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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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const
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fail_collapse.carbon

fail_collapse.carbon 11 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/const/fail_collapse.carbon
    8. 

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

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

  10. 

  11. // CHECK:STDERR: fail_collapse.carbon:[[@LINE+4]]:9: warning: `const` applied repeatedly to the same type has no additional effect
    12. 

  12. // CHECK:STDERR: fn G(p: const (const i32)**) -> i32** {
    13. 

  13. // CHECK:STDERR:         ^~~~~~~~~~~~~~~~~
    14. 

  14. // CHECK:STDERR:
    15. 

  15. fn G(p: const (const i32)**) -> i32** {
    16. 

  16.   // CHECK:STDERR: fail_collapse.carbon:[[@LINE+6]]:3: error: cannot implicitly convert from `const i32**` to `i32**`
    17. 

  17.   // CHECK:STDERR:   return p;
    18. 

  18.   // CHECK:STDERR:   ^~~~~~~~~
    19. 

  19.   // CHECK:STDERR: fail_collapse.carbon:[[@LINE+3]]:3: note: type `const i32**` does not implement interface `ImplicitAs`
    20. 

  20.   // CHECK:STDERR:   return p;
    21. 

  21.   // CHECK:STDERR:   ^~~~~~~~~
    22. 

  22.   return p;
    23. 

  23. }
    24. 

  24. 

  25. // CHECK:STDOUT: --- fail_collapse.carbon
    26. 

  26. // CHECK:STDOUT:
    27. 

  27. // CHECK:STDOUT: constants {
    28. 

  28. // CHECK:STDOUT:   %Int32.type: type = fn_type @Int32 [template]
    29. 

  29. // CHECK:STDOUT:   %.1: type = tuple_type () [template]
    30. 

  30. // CHECK:STDOUT:   %Int32: %Int32.type = struct_value () [template]
    31. 

  31. // CHECK:STDOUT:   %.2: type = const_type i32 [template]
    32. 

  32. // CHECK:STDOUT:   %.3: type = ptr_type %.2 [template]
    33. 

  33. // CHECK:STDOUT:   %.4: type = ptr_type %.3 [template]
    34. 

  34. // CHECK:STDOUT:   %.5: type = ptr_type i32 [template]
    35. 

  35. // CHECK:STDOUT:   %.6: type = ptr_type %.5 [template]
    36. 

  36. // CHECK:STDOUT:   %G.type: type = fn_type @G [template]
    37. 

  37. // CHECK:STDOUT:   %G: %G.type = struct_value () [template]
    38. 

  38. // CHECK:STDOUT:   %ImplicitAs.type.1: type = generic_interface_type @ImplicitAs [template]
    39. 

  39. // CHECK:STDOUT:   %ImplicitAs: %ImplicitAs.type.1 = struct_value () [template]
    40. 

  40. // CHECK:STDOUT:   %Dest: type = bind_symbolic_name Dest, 0 [symbolic]
    41. 

  41. // CHECK:STDOUT:   %ImplicitAs.type.2: type = interface_type @ImplicitAs, @ImplicitAs(%Dest) [symbolic]
    42. 

  42. // CHECK:STDOUT:   %Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.2) = bind_symbolic_name Self, 1 [symbolic]
    43. 

  43. // CHECK:STDOUT:   %Dest.patt: type = symbolic_binding_pattern Dest, 0 [symbolic]
    44. 

  44. // CHECK:STDOUT:   %Self.2: %ImplicitAs.type.2 = bind_symbolic_name Self, 1 [symbolic]
    45. 

  45. // CHECK:STDOUT:   %Convert.type.1: type = fn_type @Convert, @ImplicitAs(%Dest) [symbolic]
    46. 

  46. // CHECK:STDOUT:   %Convert.1: %Convert.type.1 = struct_value () [symbolic]
    47. 

  47. // CHECK:STDOUT:   %.7: type = assoc_entity_type %ImplicitAs.type.2, %Convert.type.1 [symbolic]
    48. 

  48. // CHECK:STDOUT:   %.8: %.7 = assoc_entity element0, imports.%import_ref.6 [symbolic]
    49. 

  49. // CHECK:STDOUT:   %ImplicitAs.type.3: type = interface_type @ImplicitAs, @ImplicitAs(%.6) [template]
    50. 

  50. // CHECK:STDOUT:   %Convert.type.2: type = fn_type @Convert, @ImplicitAs(%.6) [template]
    51. 

