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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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index
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fail_expr_category.carbon

fail_expr_category.carbon 14 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/index/fail_expr_category.carbon
    8. 

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

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

  10. 

  11. fn F() -> [i32; 3];
    12. 

  12. 

  13. fn G(b: [i32; 3]) {
    14. 

  14.   // Indexing an array value gives a value.
    15. 

  15.   // CHECK:STDERR: fail_expr_category.carbon:[[@LINE+4]]:18: error: cannot take the address of non-reference expression [AddrOfNonRef]
    16. 

  16.   // CHECK:STDERR:   var pb: i32* = &b[0];
    17. 

  17.   // CHECK:STDERR:                  ^
    18. 

  18.   // CHECK:STDERR:
    19. 

  19.   var pb: i32* = &b[0];
    20. 

  20.   // CHECK:STDERR: fail_expr_category.carbon:[[@LINE+4]]:3: error: expression is not assignable [AssignmentToNonAssignable]
    21. 

  21.   // CHECK:STDERR:   b[0] = 4;
    22. 

  22.   // CHECK:STDERR:   ^~~~
    23. 

  23.   // CHECK:STDERR:
    24. 

  24.   b[0] = 4;
    25. 

  25. 

  26.   // Indexing an ephemeral reference (materialized from an initializing
    27. 

  27.   // expression) gives a value.
    28. 

  28.   // CHECK:STDERR: fail_expr_category.carbon:[[@LINE+4]]:18: error: cannot take the address of non-reference expression [AddrOfNonRef]
    29. 

  29.   // CHECK:STDERR:   var pf: i32* = &F()[0];
    30. 

  30.   // CHECK:STDERR:                  ^
    31. 

  31.   // CHECK:STDERR:
    32. 

  32.   var pf: i32* = &F()[0];
    33. 

  33.   // CHECK:STDERR: fail_expr_category.carbon:[[@LINE+3]]:3: error: expression is not assignable [AssignmentToNonAssignable]
    34. 

  34.   // CHECK:STDERR:   F()[0] = 4;
    35. 

  35.   // CHECK:STDERR:   ^~~~~~
    36. 

  36.   F()[0] = 4;
    37. 

  37. }
    38. 

  38. 

  39. // CHECK:STDOUT: --- fail_expr_category.carbon
    40. 

  40. // CHECK:STDOUT:
    41. 

  41. // CHECK:STDOUT: constants {
    42. 

  42. // CHECK:STDOUT:   %int_32: Core.IntLiteral = int_value 32 [template]
    43. 

  43. // CHECK:STDOUT:   %i32: type = class_type @Int, @Int(%int_32) [template]
    44. 

  44. // CHECK:STDOUT:   %int_3: Core.IntLiteral = int_value 3 [template]
    45. 

  45. // CHECK:STDOUT:   %array_type: type = array_type %int_3, %i32 [template]
    46. 

  46. // CHECK:STDOUT:   %F.type: type = fn_type @F [template]
    47. 

  47. // CHECK:STDOUT:   %F: %F.type = struct_value () [template]
    48. 

  48. // CHECK:STDOUT:   %G.type: type = fn_type @G [template]
    49. 

  49. // CHECK:STDOUT:   %G: %G.type = struct_value () [template]
    50. 

  50. // CHECK:STDOUT:   %ptr.2: type = ptr_type %i32 [template]
    51. 

  51. // CHECK:STDOUT:   %int_0.1: Core.IntLiteral = int_value 0 [template]
    52. 

  52. // CHECK:STDOUT:   %Convert.type.2: type = fn_type @Convert.1, @ImplicitAs(%i32) [template]
    53. 

  53. // CHECK:STDOUT:   %Convert.type.10: type = fn_type @Convert.2, @impl.1(%int_32) [template]
    54. 

  54. // CHECK:STDOUT:   %Convert.10: %Convert.type.10 = struct_value () [template]
    55. 

  55. // CHECK:STDOUT:   %interface.5: <witness> = interface_witness (%Convert.10) [template]
    56. 

  56. // CHECK:STDOUT:   %Convert.bound.1: <bound method> = bound_method %int_0.1, %Convert.10 [template]
    57. 

  57. // CHECK:STDOUT:   %Convert.specific_fn.1: <specific function> = specific_function %Convert.bound.1, @Convert.2(%int_32) [template]
    58. 

