#19
nsd/tclcache.c:879: error: Null Dereference
  pointer `cPtr` last assigned on line 829 could be null and is dereferenced at line 879, column 22.

nsd/tclcache.c:826:1: start of procedure NsTclCacheKeysObjCmd()
824. 
825. 
826. int
     ^
827. NsTclCacheKeysObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const* objv)
828. {

nsd/tclcache.c:829:5: 
827. NsTclCacheKeysObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const* objv)
828. {
829.     TclCache        *cPtr = NULL;
         ^
830.     const Ns_Entry  *entry;
831.     char            *pattern = NULL;

nsd/tclcache.c:831:5: 
829.     TclCache        *cPtr = NULL;
830.     const Ns_Entry  *entry;
831.     char            *pattern = NULL;
         ^
832.     int              exact = (int)NS_FALSE, result = TCL_OK;
833.     const NsInterp  *itPtr = clientData;

nsd/tclcache.c:832:5: 
830.     const Ns_Entry  *entry;
831.     char            *pattern = NULL;
832.     int              exact = (int)NS_FALSE, result = TCL_OK;
         ^
833.     const NsInterp  *itPtr = clientData;
834.     const Ns_CacheTransactionStack *transactionStackPtr = &itPtr->cacheTransactionStack;

nsd/tclcache.c:833:5: 
831.     char            *pattern = NULL;
832.     int              exact = (int)NS_FALSE, result = TCL_OK;
833.     const NsInterp  *itPtr = clientData;
         ^
834.     const Ns_CacheTransactionStack *transactionStackPtr = &itPtr->cacheTransactionStack;
835. 

nsd/tclcache.c:834:5: 
832.     int              exact = (int)NS_FALSE, result = TCL_OK;
833.     const NsInterp  *itPtr = clientData;
834.     const Ns_CacheTransactionStack *transactionStackPtr = &itPtr->cacheTransactionStack;
         ^
835. 
836.     Ns_ObjvSpec opts[] = {

nsd/tclcache.c:836:5: 
834.     const Ns_CacheTransactionStack *transactionStackPtr = &itPtr->cacheTransactionStack;
835. 
836.     Ns_ObjvSpec opts[] = {
         ^
837.         {"-exact",   Ns_ObjvBool,  &exact,     INT2PTR(NS_TRUE)},
838.         {"--",       Ns_ObjvBreak, NULL,       NULL},

nsd/tclcache.c:841:5: 
839.         {NULL, NULL, NULL, NULL}
840.     };
841.     Ns_ObjvSpec args[] = {
         ^
842.         {"cache",    ObjvCache,     &cPtr,    clientData},
843.         {"?pattern", Ns_ObjvString, &pattern, NULL},

nsd/tclcache.c:846:5: 
844.         {NULL, NULL, NULL, NULL}
845.     };
846.     args[0].arg = clientData; /* pass non-constant clientData for "cache" */
         ^
847. 
848.     if (Ns_ParseObjv(opts, args, interp, 1, objc, objv) != NS_OK) {

nsd/tclcache.c:848:9: Taking false branch
846.     args[0].arg = clientData; /* pass non-constant clientData for "cache" */
847. 
848.     if (Ns_ParseObjv(opts, args, interp, 1, objc, objv) != NS_OK) {
             ^
849.         result = TCL_ERROR;
850. 

nsd/tclcache.c:851:16: Taking false branch
849.         result = TCL_ERROR;
850. 
851.     } else if (pattern != NULL && (exact != 0 || noGlobChars(pattern))) {
                    ^
852.         Tcl_Obj  *listObj = Tcl_NewListObj(0, NULL);
853. 

nsd/tclcache.c:871:9: Skipping Tcl_NewListObj(): method has no implementation
869.     } else {
870.         Ns_CacheSearch  search;
871.         Tcl_Obj        *listObj = Tcl_NewListObj(0, NULL);
             ^
872. 
873.         /*

nsd/tclcache.c:878:9: 
876.          * take a while for large caches.
877.          */
878.         assert(cPtr != NULL);
             ^
879.         Ns_CacheLock(cPtr->cache);
880.         entry = Ns_CacheFirstEntryT(cPtr->cache, &search, transactionStackPtr);

nsd/tclcache.c:879:9: 
877.          */
878.         assert(cPtr != NULL);
879.         Ns_CacheLock(cPtr->cache);
             ^
880.         entry = Ns_CacheFirstEntryT(cPtr->cache, &search, transactionStackPtr);
881.         while (entry != NULL) {