variable symbol 'int a' {a@version} changed
  CRC changed from 0xb5b0e8c9 to 0xb7c5b6f1

variable symbol 'int b' changed
  CRC changed from 0xb70c2d59 to 0x9be92606

variable symbol 'int c' changed
  CRC changed from 0x1e91976d to 0x7eb59df3

... 1 omitted; 4 symbols have only CRC changes