  58. // CHECK:STDOUT:   %int_0.2: %i32 = int_value 0 [template]
    59. 

  59. // CHECK:STDOUT:   %int_4.1: Core.IntLiteral = int_value 4 [template]
    60. 

  60. // CHECK:STDOUT:   %Convert.bound.2: <bound method> = bound_method %int_4.1, %Convert.10 [template]
    61. 

  61. // CHECK:STDOUT:   %Convert.specific_fn.2: <specific function> = specific_function %Convert.bound.2, @Convert.2(%int_32) [template]
    62. 

  62. // CHECK:STDOUT:   %int_4.2: %i32 = int_value 4 [template]
    63. 

  63. // CHECK:STDOUT: }
    64. 

  64. // CHECK:STDOUT:
    65. 

  65. // CHECK:STDOUT: imports {
    66. 

  66. // CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [template] {
    67. 

  67. // CHECK:STDOUT:     .Int = %import_ref.1
    68. 

  68. // CHECK:STDOUT:     .ImplicitAs = %import_ref.5
    69. 

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

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

  71. // CHECK:STDOUT:   }
    72. 

  72. // CHECK:STDOUT: }
    73. 

  73. // CHECK:STDOUT:
    74. 

  74. // CHECK:STDOUT: file {
    75. 

  75. // CHECK:STDOUT:   package: <namespace> = namespace [template] {
    76. 

  76. // CHECK:STDOUT:     .Core = imports.%Core
    77. 

  77. // CHECK:STDOUT:     .F = %F.decl
    78. 

  78. // CHECK:STDOUT:     .G = %G.decl
    79. 

  79. // CHECK:STDOUT:   }
    80. 

  80. // CHECK:STDOUT:   %Core.import = import Core
    81. 

  81. // CHECK:STDOUT:   %F.decl: %F.type = fn_decl @F [template = constants.%F] {
    82. 

  82. // CHECK:STDOUT:     %return.patt: %array_type = return_slot_pattern
    83. 

  83. // CHECK:STDOUT:     %return.param_patt: %array_type = out_param_pattern %return.patt, runtime_param0
    84. 

  84. // CHECK:STDOUT:   } {
    85. 

  85. // CHECK:STDOUT:     %int_32: Core.IntLiteral = int_value 32 [template = constants.%int_32]
    86. 

  86. // CHECK:STDOUT:     %i32: type = class_type @Int, @Int(constants.%int_32) [template = constants.%i32]
    87. 

  87. // CHECK:STDOUT:     %int_3: Core.IntLiteral = int_value 3 [template = constants.%int_3]
    88. 

  88. // CHECK:STDOUT:     %array_type: type = array_type %int_3, %i32 [template = constants.%array_type]
    89. 

  89. // CHECK:STDOUT:     %return.param: ref %array_type = out_param runtime_param0
    90. 

  90. // CHECK:STDOUT:     %return: ref %array_type = return_slot %return.param
    91. 

  91. // CHECK:STDOUT:   }
    92. 

  92. // CHECK:STDOUT:   %G.decl: %G.type = fn_decl @G [template = constants.%G] {
    93. 

  93. // CHECK:STDOUT:     %b.patt: %array_type = binding_pattern b
    94. 

  94. // CHECK:STDOUT:     %b.param_patt: %array_type = value_param_pattern %b.patt, runtime_param0
    95. 

  95. // CHECK:STDOUT:   } {
    96. 

  96. // CHECK:STDOUT:     %b.param: %array_type = value_param runtime_param0
    97. 

  97. // CHECK:STDOUT:     %.loc13: type = splice_block %array_type [template = constants.%array_type] {
    98. 

  98. // CHECK:STDOUT:       %int_32.loc13: Core.IntLiteral = int_value 32 [template = constants.%int_32]
    99. 

  99. // CHECK:STDOUT:       %i32.loc13: type = class_type @Int, @Int(constants.%int_32) [template = constants.%i32]
    100. 

  100. // CHECK:STDOUT:       %int_3: Core.IntLiteral = int_value 3 [template = constants.%int_3]
    101. 

  101. // CHECK:STDOUT:       %array_type: type = array_type %int_3, %i32 [template = constants.%array_type]
    102. 

  102. // CHECK:STDOUT:     }
    103. 

  103. // CHECK:STDOUT:     %b: %array_type = bind_name b, %b.param
    104. 

  104. // CHECK:STDOUT:   }
    105. 

