Precedence Lossage /pre's*-dens Los'*j/ N.
[C
Programmers] Coding Error In An Expression Due To Unexpected
Grouping Of Arithmetic Or Logical Operators By The Compiler.
[C
programmers] Coding error in an expression due to unexpected
grouping of arithmetic or logical operators by the compiler. Used
esp. of certain common coding errors in C due to the
nonintuitively low precedence levels of &, |,
^, <<, and >> (for this reason, experienced C
programmers deliberately forget the language's baroque
precedence hierarchy and parenthesize defensively). Can always be
avoided by suitable use of parentheses. LISP fans enjoy
pointing out that this can't happen in their favorite
language, which eschews precedence entirely, requiring one to use
explicit parentheses everywhere. See aliasing bug, memory l
aliasing bug: n. A class of subtle programming errors that can
arise in code that does dynamic allocation, esp. via
`malloc(3)' or equivalent. If several pointers address
(`aliases for') a given hunk of storage, it may happen that the
storage is freed or reallocated (and thus moved) through one alias
and then referenced through another, which may lead to subtle (and
possibly intermittent) lossage depending on the state and the
allocation history of the malloc {arena}....
aliasing bug n.
A class of subtle programming errors that
can arise in code that does dynamic allocation, esp. via
malloc(3) or equivalent. If several pointers address
(`aliases for') a given hunk of storage, it may happen that the
storage is freed or reallocated (and thus moved) through one alias
and then referenced through another, which may lead to subtle (and
possibly intermittent) lossage depending on the state and the
allocation history of the malloc arena....
fandango on core n.
[Unix/C hackers, from the Iberian
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'....
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'....