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Chapter 5. Changes in LLVM Toolset


LLVM Toolset has been updated from version 12.0.1 to 13.0.1 on RHEL 7 and RHEL 8. RHEL 9 is distributed with LLVM Toolset 13.0.1. Notable changes include:

  • Clang now supports guaranteed tail calls with statement attributes in C++ and attributemusttail in C.
  • Clang now supports the -Wreserved-identifier warning, which warns developers when using reserved identifiers in their code.
  • Clang’s -Wshadow flag now also checks for shadowed structured bindings.
  • Clang’s -Wextra now also implies -Wnull-pointer-subtraction.

For detailed information regarding the updates, see the upstream LLVM 13.0.0 Release Notes.

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