260   pOp->p4.p = 0;  in sqlite3VdbeAddOp3()
460     sqlite3ExplainBreakpoint(bPush?"PUSH":"", sqlite3VdbeGetLastOp(v)->p4.z);  in sqlite3VdbeExplain()
501   int p4              /* The P4 operand as an integer */  in sqlite3VdbeAddOp4Int()  argument
507     pOp->p4.i = p4;  in sqlite3VdbeAddOp4Int()
669         if( p->apSub[j]==pRet->p4.pProgram ) break;  in opIterNext()
676           p->apSub[p->nSub++] = pRet->p4.pProgram;  in opIterNext()
1085     pOut->p4.p = 0;  in sqlite3VdbeAddOpList()
1230 static void freeP4(sqlite3 *db, int p4type, void *p4){  in freeP4()  argument
1234       freeP4FuncCtx(db, (sqlite3_context*)p4);  in freeP4()
1241       if( p4 ) sqlite3DbNNFreeNN(db, p4);  in freeP4()
1245       if( db->pnBytesFreed==0 ) sqlite3KeyInfoUnref((KeyInfo*)p4);  in freeP4()
1250       sqlite3ExprDelete(db, (Expr*)p4);  in freeP4()
1255       freeEphemeralFunction(db, (FuncDef*)p4);  in freeP4()
1260         sqlite3ValueFree((sqlite3_value*)p4);  in freeP4()
1262         freeP4Mem(db, (Mem*)p4);  in freeP4()
1267       if( db->pnBytesFreed==0 ) sqlite3VtabUnlock((VTable *)p4);  in freeP4()
1284       if( pOp->p4type <= P4_FREE_IF_LE ) freeP4(db, pOp->p4type, pOp->p4.p);  in vdbeFreeOpArray()
1320   freeP4(p->db, pOp->p4type, pOp->p4.p);  in sqlite3VdbeChangeToNoop()
1322   pOp->p4.z = 0;  in sqlite3VdbeChangeToNoop()
1398     freeP4(p->db, pOp->p4type, pOp->p4.p);  in vdbeChangeP4Full()
1400     pOp->p4.p = 0;  in vdbeChangeP4Full()
1406     pOp->p4.z = sqlite3DbStrNDup(p->db, zP4, n);  in vdbeChangeP4Full()
1434     pOp->p4.i = SQLITE_PTR_TO_INT(zP4);  in sqlite3VdbeChangeP4()
1438     pOp->p4.p = (void*)zP4;  in sqlite3VdbeChangeP4()
1465     pOp->p4.p = pP4;  in sqlite3VdbeAppendP4()
1567   if( c=='4' ) return pOp->p4.i;  in translateP()
1634             sqlite3_context *pCtx = pOp->p4.pCtx;  in sqlite3VdbeDisplayComment()
1757       KeyInfo *pKeyInfo = pOp->p4.pKeyInfo;  in sqlite3VdbeDisplayP4()
1774       displayP4Expr(&x, pOp->p4.pExpr);  in sqlite3VdbeDisplayP4()
1780       CollSeq *pColl = pOp->p4.pColl;  in sqlite3VdbeDisplayP4()
1787       FuncDef *pDef = pOp->p4.pFunc;  in sqlite3VdbeDisplayP4()
1792       FuncDef *pDef = pOp->p4.pCtx->pFunc;  in sqlite3VdbeDisplayP4()
1797       sqlite3_str_appendf(&x, "%lld", *pOp->p4.pI64);  in sqlite3VdbeDisplayP4()
1801       sqlite3_str_appendf(&x, "%d", pOp->p4.i);  in sqlite3VdbeDisplayP4()
1805       sqlite3_str_appendf(&x, "%.16g", *pOp->p4.pReal);  in sqlite3VdbeDisplayP4()
1809       Mem *pMem = pOp->p4.pMem;  in sqlite3VdbeDisplayP4()
1826       sqlite3_vtab *pVtab = pOp->p4.pVtab->pVtab;  in sqlite3VdbeDisplayP4()
1833       u32 *ai = pOp->p4.ai;  in sqlite3VdbeDisplayP4()
1847       zP4 = pOp->p4.pTab->zName;  in sqlite3VdbeDisplayP4()
1851       zP4 = pOp->p4.z;  in sqlite3VdbeDisplayP4()
2164         if( apSub[j]==aOp[i].p4.pProgram ) break;  in sqlite3VdbeNextOpcode()
2173         apSub[nSub++] = aOp[i].p4.pProgram;  in sqlite3VdbeNextOpcode()
2176         nRow += aOp[i].p4.pProgram->nOp;  in sqlite3VdbeNextOpcode()
2340     if( pOp->opcode==OP_Init && pOp->p4.z!=0 ){  in sqlite3VdbePrintSql()
2341       z = pOp->p4.z;  in sqlite3VdbePrintSql()
2359   if( pOp->opcode==OP_Init && pOp->p4.z!=0 ){  in sqlite3VdbeIOTraceSql()
2362     sqlite3_snprintf(sizeof(z), z, "%s", pOp->p4.z);  in sqlite3VdbeIOTraceSql()