C, skip initialisation static array

Question

Is there a way to instruct gcc to skip initialization for certain static,volatile variables? I have several circular buffers (declared volatile) that really don't need to be zeroed at startup and on my MCU, it's a waste of about ~2500 tcy.

Thanks in advance,

Answer 1

If you use gcc, you can place the array object in the .noinit section:

uint8_t arr[1024] __attribute__ ((section (".noinit")));