:core cancer: n. A process that exhibits a slow but inexorable
resource {leak} -- like a cancer, it kills by crowding out
productive `tissue'.
-- The AI Hackers Dictionary
fandango on core: [UNIX/C hackers, from the Mexican dance] n.
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'....