Teensy 4.x semi-bricked with "smallest code" on Arduino IDE 2.x

PaulStoffregen / cores

Teensy Core Libraries for Arduino

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Teensy 4.x semi-bricked with "smallest code" on Arduino IDE 2.x #721

Open dronus opened 1 year ago

dronus commented 1 year ago

When building for Teensy 4.x, the Arduino IDE 2.1.1 or 2.2.0 set to "smallest code" optimization produces crashing binaries.

If flashed to the device, the Teensy bricks and does not provide an USB device anymore.

The bootloader button is still working and can be used to reflash the device. When flashed with "fast", "faster" or "fastest" code afterwards, the device is working as usual again.

However, there is some need as there are projects that won't fit Teensy 4.x on "fast" optimized code.

freemin7 commented 3 months ago

This seems really hard to reproduce or address without a (small) code example. I am running Arduino IDE 2.3.2 and never had a binary crash on me. Does your problem persist for newer Arduino IDE versions?