/in/foo.cc: In function 'bool operator<(Data&, Data&)':
/in/foo.cc:31:17: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   31 |                 if(a.y==b.y)
      |                 ^~
/in/foo.cc:34:25: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   34 |                         return a.m<b.m;
      |                         ^~~~~~