  51. // CHECK:STDOUT:   %Convert.2: %Convert.type.2 = struct_value () [template]
    52. 

  52. // CHECK:STDOUT:   %.9: type = assoc_entity_type %ImplicitAs.type.3, %Convert.type.2 [template]
    53. 

  53. // CHECK:STDOUT:   %.10: %.9 = assoc_entity element0, imports.%import_ref.6 [template]
    54. 

  54. // CHECK:STDOUT:   %.11: %.7 = assoc_entity element0, imports.%import_ref.7 [symbolic]
    55. 

  55. // CHECK:STDOUT: }
    56. 

  56. // CHECK:STDOUT:
    57. 

  57. // CHECK:STDOUT: imports {
    58. 

  58. // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
    59. 

  59. // CHECK:STDOUT:     .Int32 = %import_ref.1
    60. 

  60. // CHECK:STDOUT:     .ImplicitAs = %import_ref.2
    61. 

  61. // CHECK:STDOUT:     import Core//prelude
    62. 

  62. // CHECK:STDOUT:     import Core//prelude/operators
    63. 

  63. // CHECK:STDOUT:     import Core//prelude/types
    64. 

  64. // CHECK:STDOUT:     import Core//prelude/operators/arithmetic
    65. 

  65. // CHECK:STDOUT:     import Core//prelude/operators/as
    66. 

  66. // CHECK:STDOUT:     import Core//prelude/operators/bitwise
    67. 

  67. // CHECK:STDOUT:     import Core//prelude/operators/comparison
    68. 

  68. // CHECK:STDOUT:     import Core//prelude/types/bool
    69. 

  69. // CHECK:STDOUT:   }
    70. 

  70. // CHECK:STDOUT:   %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+9, loaded [template = constants.%Int32]
    71. 

  71. // CHECK:STDOUT:   %import_ref.2: %ImplicitAs.type.1 = import_ref Core//prelude/operators/as, inst+46, loaded [template = constants.%ImplicitAs]
    72. 

  72. // CHECK:STDOUT:   %import_ref.3 = import_ref Core//prelude/operators/as, inst+52, unloaded
    73. 

  73. // CHECK:STDOUT:   %import_ref.4: @ImplicitAs.%.1 (%.7) = import_ref Core//prelude/operators/as, inst+71, loaded [symbolic = @ImplicitAs.%.2 (constants.%.11)]
    74. 

  74. // CHECK:STDOUT:   %import_ref.5 = import_ref Core//prelude/operators/as, inst+64, unloaded
    75. 

  75. // CHECK:STDOUT:   %import_ref.6 = import_ref Core//prelude/operators/as, inst+64, unloaded
    76. 

  76. // CHECK:STDOUT:   %import_ref.7 = import_ref Core//prelude/operators/as, inst+64, unloaded
    77. 

  77. // CHECK:STDOUT: }
    78. 

  78. // CHECK:STDOUT:
    79. 

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

  80. // CHECK:STDOUT:   package: <namespace> = namespace [template] {
    81. 

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

  82. // CHECK:STDOUT:     .G = %G.decl
    83. 

  83. // CHECK:STDOUT:   }
    84. 

  84. // CHECK:STDOUT:   %Core.import = import Core
    85. 

  85. // CHECK:STDOUT:   %G.decl: %G.type = fn_decl @G [template = constants.%G] {
    86. 

  86. // CHECK:STDOUT:     %p.patt: %.4 = binding_pattern p
    87. 

  87. // CHECK:STDOUT:     %p.param_patt: %.4 = param_pattern %p.patt, runtime_param0
    88. 

  88. // CHECK:STDOUT:   } {
    89. 

  89. // CHECK:STDOUT:     %int.make_type_32.loc15_22: init type = call constants.%Int32() [template = i32]
    90. 

  90. // CHECK:STDOUT:     %.loc15_16.1: type = value_of_initializer %int.make_type_32.loc15_22 [template = i32]
    91. 

  91. // CHECK:STDOUT:     %.loc15_16.2: type = converted %int.make_type_32.loc15_22, %.loc15_16.1 [template = i32]
    92. 

  92. // CHECK:STDOUT:     %.loc15_16.3: type = const_type i32 [template = constants.%.2]
    93. 

  93. // CHECK:STDOUT:     %.loc15_9: type = const_type %.2 [template = constants.%.2]
    94. 

  94. // CHECK:STDOUT:     %.loc15_26: type = ptr_type %.2 [template = constants.%.3]
    95. 

