[all-commits] [llvm/llvm-project] 19b4d3: [lldb] Don't emit a warning when using Objective-C...

[Raphael Isemann via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 19b4d3ce27d5c8ed19bf08cdceb4c03608d2c66d
      https://github.com/llvm/llvm-project/commit/19b4d3ce27d5c8ed19bf08cdceb4c03608d2c66d
  Author: Raphael Isemann <teemperor at gmail.com>
  Date:   2021-02-11 (Thu, 11 Feb 2021)

  Changed paths:
    M lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionParser.cpp
    A lldb/test/API/lang/objc/warnings-in-expr-parser/Makefile
    A lldb/test/API/lang/objc/warnings-in-expr-parser/TestObjCWarningsInExprParser.py
    A lldb/test/API/lang/objc/warnings-in-expr-parser/main.m

  Log Message:
  -----------
  [lldb] Don't emit a warning when using Objective-C getters in expressions

Clang emits a warning when accessing an Objective-C getter but not using the result.
This gets triggered when just trying to print a getter value in the expression parser (where
Clang just sees a normal expression like `obj.getter` while parsing).

This patch just disables the warning in the expression parser (similar to what we do with
the C++ equivalent of just accessing a member variable but not doing anything with it).

Reviewed By: kastiglione

Differential Revision: https://reviews.llvm.org/D94307