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fdb188ccfd
Implementation of unused pattern bindings #2022, continued. Whereas previous PR #6460 took care of parsing, and PR #6479 prepared the stage by using _ in some test cases, this PR has the the actual implementation, using a simple dataflow analysis. --------- Co-authored-by: Burak Emir <bqe@google.com> Co-authored-by: jonmeow <jperkins@google.com>
38 lines
1.9 KiB
Plaintext
38 lines
1.9 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/convert.carbon
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/class/fail_generic_method.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/fail_generic_method.carbon
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class I {}
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class Class(T:! type) {
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var a: T;
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fn F[self: Self](n: T);
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}
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// TODO: The follow-on errors here aren't great. Investigate whether we can
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// enter the scope anyway if the parameters don't match.
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// CHECK:STDERR: fail_generic_method.carbon:[[@LINE+15]]:17: error: type `<pattern for I>` of parameter 1 in redeclaration differs from previous parameter type `<pattern for type>` [RedeclParamDiffersType]
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// CHECK:STDERR: fn Class(unused N:! I).F[unused self: Self](unused n: T) {}
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// CHECK:STDERR: ^
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// CHECK:STDERR: fail_generic_method.carbon:[[@LINE-10]]:13: note: previous declaration's corresponding parameter here [RedeclParamPrevious]
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// CHECK:STDERR: class Class(T:! type) {
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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// CHECK:STDERR: fail_generic_method.carbon:[[@LINE+8]]:39: error: name `Self` not found [NameNotFound]
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// CHECK:STDERR: fn Class(unused N:! I).F[unused self: Self](unused n: T) {}
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// CHECK:STDERR: ^~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_generic_method.carbon:[[@LINE+4]]:55: error: name `T` not found [NameNotFound]
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// CHECK:STDERR: fn Class(unused N:! I).F[unused self: Self](unused n: T) {}
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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fn Class(unused N:! I).F[unused self: Self](unused n: T) {}
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