Files
carbon-lang/toolchain/check/testdata/array/fail_bound_overflow.carbon
T
Dana Jansens 417b3833e2 Produce helpful diagnostics when converting to a facet fails (#5109)
When converting to a facet there are three different failure modes:

1. You provided a non-type value. Only types can convert to facets. So
we tell you that we found a non-type value.
2. You provided a facet type (which has type TypeType) which does not
have witnesses for the the target facet's type. So we tell you that the
type `T` implements `X` but needs to implement `Y`.
2. You provided a (non-facet-type) concrete type (of type TypeType)
which does not implement the target facet's type (which is a FacetType).
So we tell you that we need the type to implement the FacetType but it
does not.
3. You provided a FacetAccessType (which is of type TypeType also, but
we special case this), whose underlying FacetType is not compatible with
the target facet's type. So we tell you that we need the type to
implement `X` but found a FacetAccessType `T` which implements `Y`.

Closes #5027
2025-03-14 15:50:03 +00:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/array/fail_bound_overflow.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/array/fail_bound_overflow.carbon
// CHECK:STDERR: fail_bound_overflow.carbon:[[@LINE+4]]:8: error: array bound of 39999999999999999993 is too large [ArrayBoundTooLarge]
// CHECK:STDERR: var a: array(i32, 39999999999999999993);
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
var a: array(i32, 39999999999999999993);
// CHECK:STDERR: fail_bound_overflow.carbon:[[@LINE+7]]:14: error: cannot implicitly convert non-type value of type `Core.IntLiteral` to `type` [ConversionFailureNonTypeToFacet]
// CHECK:STDERR: var b: array(1, 39999999999999999993);
// CHECK:STDERR: ^
// CHECK:STDERR: fail_bound_overflow.carbon:[[@LINE+4]]:14: note: type `Core.IntLiteral` does not implement interface `Core.ImplicitAs(type)` [MissingImplInMemberAccessNote]
// CHECK:STDERR: var b: array(1, 39999999999999999993);
// CHECK:STDERR: ^
// CHECK:STDERR:
var b: array(1, 39999999999999999993);
// CHECK:STDOUT: --- fail_bound_overflow.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %int_39999999999999999993: Core.IntLiteral = int_value 39999999999999999993 [concrete]
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: .ImplicitAs = %Core.ImplicitAs
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .a = %a
// CHECK:STDOUT: .b = %b
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %a.patt: <error> = binding_pattern a
// CHECK:STDOUT: %.loc15_1: <error> = var_pattern %a.patt
// CHECK:STDOUT: }
// CHECK:STDOUT: %a.var: ref <error> = var a
// CHECK:STDOUT: %.loc15_39: type = splice_block %array_type.loc15 [concrete = <error>] {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %int_39999999999999999993.loc15: Core.IntLiteral = int_value 39999999999999999993 [concrete = constants.%int_39999999999999999993]
// CHECK:STDOUT: %array_type.loc15: type = array_type %int_39999999999999999993.loc15, %i32 [concrete = <error>]
// CHECK:STDOUT: }
// CHECK:STDOUT: %a: <error> = bind_name a, <error>
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %b.patt: <error> = binding_pattern b
// CHECK:STDOUT: %.loc24_1: <error> = var_pattern %b.patt
// CHECK:STDOUT: }
// CHECK:STDOUT: %b.var: ref <error> = var b
// CHECK:STDOUT: %.loc24_37: type = splice_block %array_type.loc24 [concrete = <error>] {
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete = constants.%int_1]
// CHECK:STDOUT: %int_39999999999999999993.loc24: Core.IntLiteral = int_value 39999999999999999993 [concrete = constants.%int_39999999999999999993]
// CHECK:STDOUT: %.loc24_14: type = converted %int_1, <error> [concrete = <error>]
// CHECK:STDOUT: %array_type.loc24: type = array_type %int_39999999999999999993.loc24, <error> [concrete = <error>]
// CHECK:STDOUT: }
// CHECK:STDOUT: %b: <error> = bind_name b, <error>
// CHECK:STDOUT: }
// CHECK:STDOUT: