[PATCH] D125272: [clang] Add -fcheck-new support

[Pedro Falcato via Phabricator via cfe-commits]

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Add -fcheck-new and -fno-check-new, from GCC, which make the compiler
not assume pointers returned from operator new are non-null.
Fixes #16931.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D125272

Files:
  clang/include/clang/Basic/LangOptions.def
  clang/include/clang/Basic/LangOptions.h
  clang/include/clang/Driver/Options.td
  clang/lib/AST/ExprCXX.cpp
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/lib/Frontend/CompilerInvocation.cpp
  clang/lib/Sema/SemaDecl.cpp
  clang/lib/Sema/SemaExprCXX.cpp
  clang/test/CodeGenCXX/fcheck-new.cpp
  clang/test/Driver/clang_f_opts.c

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