• Arnd Bergmann's avatar
    led-class-flash: fix -Wrestrict warning · 811b5440
    Arnd Bergmann authored
    gcc-11 warns when building with W=1:
    
    drivers/leds/led-class-flash.c: In function 'flash_fault_show':
    drivers/leds/led-class-flash.c:210:16: error: 'sprintf' argument 3 overlaps destination object 'buf' [-Werror=restrict]
      210 |         return sprintf(buf, "%s\n", buf);
          |                ^~~~~~~~~~~~~~~~~~~~~~~~~
    drivers/leds/led-class-flash.c:187:54: note: destination object referenced by 'restrict'-qualified argument 1 was declared here
      187 |                 struct device_attribute *attr, char *buf)
          |                                                ~~~~~~^~~
    
    There is no need for the sprintf() here when a strcat() does
    the same thing without invoking undefined behavior.
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    Signed-off-by: default avatarPavel Machek <pavel@ucw.cz>
    811b5440
led-class-flash.c 10.7 KB