Port, board and/or hardware

unix, RP2

MicroPython version

MicroPython v1.23.0 on 2024-06-02; Raspberry Pi Pico with RP2040
MicroPython v1.23.0 on 2024-05-31; darwin [GCC 4.2.1] version

Reproduction

In an interactive session (or otherwise), run the following code:

import framebuf
buf = bytearray(10*10*2)
f = framebuf.FrameBuffer(buf, 10, 10, framebuf.RGB565)
f.ellipse(5, 5, 0, 0, 0xffff, True)

Expected behaviour

Nothing should be drawn. Code should complete normally.

Maybe an exception should be raised, but I think it's OK to just draw nothing.

Observed behaviour

Micropython hangs; 100% CPU usage observed in unix port. Strong suspicion this is an infinite loop.

Additional Information

I'm very suspicious of the following code:

In this case two_asquare and two_bsquare are both 0, so the stoppingx and stoppingy look like they are never changed, but I haven't 100% proven it to myself.

Code of Conduct

Yes, I agree