[PATCH] D30327: [Sema] Improve side effect checking for unused-lambda-capture warning

[Malcolm Parsons via Phabricator via cfe-commits]

malcolm.parsons created this revision.

Don't warn about unused lambda captures that involve copying a
value of a type that cannot be trivially copied and destroyed.

Fixes PR31977


https://reviews.llvm.org/D30327

Files:
  include/clang/Sema/Sema.h
  lib/Sema/SemaLambda.cpp
  test/SemaCXX/warn-unused-lambda-capture.cpp

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