  105. // CHECK:STDOUT: }
    106. 

  106. // CHECK:STDOUT:
    107. 

  107. // CHECK:STDOUT: fn @F() -> %array_type;
    108. 

  108. // CHECK:STDOUT:
    109. 

  109. // CHECK:STDOUT: fn @G(%b.param_patt: %array_type) {
    110. 

  110. // CHECK:STDOUT: !entry:
    111. 

  111. // CHECK:STDOUT:   %pb.var: ref %ptr.2 = var pb
    112. 

  112. // CHECK:STDOUT:   %pb: ref %ptr.2 = bind_name pb, %pb.var
    113. 

  113. // CHECK:STDOUT:   %b.ref.loc19: %array_type = name_ref b, %b
    114. 

  114. // CHECK:STDOUT:   %int_0.loc19: Core.IntLiteral = int_value 0 [template = constants.%int_0.1]
    115. 

  115. // CHECK:STDOUT:   %int_32.loc19: Core.IntLiteral = int_value 32 [template = constants.%int_32]
    116. 

  116. // CHECK:STDOUT:   %i32.loc19: type = class_type @Int, @Int(constants.%int_32) [template = constants.%i32]
    117. 

  117. // CHECK:STDOUT:   %impl.elem0.loc19: %Convert.type.2 = interface_witness_access constants.%interface.5, element0 [template = constants.%Convert.10]
    118. 

  118. // CHECK:STDOUT:   %Convert.bound.loc19: <bound method> = bound_method %int_0.loc19, %impl.elem0.loc19 [template = constants.%Convert.bound.1]
    119. 

  119. // CHECK:STDOUT:   %Convert.specific_fn.loc19: <specific function> = specific_function %Convert.bound.loc19, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn.1]
    120. 

  120. // CHECK:STDOUT:   %int.convert_checked.loc19: init %i32 = call %Convert.specific_fn.loc19(%int_0.loc19) [template = constants.%int_0.2]
    121. 

  121. // CHECK:STDOUT:   %.loc19_21.1: %i32 = value_of_initializer %int.convert_checked.loc19 [template = constants.%int_0.2]
    122. 

  122. // CHECK:STDOUT:   %.loc19_21.2: %i32 = converted %int_0.loc19, %.loc19_21.1 [template = constants.%int_0.2]
    123. 

  123. // CHECK:STDOUT:   %.loc19_22.1: ref %array_type = value_as_ref %b.ref.loc19
    124. 

  124. // CHECK:STDOUT:   %.loc19_22.2: ref %i32 = array_index %.loc19_22.1, %.loc19_21.2
    125. 

  125. // CHECK:STDOUT:   %.loc19_22.3: %i32 = bind_value %.loc19_22.2
    126. 

  126. // CHECK:STDOUT:   %addr.loc19: %ptr.2 = addr_of <error> [template = <error>]
    127. 

  127. // CHECK:STDOUT:   assign %pb.var, %addr.loc19
    128. 

  128. // CHECK:STDOUT:   %b.ref.loc24: %array_type = name_ref b, %b
    129. 

  129. // CHECK:STDOUT:   %int_0.loc24: Core.IntLiteral = int_value 0 [template = constants.%int_0.1]
    130. 

  130. // CHECK:STDOUT:   %int_32.loc24: Core.IntLiteral = int_value 32 [template = constants.%int_32]
    131. 

  131. // CHECK:STDOUT:   %i32.loc24: type = class_type @Int, @Int(constants.%int_32) [template = constants.%i32]
    132. 

  132. // CHECK:STDOUT:   %impl.elem0.loc24_5: %Convert.type.2 = interface_witness_access constants.%interface.5, element0 [template = constants.%Convert.10]
    133. 

  133. // CHECK:STDOUT:   %Convert.bound.loc24_5: <bound method> = bound_method %int_0.loc24, %impl.elem0.loc24_5 [template = constants.%Convert.bound.1]
    134. 

  134. // CHECK:STDOUT:   %Convert.specific_fn.loc24_5: <specific function> = specific_function %Convert.bound.loc24_5, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn.1]
    135. 

  135. // CHECK:STDOUT:   %int.convert_checked.loc24_5: init %i32 = call %Convert.specific_fn.loc24_5(%int_0.loc24) [template = constants.%int_0.2]
    136. 

