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Program received signal SIGSEGV, Segmentation fault.
0x00000000005d8ace in learn_from_success (ch=0xc426a0, sn=-1) at skills.c:1835
1835	   adept = GET_ADEPT( ch, sn );
(gdb) list
1830	   
1831	  
1832	
1833	   if( IS_NPC( ch ) || ch->pcdata->learned[sn] <= 0 )
1834	      return;
1835	   adept = GET_ADEPT( ch, sn );
1836	   sklvl = skill_table[sn]->skill_level[ch->Class];
1837	   if( sklvl == 0 )
1838	      sklvl = ch->level;
1839	   if( ch->pcdata->learned[sn] < adept )
(gdb) print adept
$19 = 178727773
(gdb) print ch
$20 = (CHAR_DATA *) 0xc426a0
(gdb) print sn
$21 = -1
(gdb) print sklvl
$22 = 32
(gdb) print ch->level
$23 = 65
(gdb) print ch->pcdata->learned[sn]
$24 = 75
(gdb) 

void learn_from_success( CHAR_DATA * ch, int sn )
{
   int adept, gain, sklvl, learn, percent, schance;
   
  

   if( IS_NPC( ch ) || ch->pcdata->learned[sn] <= 0 )
      return;
   adept = GET_ADEPT( ch, sn );
   sklvl = skill_table[sn]->skill_level[ch->Class];
   if( sklvl == 0 )
      sklvl = ch->level;
   if( ch->pcdata->learned[sn] < adept )
   {
      schance = ch->pcdata->learned[sn] + ( 5 * skill_table[sn]->difficulty );
      percent = number_percent(  );
      if( percent >= schance )
         learn = 2;
      else if( schance - percent > 25 )
         return;
      else
         learn = 1;
      ch->pcdata->learned[sn] = UMIN( adept, ch->pcdata->learned[sn] + learn );
      if( ch->pcdata->learned[sn] == adept ) /* fully learned! */
      {
         gain = 1000 * sklvl;
         
         set_char_color( AT_WHITE, ch );
         ch_printf( ch, "You are now an adept of %s!  You gain %d bonus experience!\r\n", skill_table[sn]->name, gain );
      }
      else
      {
         gain = 100 * sklvl;
         
         if( !ch->fighting && sn != gsn_hide && sn != gsn_sneak )
         {
            set_char_color( AT_WHITE, ch );
            ch_printf( ch, "You gain %d experience points from your success!\r\n", gain );
         }
      }
      gain_exp( ch, gain );
   }
}