    113. 

  113. // CHECK:STDOUT:     %.loc31_26: type = splice_block %ptr.loc31_26 [concrete = constants.%ptr.afe] {
    114. 

  114. // CHECK:STDOUT:       %B2.ref: type = name_ref B2, file.%B2.decl [concrete = constants.%B2]
    115. 

  115. // CHECK:STDOUT:       %ptr.loc31_26: type = ptr_type %B2.ref [concrete = constants.%ptr.afe]
    116. 

  116. // CHECK:STDOUT:     }
    117. 

  117. // CHECK:STDOUT:     %p: %ptr.afe = bind_name p, %p.param
    118. 

  118. // CHECK:STDOUT:     %return.param: ref %ptr.678 = out_param call_param1
    119. 

  119. // CHECK:STDOUT:     %return: ref %ptr.678 = return_slot %return.param
    120. 

  120. // CHECK:STDOUT:   }
    121. 

  121. // CHECK:STDOUT:   %Incomplete.decl: type = class_decl @Incomplete [concrete = constants.%Incomplete] {} {}
    122. 

  122. // CHECK:STDOUT:   %ConvertIncomplete.decl: %ConvertIncomplete.type = fn_decl @ConvertIncomplete [concrete = constants.%ConvertIncomplete] {
    123. 

  123. // CHECK:STDOUT:     %p.patt: %pattern_type.275 = binding_pattern p [concrete]
    124. 

  124. // CHECK:STDOUT:     %p.param_patt: %pattern_type.275 = value_param_pattern %p.patt, call_param0 [concrete]
    125. 

  125. // CHECK:STDOUT:     %return.patt: %pattern_type.2c5 = return_slot_pattern [concrete]
    126. 

  126. // CHECK:STDOUT:     %return.param_patt: %pattern_type.2c5 = out_param_pattern %return.patt, call_param1 [concrete]
    127. 

  127. // CHECK:STDOUT:   } {
    128. 

  128. // CHECK:STDOUT:     %A2.ref: type = name_ref A2, file.%A2.decl [concrete = constants.%A2]
    129. 

  129. // CHECK:STDOUT:     %ptr.loc42_43: type = ptr_type %A2.ref [concrete = constants.%ptr.590]
    130. 

  130. // CHECK:STDOUT:     %p.param: %ptr.c62 = value_param call_param0
    131. 

  131. // CHECK:STDOUT:     %.loc42_35: type = splice_block %ptr.loc42_35 [concrete = constants.%ptr.c62] {
    132. 

  132. // CHECK:STDOUT:       %Incomplete.ref: type = name_ref Incomplete, file.%Incomplete.decl [concrete = constants.%Incomplete]
    133. 

  133. // CHECK:STDOUT:       %ptr.loc42_35: type = ptr_type %Incomplete.ref [concrete = constants.%ptr.c62]
    134. 

  134. // CHECK:STDOUT:     }
    135. 

  135. // CHECK:STDOUT:     %p: %ptr.c62 = bind_name p, %p.param
    136. 

  136. // CHECK:STDOUT:     %return.param: ref %ptr.590 = out_param call_param1
    137. 

  137. // CHECK:STDOUT:     %return: ref %ptr.590 = return_slot %return.param
    138. 

  138. // CHECK:STDOUT:   }
    139. 

  139. // CHECK:STDOUT: }
    140. 

  140. // CHECK:STDOUT:
    141. 

  141. // CHECK:STDOUT: class @A1 {
    142. 

  142. // CHECK:STDOUT:   %int_32: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
    143. 

  143. // CHECK:STDOUT:   %i32: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
    144. 

  144. // CHECK:STDOUT:   %.loc12: %A1.elem = field_decl a, element0 [concrete]
    145. 

  145. // CHECK:STDOUT:   %struct_type.a: type = struct_type {.a: %i32} [concrete = constants.%struct_type.a]
    146. 

  146. // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %struct_type.a [concrete = constants.%complete_type.fd7]
    147. 

  147. // CHECK:STDOUT:   complete_type_witness = %complete_type
    148. 

  148. // CHECK:STDOUT:
    149. 

  149. // CHECK:STDOUT: !members:
    150. 

  150. // CHECK:STDOUT:   .Self = constants.%A1
    151. 

