When debugging a project I stumbled upon a problem and can't seem to understand it really.

When running the following simple example with MICROPY_DEBUG_VALGRIND (1) and valgrind, the garbage collector won't do automatic collection and I run out of memory. If I try to force a collection using gc.collect() I get an invalid read and a termination.

import gc
import array
import micropython   
while True:
    frame = array.array('i', (i for i in range(512)))
    micropython.mem_info()
    gc.collect()

Output when trying to force a collection while running with valgrind:

Output when not trying to force a collection:

Is this expected behavior or is there a way to run my programs with valgrind and an active garbage collector?