dict.org

The DICT Development Group


Search for:
Search type:
Database:

Database copyright information
Server information
Wiki: Resources, links, and other information


2 definitions found
 for overrun screw
From The Jargon File (version 4.4.7, 29 Dec 2003) :

  overrun screw
   n.
  
      [C programming] A variety of fandango on core produced by scribbling past
      the end of an array (C implementations typically have no checks for this
      error). This is relatively benign and easy to spot if the array is static;
      if it is auto, the result may be to smash the stack ? often resulting in
      heisenbugs of the most diabolical subtlety. The term overrun screw is
      used esp. of scribbles beyond the end of arrays allocated with malloc(3);
      this typically trashes the allocation header for the next block in the {
      arena, producing massive lossage within malloc and often a core dump on
      the next operation to use stdio(3) or malloc(3) itself. See spam, {
      overrun; see also memory leak, memory smash, aliasing bug, {
      precedence lossage, fandango on core, secondary damage.
  

From The Free On-line Dictionary of Computing (18 March 2015) :

  overrun screw
  
     A variety of fandango on core produced by a C program
     array+({C">scribbling past the end of an array ({C implementations
     typically have no checks for this error).  This is relatively
     benign and easy to spot if the array is static; if it is
     auto, the result may be to smash the stack - often
     resulting in heisenbugs of the most diabolical subtlety.
     The term "overrun screw" is used especially of scribbles
     beyond the end of arrays allocated with malloc; this
     typically overwrites the allocation header for the next block
     in the arena, producing massive lossage within malloc and
     often a core dump on the next operation to use stdio or
     malloc itself.
  
     See spam, overrun; see also memory leak, memory smash,
     aliasing bug, precedence lossage, fandango on core,
     secondary damage.
  
     (1995-01-19)
  

Questions or comments about this site? Contact webmaster@dict.org