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[clang-tidy] Fix null pointer dereference in readability-identifier-naming Summary: readability-identifier-naming causes a null pointer dereference when checking an identifier introduced by a structured binding whose right hand side is an undeclared identifier. Running the check on a file that is just the following results in a crash: ``` auto [left] = right; ``` Patch by Mark Stegeman! Reviewers: alexfh, hokein, aaron.ballman, JonasToth Reviewed By: hokein, aaron.ballman Subscribers: madsravn, xazax.hun, cfe-commits Tags: #clang-tools-extra, #clang Differential Revision: https://reviews.llvm.org/D62404 llvm-svn: 361809
2019-05-28 19:54:01 +08:00
// RUN: %check_clang_tidy -expect-clang-tidy-error %s readability-identifier-naming %t
// This used to cause a null pointer dereference.
auto [left] = right;
// CHECK-MESSAGES: :[[@LINE-1]]:15: error: use of undeclared identifier 'right'