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kernel/linux-imx6_3.14.28/scripts/coccinelle/tests/doublebitand.cocci 1.1 KB
6b13f685e   김민수   BSP 최초 추가
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  /// Find bit operations that include the same argument more than once
  //# One source of false positives is when the argument performs a side
  //# effect.  Another source of false positives is when a neutral value
  //# such as 0 for | is used to indicate no information, to maintain the
  //# same structure as other similar expressions
  ///
  // Confidence: Moderate
  // Copyright: (C) 2010 Nicolas Palix, DIKU.  GPLv2.
  // Copyright: (C) 2010 Julia Lawall, DIKU.  GPLv2.
  // Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.  GPLv2.
  // URL: http://coccinelle.lip6.fr/
  // Comments:
  // Options: --no-includes --include-headers
  
  virtual context
  virtual org
  virtual report
  
  @r expression@
  expression E;
  position p;
  @@
  
  (
  *        E@p
           & ... & E
  |
  *        E@p
           | ... | E
  |
  *        E@p
           & ... & !E
  |
  *        E@p
           | ... | !E
  |
  *        !E@p
           & ... & E
  |
  *        !E@p
           | ... | E
  )
  
  @script:python depends on org@
  p << r.p;
  @@
  
  cocci.print_main("duplicated argument to & or |",p)
  
  @script:python depends on report@
  p << r.p;
  @@
  
  coccilib.report.print_report(p[0],"duplicated argument to & or |")