mysys/ma_dyncol.c:2292: error: DEAD_STORE
  The value written to &rc (type int) is never used.
  2290.   {
  2291.     DYN_HEADER header;
  2292. >   enum enum_dyncol_func_result rc= ER_DYNCOL_FORMAT;
  2293.     bzero(&header, sizeof(header));
  2294.   

mysys/mf_iocache.c:1454: error: DEAD_STORE
  The value written to &left_length (type unsigned long) is never used.
  1452.         goto read_append_buffer;
  1453.       }
  1454. >     left_length+=length;
  1455.       diff_length=0;
  1456.     }

mysys/my_copy.c:65: error: DEAD_STORE
  The value written to &from_file (type int) is never used.
  63.     DBUG_PRINT("my",("from %s to %s MyFlags %lu", from, to, MyFlags));
  64.   
  65. >   from_file=to_file= -1;
  66.     DBUG_ASSERT(!(MyFlags & (MY_FNABP | MY_NABP))); /* for my_read/my_write */
  67.     if (MyFlags & MY_HOLD_ORIGINAL_MODES)		/* Copy stat if possible */

mysys/my_getopt.c:200: error: DEAD_STORE
  The value written to &is_cmdline_arg (type char) is never used.
  198.     void *value;
  199.     int error, i;
  200. >   my_bool is_cmdline_arg= 1;
  201.     DBUG_ENTER("handle_options");
  202.   

mysys/my_seek.c:49: error: DEAD_STORE
  The value written to &newpos (type long) is never used.
  47.   my_off_t my_seek(File fd, my_off_t pos, int whence, myf MyFlags)
  48.   {
  49. >   os_off_t newpos= -1;
  50.     DBUG_ENTER("my_seek");
  51.     DBUG_PRINT("my",("fd: %d Pos: %llu  Whence: %d  MyFlags: %lu",

mysys/string.c:163: error: DEAD_STORE
  The value written to &next_pos (type char const *) is never used.
  161.     {
  162.       const char  *cur_pos= append;
  163. >     const char *next_pos= cur_pos;
  164.   
  165.       /* Search for quote in each string and replace with escaped quote */

mysys/tree.c:151: error: DEAD_STORE
  The value written to &abort (type char) is never used.
  149.         {
  150.           first_error= first_error ? first_error : error;
  151. >         abort= 1;
  152.         }
  153.       }

Total: 7