  136. // CHECK:STDOUT:   %.loc24_5.1: %i32 = value_of_initializer %int.convert_checked.loc24_5 [template = constants.%int_0.2]
    137. 

  137. // CHECK:STDOUT:   %.loc24_5.2: %i32 = converted %int_0.loc24, %.loc24_5.1 [template = constants.%int_0.2]
    138. 

  138. // CHECK:STDOUT:   %.loc24_6.1: ref %array_type = value_as_ref %b.ref.loc24
    139. 

  139. // CHECK:STDOUT:   %.loc24_6.2: ref %i32 = array_index %.loc24_6.1, %.loc24_5.2
    140. 

  140. // CHECK:STDOUT:   %.loc24_6.3: %i32 = bind_value %.loc24_6.2
    141. 

  141. // CHECK:STDOUT:   %int_4.loc24: Core.IntLiteral = int_value 4 [template = constants.%int_4.1]
    142. 

  142. // CHECK:STDOUT:   %impl.elem0.loc24_8: %Convert.type.2 = interface_witness_access constants.%interface.5, element0 [template = constants.%Convert.10]
    143. 

  143. // CHECK:STDOUT:   %Convert.bound.loc24_8: <bound method> = bound_method %int_4.loc24, %impl.elem0.loc24_8 [template = constants.%Convert.bound.2]
    144. 

  144. // CHECK:STDOUT:   %Convert.specific_fn.loc24_8: <specific function> = specific_function %Convert.bound.loc24_8, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn.2]
    145. 

  145. // CHECK:STDOUT:   %int.convert_checked.loc24_8: init %i32 = call %Convert.specific_fn.loc24_8(%int_4.loc24) [template = constants.%int_4.2]
    146. 

  146. // CHECK:STDOUT:   %.loc24_8: init %i32 = converted %int_4.loc24, %int.convert_checked.loc24_8 [template = constants.%int_4.2]
    147. 

  147. // CHECK:STDOUT:   assign %.loc24_6.3, %.loc24_8
    148. 

  148. // CHECK:STDOUT:   %pf.var: ref %ptr.2 = var pf
    149. 

  149. // CHECK:STDOUT:   %pf: ref %ptr.2 = bind_name pf, %pf.var
    150. 

  150. // CHECK:STDOUT:   %F.ref.loc32: %F.type = name_ref F, file.%F.decl [template = constants.%F]
    151. 

  151. // CHECK:STDOUT:   %.loc32_21.1: ref %array_type = temporary_storage
    152. 

  152. // CHECK:STDOUT:   %F.call.loc32: init %array_type = call %F.ref.loc32() to %.loc32_21.1
    153. 

  153. // CHECK:STDOUT:   %int_0.loc32: Core.IntLiteral = int_value 0 [template = constants.%int_0.1]
    154. 

  154. // CHECK:STDOUT:   %.loc32_21.2: ref %array_type = temporary %.loc32_21.1, %F.call.loc32
    155. 

  155. // CHECK:STDOUT:   %int_32.loc32: Core.IntLiteral = int_value 32 [template = constants.%int_32]
    156. 

  156. // CHECK:STDOUT:   %i32.loc32: type = class_type @Int, @Int(constants.%int_32) [template = constants.%i32]
    157. 

  157. // CHECK:STDOUT:   %impl.elem0.loc32: %Convert.type.2 = interface_witness_access constants.%interface.5, element0 [template = constants.%Convert.10]
    158. 

  158. // CHECK:STDOUT:   %Convert.bound.loc32: <bound method> = bound_method %int_0.loc32, %impl.elem0.loc32 [template = constants.%Convert.bound.1]
    159. 

  159. // CHECK:STDOUT:   %Convert.specific_fn.loc32: <specific function> = specific_function %Convert.bound.loc32, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn.1]
    160. 

  160. // CHECK:STDOUT:   %int.convert_checked.loc32: init %i32 = call %Convert.specific_fn.loc32(%int_0.loc32) [template = constants.%int_0.2]
    161. 

  161. // CHECK:STDOUT:   %.loc32_23.1: %i32 = value_of_initializer %int.convert_checked.loc32 [template = constants.%int_0.2]
    162. 

  162. // CHECK:STDOUT:   %.loc32_23.2: %i32 = converted %int_0.loc32, %.loc32_23.1 [template = constants.%int_0.2]
    163. 

