/in/foo.cc: In function 'std::__cxx11::string sub(char*, char*)':
/in/foo.cc:39:5: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
     while(!na[--lmax]&&lmax>0)  ;lmax++;
     ^~~~~
/in/foo.cc:39:34: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
     while(!na[--lmax]&&lmax>0)  ;lmax++;
                                  ^~~~