fandango on core

fandango on core n.  [UNIX/C hackers, from the Mexican
   dance] In C, a wild pointer that runs out of bounds, causing a
   {core dump}, or corrupts the `malloc(3)' {arena} in such
   a way as to cause mysterious failures later on, is sometimes said
   to have `done a fandango on core'.  On low-end personal machines
   without an MMU, this can corrupt the OS itself, causing massive
   lossage.  Other frenetic dances such as the rhumba, cha-cha, or
   watusi, may be substituted.  See {aliasing bug}, {precedence
   lossage}, {smash the stack}, {memory leak}, {memory
   smash}, {overrun screw}, {core}.