macro use in array initialization -

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i'm pretty confused bit of code in microchip demo application pic24f microcontroller. looks macro being assigned @ runtime address of array. didn't think possible, limited knowledge of c failing me right now. able provide insight?

#define mbr_addr_tag #define mbr_attributes __attribute__((space(psv), address(drv_fileio_internal_flash_config_files_address)))  ...  const uint8_t mbr_attributes masterbootrecord[fileio_config_media_sector_size] mbr_addr_tag = {....}


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