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Language

C++

Compiler

gcc HEAD 11.0.0 20200908 (experimental)

Options
Warnings
Boost 1.73.0
C++2a(GNU)
no pedantic
Raw compiler options
-Wno-macro-redefined

$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.73.0/gcc-head/include -std=gnu++2a -Wno-macro-redefined
prog.cc:7: warning: "TEST" redefined
    7 | #define TEST "test2"   // C4005 delete or rename to resolve the warning
      | 
prog.cc:6: note: this is the location of the previous definition
    6 | #define TEST "test1"
      | 
cc1plus: note: unrecognized command-line option '-Wno-macro-redefined' may have been intended to silence earlier diagnostics

test2
Exit Code:
0