[all-commits] [llvm/llvm-project] fd2475: Revert "C++/ObjC++: switch to gnu++17 as the defau...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fd2475049e882e6c70a745cbe0799749ba184910
      https://github.com/llvm/llvm-project/commit/fd2475049e882e6c70a745cbe0799749ba184910
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2022-09-08 (Thu, 08 Sep 2022)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/lib/Basic/LangStandards.cpp
    R clang/test/Preprocessor/lang-std.cpp
    A clang/test/Preprocessor/lang-std.cu
    M clang/test/lit.cfg.py
    M clang/test/lit.site.cfg.py.in

  Log Message:
  -----------
  Revert "C++/ObjC++: switch to gnu++17 as the default standard"

This reverts commit e321c8dd2cea8365045ed44ae1c3c00c6a977d2e.

This causes many failures in llvm-test-suite, for example:

    /home/npopov/repos/llvm-test-suite/build-O3/tools/timeit --summary MultiSource/Applications/lambda-0.1.3/CMakeFiles/lambda.dir/token_stream.cc.o.time /home/npopov/repos/llvm-project/build/bin/clang++ -DNDEBUG -I/home/npopov/repos/llvm-test-suite/MultiSource/Applications/lambda-0.1.3 -O3   -w -Werror=date-time -MD -MT MultiSource/Applications/lambda-0.1.3/CMakeFiles/lambda.dir/token_stream.cc.o -MF MultiSource/Applications/lambda-0.1.3/CMakeFiles/lambda.dir/token_stream.cc.o.d -o MultiSource/Applications/lambda-0.1.3/CMakeFiles/lambda.dir/token_stream.cc.o -c /home/npopov/repos/llvm-test-suite/MultiSource/Applications/lambda-0.1.3/token_stream.cc
    /home/npopov/repos/llvm-test-suite/MultiSource/Applications/lambda-0.1.3/token_stream.cc:192:2: error: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
            register char chr;
            ^~~~~~~~~