/in/foo.cc: In function 'void Pre()':
/in/foo.cc:21:3: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
   while(tag[p]) p++;SG[i]=p;
   ^~~~~
/in/foo.cc:21:21: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while'
   while(tag[p]) p++;SG[i]=p;
                     ^~