  95. // CHECK:STDOUT:     %.loc15_27: type = ptr_type %.3 [template = constants.%.4]
    96. 

  96. // CHECK:STDOUT:     %int.make_type_32.loc15_33: init type = call constants.%Int32() [template = i32]
    97. 

  97. // CHECK:STDOUT:     %.loc15_36.1: type = value_of_initializer %int.make_type_32.loc15_33 [template = i32]
    98. 

  98. // CHECK:STDOUT:     %.loc15_36.2: type = converted %int.make_type_32.loc15_33, %.loc15_36.1 [template = i32]
    99. 

  99. // CHECK:STDOUT:     %.loc15_36.3: type = ptr_type i32 [template = constants.%.5]
    100. 

  100. // CHECK:STDOUT:     %.loc15_37: type = ptr_type %.5 [template = constants.%.6]
    101. 

  101. // CHECK:STDOUT:     %return: ref %.6 = var <return slot>
    102. 

  102. // CHECK:STDOUT:     %param: %.4 = param runtime_param0
    103. 

  103. // CHECK:STDOUT:     %p: %.4 = bind_name p, %param
    104. 

  104. // CHECK:STDOUT:   }
    105. 

  105. // CHECK:STDOUT: }
    106. 

  106. // CHECK:STDOUT:
    107. 

  107. // CHECK:STDOUT: generic interface @ImplicitAs(constants.%Dest: type) {
    108. 

  108. // CHECK:STDOUT:   %Dest: type = bind_symbolic_name Dest, 0 [symbolic = %Dest (constants.%Dest)]
    109. 

  109. // CHECK:STDOUT:   %Dest.patt: type = symbolic_binding_pattern Dest, 0 [symbolic = %Dest.patt (constants.%Dest.patt)]
    110. 

  110. // CHECK:STDOUT:
    111. 

  111. // CHECK:STDOUT: !definition:
    112. 

  112. // CHECK:STDOUT:   %ImplicitAs.type: type = interface_type @ImplicitAs, @ImplicitAs(%Dest) [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.2)]
    113. 

  113. // CHECK:STDOUT:   %Self: %ImplicitAs.type.2 = bind_symbolic_name Self, 1 [symbolic = %Self (constants.%Self.2)]
    114. 

  114. // CHECK:STDOUT:   %Convert.type: type = fn_type @Convert, @ImplicitAs(%Dest) [symbolic = %Convert.type (constants.%Convert.type.1)]
    115. 

  115. // CHECK:STDOUT:   %Convert: @ImplicitAs.%Convert.type (%Convert.type.1) = struct_value () [symbolic = %Convert (constants.%Convert.1)]
    116. 

  116. // CHECK:STDOUT:   %.1: type = assoc_entity_type @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.2), @ImplicitAs.%Convert.type (%Convert.type.1) [symbolic = %.1 (constants.%.7)]
    117. 

  117. // CHECK:STDOUT:   %.2: @ImplicitAs.%.1 (%.7) = assoc_entity element0, imports.%import_ref.6 [symbolic = %.2 (constants.%.8)]
    118. 

  118. // CHECK:STDOUT:
    119. 

  119. // CHECK:STDOUT:   interface {
    120. 

  120. // CHECK:STDOUT:   !members:
    121. 

  121. // CHECK:STDOUT:     .Self = imports.%import_ref.3
    122. 

  122. // CHECK:STDOUT:     .Convert = imports.%import_ref.4
    123. 

  123. // CHECK:STDOUT:     witness = (imports.%import_ref.5)
    124. 

  124. // CHECK:STDOUT:   }
    125. 

  125. // CHECK:STDOUT: }
    126. 

  126. // CHECK:STDOUT:
    127. 

  127. // CHECK:STDOUT: fn @Int32() -> type = "int.make_type_32";
    128. 

  128. // CHECK:STDOUT:
    129. 

  129. // CHECK:STDOUT: fn @G(%p.param_patt: %.4) -> %.6 {
    130. 

  130. // CHECK:STDOUT: !entry:
    131. 

  131. // CHECK:STDOUT:   %p.ref: %.4 = name_ref p, %p
    132. 

  132. // CHECK:STDOUT:   %ImplicitAs.type: type = interface_type @ImplicitAs, @ImplicitAs(constants.%.6) [template = constants.%ImplicitAs.type.3]
    133. 

