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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>
47 lines
2.0 KiB
Plaintext
47 lines
2.0 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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// This test is validating that the delayed error flush doesn't break on string
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// lifetimes.
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//
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// ARGS: --include-diagnostic-kind compile --no-prelude-import %s
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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/driver/testdata/fail_flush_errors.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/driver/testdata/fail_flush_errors.carbon
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fn F() {
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// Create diagnostics containing string references, and trigger reallocation
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// of the string table.
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// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: name `undeclared1` not found [NameNotFound]
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// CHECK:STDERR: undeclared1;
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// CHECK:STDERR: ^~~~~~~~~~~
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// CHECK:STDERR:
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undeclared1;
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// Add the name into the string table from the tokenized buffer's string
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// literal storage. Use a hex escape to ensure that the tokenized buffer
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// allocates separate storage for the result.
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// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: `Core.String` implicitly referenced here, but package `Core` not found [CoreNotFound]
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// CHECK:STDERR: "undec\x6Cared2";
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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"undec\x6Cared2";
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// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: name `undeclared2` not found [NameNotFound]
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// CHECK:STDERR: undeclared2;
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// CHECK:STDERR: ^~~~~~~~~~~
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// CHECK:STDERR:
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undeclared2;
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// Add the name into the string table via a declaration rather than an expression.
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if (true) { let unused undeclared3: () = (); }
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// CHECK:STDERR: fail_flush_errors.carbon:[[@LINE+4]]:3: error: name `undeclared3` not found [NameNotFound]
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// CHECK:STDERR: undeclared3;
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// CHECK:STDERR: ^~~~~~~~~~~
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// CHECK:STDERR:
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undeclared3;
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}
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