View Compilation Error

0_0_39179044_15311.cpp: In function 'int cmp(const void*, const void*)':
0_0_39179044_15311.cpp:10:18: error: invalid conversion from 'const void*' to 'const node*' [-fpermissive]
   10 | const node *pa = p1;
      |                  ^~
      |                  |
      |                  const void*
0_0_39179044_15311.cpp:11:18: error: invalid conversion from 'const void*' to 'const node*' [-fpermissive]
   11 | const node *pb = p2;
      |                  ^~
      |                  |
      |                  const void*