c - Shifting array elements returns unexpected value -

i programming stm32 arm based board , following problem:

i moving elements inside array unexpected values not part of array. here code:

int temp=*manual_items[selec].byte_control[2]; *manual_items[selec].byte_control[2]=*manual_items[selec].byte_control[1]; *manual_items[selec].byte_control[1]=*manual_items[selec].byte_control[0]; *manual_items[selec].byte_control[0]=temp; 

the values inside array (0,0,1) example, expect (0,1,0) but, instead (224,1,0). makes me suspect kind of garbage being stored in temp, have tried initializing 0 when declared, getting same result.

also, using same approach in different part of code works:

int temp=*manual_items[selec].byte_control[3]; *manual_items[selec].byte_control[3]=*manual_items[selec].byte_control[2]; *manual_items[selec].byte_control[2]=*manual_items[selec].byte_control[1]; *manual_items[selec].byte_control[1]=*manual_items[selec].byte_control[0]; *manual_items[selec].byte_control[0]=temp; 

this shifts values perfectly, can't understand why first not working , second yes. problem?

if helps, i'm using keil uvision 5 ide.

ps: know there better ways shift values in arrays, test doing.

edit: manual_items[] array of manual_t, struct created. struct:

typedef struct _manual_ {   char name[20];   uint8_t *byte_control[4];   status_t *status;   status_type type;   int color_ref;   char display_ref[10]; } manual_t; 

so byte_control[] of type uint8_t.

edit 2: declartion of manual_items:

manual_t manual_items[]= {   {"barrier",{&barrierman},&status_items[3],updown,0,0},   {"sem. 1",{&sem1greenman,&sem1yellowman,&sem1redman},&status_items[8],semaphore,0,0},   {"sem. 2",{&sem2greenman,&sem2yellowman,&sem2redman},&status_items[9],semaphore,0,0} }; 

edit 3: works!! in end problem not related piece of code, why not find causing error. had forgotten put break;after 2 switch cases, made program go crazy. , remember mistakes expect least!