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| author | Malcolm Parsons <malcolm.parsons@gmail.com> | 2017-12-11 18:00:36 +0000 |
|---|---|---|
| committer | Malcolm Parsons <malcolm.parsons@gmail.com> | 2017-12-11 18:00:36 +0000 |
| commit | 84bf555dbe0c7836c8f67eea29a7cc9390b897bf (patch) | |
| tree | e7c5e83fcf7e078e39a66a7fb43b5d8e69d3b1b1 /test/SemaCXX | |
| parent | 20a630420df42944fa7676747f31973bf2021783 (diff) | |
[Sema] Fix crash in unused-lambda-capture warning for VLAs
Summary:
Clang was crashing when diagnosing an unused-lambda-capture for a VLA because
From.getVariable() is null for the capture of a VLA bound.
Warning about the VLA bound capture is not helpful, so only warn for the VLA
itself.
Fixes: PR35555
Reviewers: aaron.ballman, dim, rsmith
Reviewed By: aaron.ballman, dim
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D41016
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@320396 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/SemaCXX')
| -rw-r--r-- | test/SemaCXX/warn-unused-lambda-capture.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test/SemaCXX/warn-unused-lambda-capture.cpp b/test/SemaCXX/warn-unused-lambda-capture.cpp index 6ad8e26604..52ec390b0b 100644 --- a/test/SemaCXX/warn-unused-lambda-capture.cpp +++ b/test/SemaCXX/warn-unused-lambda-capture.cpp @@ -191,3 +191,12 @@ void test_templated() { void test_use_template() { test_templated<int>(); // expected-note{{in instantiation of function template specialization 'test_templated<int>' requested here}} } + +namespace pr35555 { +int a; +void b() { + int c[a]; + auto vla_used = [&c] { return c[0]; }; + auto vla_unused = [&c] {}; // expected-warning{{lambda capture 'c' is not used}} +} +} // namespace pr35555 |