  151. // CHECK:STDOUT:   .a = %.loc12
    152. 

  152. // CHECK:STDOUT: }
    153. 

  153. // CHECK:STDOUT:
    154. 

  154. // CHECK:STDOUT: class @A2 {
    155. 

  155. // CHECK:STDOUT:   %int_32: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
    156. 

  156. // CHECK:STDOUT:   %i32: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
    157. 

  157. // CHECK:STDOUT:   %.loc16: %A2.elem = field_decl a, element0 [concrete]
    158. 

  158. // CHECK:STDOUT:   %struct_type.a: type = struct_type {.a: %i32} [concrete = constants.%struct_type.a]
    159. 

  159. // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %struct_type.a [concrete = constants.%complete_type.fd7]
    160. 

  160. // CHECK:STDOUT:   complete_type_witness = %complete_type
    161. 

  161. // CHECK:STDOUT:
    162. 

  162. // CHECK:STDOUT: !members:
    163. 

  163. // CHECK:STDOUT:   .Self = constants.%A2
    164. 

  164. // CHECK:STDOUT:   .a = %.loc16
    165. 

  165. // CHECK:STDOUT: }
    166. 

  166. // CHECK:STDOUT:
    167. 

  167. // CHECK:STDOUT: class @B2 {
    168. 

  168. // CHECK:STDOUT:   %A2.ref: type = name_ref A2, file.%A2.decl [concrete = constants.%A2]
    169. 

  169. // CHECK:STDOUT:   %.loc20: %B2.elem.a92 = base_decl %A2.ref, element0 [concrete]
    170. 

  170. // CHECK:STDOUT:   %int_32: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
    171. 

  171. // CHECK:STDOUT:   %i32: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
    172. 

  172. // CHECK:STDOUT:   %.loc21: %B2.elem.4b2 = field_decl b, element1 [concrete]
    173. 

  173. // CHECK:STDOUT:   %struct_type.base.b: type = struct_type {.base: %A2, .b: %i32} [concrete = constants.%struct_type.base.b.618]
    174. 

  174. // CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %struct_type.base.b [concrete = constants.%complete_type.92f]
    175. 

  175. // CHECK:STDOUT:   complete_type_witness = %complete_type
    176. 

  176. // CHECK:STDOUT:
    177. 

  177. // CHECK:STDOUT: !members:
    178. 

  178. // CHECK:STDOUT:   .Self = constants.%B2
    179. 

  179. // CHECK:STDOUT:   .A2 = <poisoned>
    180. 

  180. // CHECK:STDOUT:   .base = %.loc20
    181. 

  181. // CHECK:STDOUT:   .b = %.loc21
    182. 

  182. // CHECK:STDOUT:   extend %A2.ref
    183. 

  183. // CHECK:STDOUT: }
    184. 

  184. // CHECK:STDOUT:
    185. 

  185. // CHECK:STDOUT: class @Incomplete;
    186. 

  186. // CHECK:STDOUT:
    187. 

  187. // CHECK:STDOUT: fn @ConvertUnrelated(%p.param: %ptr.afe) -> %ptr.678 {
    188. 

  188. // CHECK:STDOUT: !entry:
    189. 

  189. // CHECK:STDOUT:   %p.ref: %ptr.afe = name_ref p, %p
    190. 

  190. // CHECK:STDOUT:   %.loc31_46: %ptr.678 = converted %p.ref, <error> [concrete = <error>]
    191. 

  191. // CHECK:STDOUT:   return <error>
    192. 

  192. // CHECK:STDOUT: }
    193. 

  193. // CHECK:STDOUT:
    194. 

  194. // CHECK:STDOUT: fn @ConvertIncomplete(%p.param: %ptr.c62) -> %ptr.590 {
    195. 

  195. // CHECK:STDOUT: !entry:
    196. 

  196. // CHECK:STDOUT:   %p.ref: %ptr.c62 = name_ref p, %p
    197. 

  197. // CHECK:STDOUT:   %.loc42_55: %ptr.590 = converted %p.ref, <error> [concrete = <error>]
    198. 

  198. // CHECK:STDOUT:   return <error>
    199. 

  199. // CHECK:STDOUT: }
    200. 

  200. // CHECK:STDOUT:
    201.