View Compilation Error

0_0_24688614_24891.cpp: In function 'sam* new_sam(sam*)':
0_0_24688614_24891.cpp:53:44: error: invalid conversion from 'int' to 'sam*' [-fpermissive]
 else memset(p->ch, 0, sizeof(p->ch)), p->f = p->l = 0;
                                            ^