Wandbox

Ran/Viewed Log

Author

anonymous

over 7 years ago

Language

C++

Compiler

gcc HEAD 8.0.0 20170830 (experimental)

Options

Boost 1.65.0

C++1z(GNU)

no pedantic

Raw compiler options

-Wall
-Wextra
-Wuseless-cast

Author

anonymous

over 7 years ago

$ g++ prog.cc -I/opt/wandbox/boost-1.65.0/gcc-head/include -std=gnu++1z -Wall -Wextra -Wuseless-cast

prog.cc:2:29: error: pasting ""GCC diagnostic ignored "" and ""-Wuseless-cast"" does not give a valid preprocessing token
 #define SUPPRESS(w) _Pragma("GCC diagnostic ignored " ## w)
                             ^~~~~~~~~~~~~~~~~~~~~~~~~
prog.cc:4:1: note: in expansion of macro 'SUPPRESS'
 SUPPRESS("-Wuseless-cast")
 ^~~~~~~~
prog.cc:4:1: error: _Pragma takes a parenthesized string literal
 SUPPRESS("-Wuseless-cast")
 ^~~~~~~~~~~~~~~~~~~~~~~~~
prog.cc:2:21: error: '_Pragma' does not name a type
 #define SUPPRESS(w) _Pragma("GCC diagnostic ignored " ## w)
                     ^~~~~~~
prog.cc:4:1: note: in expansion of macro 'SUPPRESS'
 SUPPRESS("-Wuseless-cast")
 ^~~~~~~~

Exit Code:

1