  133. // CHECK:STDOUT:   %.loc22_11.1: %.9 = specific_constant imports.%import_ref.4, @ImplicitAs(constants.%.6) [template = constants.%.10]
    134. 

  134. // CHECK:STDOUT:   %Convert.ref: %.9 = name_ref Convert, %.loc22_11.1 [template = constants.%.10]
    135. 

  135. // CHECK:STDOUT:   %.loc22_11.2: %.6 = converted %p.ref, <error> [template = <error>]
    136. 

  136. // CHECK:STDOUT:   return <error>
    137. 

  137. // CHECK:STDOUT: }
    138. 

  138. // CHECK:STDOUT:
    139. 

  139. // CHECK:STDOUT: generic fn @Convert(constants.%Dest: type, constants.%Self.1: @ImplicitAs.%ImplicitAs.type (%ImplicitAs.type.2)) {
    140. 

  140. // CHECK:STDOUT:   %Dest: type = bind_symbolic_name Dest, 0 [symbolic = %Dest (constants.%Dest)]
    141. 

  141. // CHECK:STDOUT:   %ImplicitAs.type: type = interface_type @ImplicitAs, @ImplicitAs(%Dest) [symbolic = %ImplicitAs.type (constants.%ImplicitAs.type.2)]
    142. 

  142. // CHECK:STDOUT:   %Self: %ImplicitAs.type.2 = bind_symbolic_name Self, 1 [symbolic = %Self (constants.%Self.2)]
    143. 

  143. // CHECK:STDOUT:
    144. 

  144. // CHECK:STDOUT:   fn[%self.param_patt: @Convert.%Self (%Self.2)]() -> @Convert.%Dest (%Dest);
    145. 

  145. // CHECK:STDOUT: }
    146. 

  146. // CHECK:STDOUT:
    147. 

  147. // CHECK:STDOUT: specific @ImplicitAs(constants.%Dest) {
    148. 

  148. // CHECK:STDOUT:   %Dest => constants.%Dest
    149. 

  149. // CHECK:STDOUT:   %Dest.patt => constants.%Dest
    150. 

  150. // CHECK:STDOUT: }
    151. 

  151. // CHECK:STDOUT:
    152. 

  152. // CHECK:STDOUT: specific @ImplicitAs(@ImplicitAs.%Dest) {
    153. 

  153. // CHECK:STDOUT:   %Dest => constants.%Dest
    154. 

  154. // CHECK:STDOUT:   %Dest.patt => constants.%Dest
    155. 

  155. // CHECK:STDOUT: }
    156. 

  156. // CHECK:STDOUT:
    157. 

  157. // CHECK:STDOUT: specific @ImplicitAs(@Convert.%Dest) {
    158. 

  158. // CHECK:STDOUT:   %Dest => constants.%Dest
    159. 

  159. // CHECK:STDOUT:   %Dest.patt => constants.%Dest
    160. 

  160. // CHECK:STDOUT: }
    161. 

  161. // CHECK:STDOUT:
    162. 

  162. // CHECK:STDOUT: specific @Convert(constants.%Dest, constants.%Self.1) {
    163. 

  163. // CHECK:STDOUT:   %Dest => constants.%Dest
    164. 

  164. // CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.2
    165. 

  165. // CHECK:STDOUT:   %Self => constants.%Self.1
    166. 

  166. // CHECK:STDOUT: }
    167. 

  167. // CHECK:STDOUT:
    168. 

  168. // CHECK:STDOUT: specific @ImplicitAs(constants.%.6) {
    169. 

  169. // CHECK:STDOUT:   %Dest => constants.%.6
    170. 

  170. // CHECK:STDOUT:   %Dest.patt => constants.%.6
    171. 

  171. // CHECK:STDOUT:
    172. 

  172. // CHECK:STDOUT: !definition:
    173. 

  173. // CHECK:STDOUT:   %ImplicitAs.type => constants.%ImplicitAs.type.3
    174. 

  174. // CHECK:STDOUT:   %Self => constants.%Self.2
    175. 

  175. // CHECK:STDOUT:   %Convert.type => constants.%Convert.type.2
    176. 

  176. // CHECK:STDOUT:   %Convert => constants.%Convert.2
    177. 

  177. // CHECK:STDOUT:   %.1 => constants.%.9
    178. 

  178. // CHECK:STDOUT:   %.2 => constants.%.10
    179. 

  179. // CHECK:STDOUT: }
    180. 

  180. // CHECK:STDOUT:
    181.