10.3 and essential type of & expression

[lovewar]

Would the following examples be compliant with rule #10.3?

Code:

void foo(void) {
  uint8_t u8a = getCode();
  
  sint32_t s32a = u8a & 0xFF;    // here
}

Would the following examples be non-compliant with rule #10.3?

Code:

void foo(void) {
  uint8_t u8a = getCode();
  
  uint8_t u8b = u8a & 0xFF;    // here
}