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Re: [Consult] g++: About "-Wunused-variable" for constant variable initialized by function


On 10/12/2014 10:32 AM, Chen Gang wrote:
   [root@localhost qemu_cc]# cat test.cc
   const char n() { return 1; }
   const char c =  n();
   [root@localhost qemu_cc]# /usr/local/bin/g++ -Wall -O0 -c -o test.o test.cc
   [root@localhost qemu_cc]# /usr/local/bin/g++ -Wall -O2 -c -o test.o test.cc
   test.cc:2:12: warning: 'c' defined but not used [-Wunused-variable]
    const char c =  n();
               ^

The warning is correct (and new). Please submit bug reports via the website; see https://gcc.gnu.org/bugs/

Jason



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