  163. // CHECK:STDOUT:   %.loc32_24.1: ref %i32 = array_index %.loc32_21.2, %.loc32_23.2
    164. 

  164. // CHECK:STDOUT:   %.loc32_24.2: %i32 = bind_value %.loc32_24.1
    165. 

  165. // CHECK:STDOUT:   %addr.loc32: %ptr.2 = addr_of <error> [template = <error>]
    166. 

  166. // CHECK:STDOUT:   assign %pf.var, %addr.loc32
    167. 

  167. // CHECK:STDOUT:   %F.ref.loc36: %F.type = name_ref F, file.%F.decl [template = constants.%F]
    168. 

  168. // CHECK:STDOUT:   %.loc36_5.1: ref %array_type = temporary_storage
    169. 

  169. // CHECK:STDOUT:   %F.call.loc36: init %array_type = call %F.ref.loc36() to %.loc36_5.1
    170. 

  170. // CHECK:STDOUT:   %int_0.loc36: Core.IntLiteral = int_value 0 [template = constants.%int_0.1]
    171. 

  171. // CHECK:STDOUT:   %.loc36_5.2: ref %array_type = temporary %.loc36_5.1, %F.call.loc36
    172. 

  172. // CHECK:STDOUT:   %int_32.loc36: Core.IntLiteral = int_value 32 [template = constants.%int_32]
    173. 

  173. // CHECK:STDOUT:   %i32.loc36: type = class_type @Int, @Int(constants.%int_32) [template = constants.%i32]
    174. 

  174. // CHECK:STDOUT:   %impl.elem0.loc36_7: %Convert.type.2 = interface_witness_access constants.%interface.5, element0 [template = constants.%Convert.10]
    175. 

  175. // CHECK:STDOUT:   %Convert.bound.loc36_7: <bound method> = bound_method %int_0.loc36, %impl.elem0.loc36_7 [template = constants.%Convert.bound.1]
    176. 

  176. // CHECK:STDOUT:   %Convert.specific_fn.loc36_7: <specific function> = specific_function %Convert.bound.loc36_7, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn.1]
    177. 

  177. // CHECK:STDOUT:   %int.convert_checked.loc36_7: init %i32 = call %Convert.specific_fn.loc36_7(%int_0.loc36) [template = constants.%int_0.2]
    178. 

  178. // CHECK:STDOUT:   %.loc36_7.1: %i32 = value_of_initializer %int.convert_checked.loc36_7 [template = constants.%int_0.2]
    179. 

  179. // CHECK:STDOUT:   %.loc36_7.2: %i32 = converted %int_0.loc36, %.loc36_7.1 [template = constants.%int_0.2]
    180. 

  180. // CHECK:STDOUT:   %.loc36_8.1: ref %i32 = array_index %.loc36_5.2, %.loc36_7.2
    181. 

  181. // CHECK:STDOUT:   %.loc36_8.2: %i32 = bind_value %.loc36_8.1
    182. 

  182. // CHECK:STDOUT:   %int_4.loc36: Core.IntLiteral = int_value 4 [template = constants.%int_4.1]
    183. 

  183. // CHECK:STDOUT:   %impl.elem0.loc36_10: %Convert.type.2 = interface_witness_access constants.%interface.5, element0 [template = constants.%Convert.10]
    184. 

  184. // CHECK:STDOUT:   %Convert.bound.loc36_10: <bound method> = bound_method %int_4.loc36, %impl.elem0.loc36_10 [template = constants.%Convert.bound.2]
    185. 

  185. // CHECK:STDOUT:   %Convert.specific_fn.loc36_10: <specific function> = specific_function %Convert.bound.loc36_10, @Convert.2(constants.%int_32) [template = constants.%Convert.specific_fn.2]
    186. 

  186. // CHECK:STDOUT:   %int.convert_checked.loc36_10: init %i32 = call %Convert.specific_fn.loc36_10(%int_4.loc36) [template = constants.%int_4.2]
    187. 

  187. // CHECK:STDOUT:   %.loc36_10: init %i32 = converted %int_4.loc36, %int.convert_checked.loc36_10 [template = constants.%int_4.2]
    188. 

  188. // CHECK:STDOUT:   assign %.loc36_8.2, %.loc36_10
    189. 

  189. // CHECK:STDOUT:   return
    190. 

  190. // CHECK:STDOUT: }
    191. 

  191. // CHECK:STDOUT:
    192.