/in/foo.cc: In member function 'double expr::getnum(int, int)':
/in/foo.cc:7:4: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    for (int i=l;i<=r;i++)
    ^~~
/in/foo.cc:9:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
     return (double)ret;
     ^~~~~~