C deep copy struct with pointer -

i'm new c , need solve following problem.

i have project reading small bmp (512x512) image. i've managed change colors , have mirrored (both horizontal vertical). though need turn -90°. function can't manage work deepcopybitmap().

i keep getting following error on *copy->raster[i] :

indirection requires pointer operand ('pixel' (aka 'struct _pixel') invalid)

rotation (512x512)

typedef struct _pixel {     unsigned char blue;     unsigned char green;     unsigned char red; } pixel;  typedef struct _bitmap {     char file_path[path_max+1];     char magic_number[3];     unsigned int size;     unsigned char application[5];     unsigned int start_offset;     unsigned int bitmapheadersize;     unsigned int width;     unsigned int height;     unsigned short int depth;     unsigned  char* header;     pixel* raster; } bitmap;  void rotate(bitmap* bmp) {     int i;     int j;     pixel* originalpixel;     bitmap* originalbmp;      deepcopybitmap(bmp, originalbmp);      for(j=1; j <= bmp->height; j++) {         for(i=1; <= bmp->width; i++) {             originalpixel=getpixel(originalbmp->raster, bmp->width, bmp->height, j, i);             setpixel(bmp->raster, bmp->width, bmp->height, (bmp->width + 1 - i), j, originalpixel);         }     }                   }  void deepcopybitmap(bitmap* bmp, bitmap* copy) {     *copy = *bmp;     if (copy->raster) {         copy->raster = malloc(sizeof(*copy->raster));         (int = 0; < copy->height; i++) {             copy->raster[i] = malloc(sizeof(*copy->raster[i]));             memcpy(copy->raster[i], bmp->raster[i], sizeof(*copy->raster[i]));         }     } } 

update

void deepcopybitmap(bitmap* bmp, bitmap* copy) {     copy = malloc(sizeof(bitmap));     *copy = *bmp;     if (copy->raster) {         size_t total_size = copy->height * copy->width * sizeof(pixel);         copy->raster = malloc(total_size);         memcpy(copy->raster, bmp->raster, total_size);     } } 

you allocate 1 pixel here:

        copy->raster = malloc(sizeof(*copy->raster)); 

however, need @ least copy->height pixels iteration work:

        (int = 0; < copy->height; i++) { 

here, allocate 1 pixel again:

            copy->raster[i] = malloc(sizeof(*copy->raster[i])); 

but, intend copy copy->width pixels, not one:

            memcpy(copy->raster[i], bmp->raster[i], sizeof(*copy->raster[i]));         } 

what want allocate copy->height * copy->width pixels, , copy them original.

        size_t total_size = copy->height * copy->width * sizeof(pixel);         copy->raster = malloc(total_size);         memcpy(copy->raster, bmp->raster, total_size);