Re: [Qemu-devel] [PATCH v14 1/5] lib/xbitmap: Introduce xbitmap

[kbuild test robot]

Hi Matthew,

[auto build test WARNING on linus/master]
[also build test WARNING on v4.13-rc5 next-20170817]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Wei-Wang/lib-xbitmap-Introduce-xbitmap/20170820-035516
config: i386-tinyconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   lib/xbitmap.c: In function 'xb_test_bit':
>> lib/xbitmap.c:153:26: warning: passing argument 1 of 'xb_bit_ops' discards 
>> 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     return (bool)xb_bit_ops(xb, bit, XB_TEST);
                             ^~
   lib/xbitmap.c:23:12: note: expected 'struct xb *' but argument is of type 
'const struct xb *'
    static int xb_bit_ops(struct xb *xb, unsigned long bit, enum xb_ops ops)
               ^~~~~~~~~~

vim +153 lib/xbitmap.c

   142  
   143  /**
   144   * xb_test_bit - test a bit in the xbitmap
   145   * @xb: the xbitmap tree used to record the bit
   146   * @bit: index of the bit to set
   147   *
   148   * This function is used to test a bit in the xbitmap.
   149   * Returns: 1 if the bit is set, or 0 otherwise.
   150   */
   151  bool xb_test_bit(const struct xb *xb, unsigned long bit)
   152  {
 > 153          return (bool)xb_bit_ops(xb, bit, XB_TEST);
   154  }
   155  EXPORT_SYMBOL(xb_test_bit);
   156  

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0-DAY kernel test infrastructure                Open Source Technology Center
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