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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>
44 lines
1.6 KiB
Plaintext
44 lines
1.6 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/destroy.carbon
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// EXTRA-ARGS: --dump-sem-ir-ranges=only
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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/operators/builtin/ref.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/operators/builtin/ref.carbon
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// --- fail_discarded_ref.carbon
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library "[[@TEST_NAME]]";
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fn F() {
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var x: () = ();
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// CHECK:STDERR: fail_discarded_ref.carbon:[[@LINE+4]]:3: error: `ref` tag is not an argument to a `ref` parameter [RefTagNoRefParam]
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// CHECK:STDERR: ref x;
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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ref x;
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}
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// --- fail_ref_out_of_place.carbon
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library "[[@TEST_NAME]]";
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fn F() {
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var x: () = ();
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// CHECK:STDERR: fail_ref_out_of_place.carbon:[[@LINE+4]]:22: error: `ref` tag is not an argument to a `ref` parameter [RefTagNoRefParam]
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// CHECK:STDERR: let unused y: () = ref x;
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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let unused y: () = ref x;
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// CHECK:STDERR: fail_ref_out_of_place.carbon:[[@LINE+4]]:23: error: `ref` tag is not an argument to a `ref` parameter [RefTagNoRefParam]
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// CHECK:STDERR: let unused z: () = (ref x);
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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let unused z: () = (ref x);
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}
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