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Implement unused pattern bindings, continued (#6518)

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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>
This commit is contained in:
Burak Emir
2026-02-19 23:33:36 +00:00
committed by GitHub
co-authored by Burak Emir jonmeow
parent bea24a8bee
commit fdb188ccfd
366 changed files with 8453 additions and 7996 deletions
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toolchain/check/testdata/function/call/fail_not_callable.carbon
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+4 -4
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@@ -11,9 +11,9 @@
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/function/call/fail_not_callable.carbon
fn Run() {
// CHECK:STDERR: fail_not_callable.carbon:[[@LINE+4]]:16: error: value of type `str` is not callable [CallToNonCallable]
// CHECK:STDERR: var x: i32 = "hello"();
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR: fail_not_callable.carbon:[[@LINE+4]]:23: error: value of type `str` is not callable [CallToNonCallable]
// CHECK:STDERR: var unused x: i32 = "hello"();
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR:
var x: i32 = "hello"();
var unused x: i32 = "hello"();
}