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Author

anonymous

over 6 years ago

Language

C++

Compiler

gcc HEAD 9.0.0 20181226 (experimental)

Options
Warnings
Boost 1.69.0
C++2a(GNU)
no pedantic

Author

anonymous

over 6 years ago

$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.69.0/gcc-head/include -std=gnu++2a
prog.cc:11:34: error: 'ptrdiff_t' in namespace 'foo::std' does not name a type
   11 |     using difference_type = std::ptrdiff_t;
      |                                  ^~~~~~~~~
Exit Code:
1