Hey Valerii, it's Paul :D

Anyhow, I would really like to affirm that the fix I have above is the fix.

Base in the code in terminal.c.

...
 865 protected int
 866 terminal_set(EditLine *el, const char *term)
 867 {
 868         int i;
 869         char buf[TC_BUFSIZE];
 870         char *area;
 871         const struct termcapstr *t;
 872         sigset_t oset, nset;
 873         int lins, cols;
 874 
 875         (void) sigemptyset(&nset);
 876         (void) sigaddset(&nset, SIGWINCH);
 877         (void) sigprocmask(SIG_BLOCK, &nset, &oset);
 878 
 879         area = buf;
 880 
 881 
 882         if (term == NULL)
 883                 term = getenv("TERM");
 884 
 885         if (!term || !term[0])
 886                 term = "dumb";
 887 
 888         if (strcmp(term, "emacs") == 0)
 889                 el->el_flags |= EDIT_DISABLED;
 890 
 891         memset(el->el_terminal.t_cap, 0, TC_BUFSIZE);
 892 
 893         i = tgetent(el->el_terminal.t_cap, term);
 894 
 895         if (i <= 0) {
 896                 if (i == -1)
 897                         (void) fprintf(el->el_errfile,
 898                             "Cannot read termcap database;\n");
 899                 else if (i == 0)
 900                         (void) fprintf(el->el_errfile,
 901                             "No entry for terminal type \"%s\";\n", term);
 902                 (void) fprintf(el->el_errfile,
 903                     "using dumb terminal settings.\n");
 904                 Val(T_co) = 80; /* do a dumb terminal */
 905                 Val(T_pt) = Val(T_km) = Val(T_li) = 0;
 906                 Val(T_xt) = Val(T_MT);
 907                 for (t = tstr; t->name != NULL; t++)
 908                         terminal_alloc(el, t, NULL);
 909         } else {
 910                 /* auto/magic margins */
 911                 Val(T_am) = tgetflag("am");
 912                 Val(T_xn) = tgetflag("xn");
 913                 /* Can we tab */
 914                 Val(T_pt) = tgetflag("pt");
 915                 Val(T_xt) = tgetflag("xt");
 916                 /* do we have a meta? */
 917                 Val(T_km) = tgetflag("km");
 918                 Val(T_MT) = tgetflag("MT");
 919                 /* Get the size */
 920                 Val(T_co) = tgetnum("co");
 921                 Val(T_li) = tgetnum("li");
 922                 for (t = tstr; t->name != NULL; t++) {
 923                         /* XXX: some systems' tgetstr needs non const */
 924                         terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name),
 925                             &area));
 926                 }
 927         }
 928 
 929         if (Val(T_co) < 2)
 930                 Val(T_co) = 80; /* just in case */
 931         if (Val(T_li) < 1)
 932                 Val(T_li) = 24;
 933 
 934         el->el_terminal.t_size.v = Val(T_co);
 935         el->el_terminal.t_size.h = Val(T_li);
 936 
 937         terminal_setflags(el);
 938 
 939                                 /* get the correct window size */
 940         (void) terminal_get_size(el, &lins, &cols);
 941         if (terminal_change_size(el, lins, cols) == -1)
 942                 return -1;
 943         (void) sigprocmask(SIG_SETMASK, &oset, NULL);
 944         terminal_bind_arrow(el);
 945         el->el_terminal.t_name = term;
 946         return i <= 0 ? -1 : 0;
 947 }
...

variable "area"  is assigned with an unassigned variable called "buf" which "buf" is declared in line 869. This is a local variable and is not referenced or assigned to a global variable or any local variable in the function. Variable area is only assigned once which found at line 879. Thus, this returns an error of "array out of bounds" (cap=0xffffffffffffd750 <Address 0xffffffffffffd750 out of bounds>) because variable "cap" is a pointer to the character type array where cap has undefined value, and is the third parameter to function "private void terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap) ".

With regards to my packages, additional info are seen below:
 - glibc-2.12-1.107.el6.x86_64
 - libgcc-4.4.7-3.el6.x86_64
 - libstdc++-4.4.7-3.el6.x86_64 
 - ncurses-libs-5.7-3.20090208.el6.x86_64

The process on how did I install it or build it is by,

#  tar xzvf Percona-Server-5.6.12-rc60.4.tar.gz 
# cmake .
# make
# make install