circuitpython 9.2.3 fails on tiny usb error...

[maccampb]

I don't know if this is the correct place to post this, so apologies up front....
I am attempting to build the latest version of circuit python for the feather_m0_rfm9x board and I get an error message that seems to point to tinyusb...

I am using a current version of the arm-none-eabi compiler that is producing a cryptic error message... I have pulled the latest version for tinyusb into the build.

Any guidance would be appreciated on where to go next...

---

X2 12:52:mike@MACBookPro22 atmel-samd gmake BOARD=feather_m0_rfm9x

• Verbosity options: any combination of "steps commands rules", as make V=... or env var BUILD_VERBOSE
  MKMANIFEST ../../frozen/Adafruit_CircuitPython_RFM9x
  In function 'proc_write10_new_data',
  inlined from 'mscd_xfer_cb' at ../../lib/tinyusb/src/class/msc/msc_device.c:460:9:
  ../../lib/tinyusb/src/class/msc/msc_device.c:840:9: error: 'memmove' reading 1 or more bytes from a region of size 0 [-Werror=stringop-overread]
  840 | memmove(_mscd_epbuf.buf, _mscd_epbuf.buf + nbytes, left_over);
  | ^
  ../../lib/tinyusb/src/class/msc/msc_device.c: In function 'mscd_xfer_cb':
  ../../lib/tinyusb/src/class/msc/msc_device.c:79:3: note: at offset 512 into source object '_mscd_epbuf' of size 512
  79 | } _mscd_epbuf;
  | ^
  lto1: all warnings being treated as errors
  make[1]: *** [/var/folders/8r/n7d2n0d95q18cdr9nlv_7r540000gn/T//ccChUvDK.ltrans0.ltrans.o] Error 1
  lto-wrapper: fatal error: make returned 2 exit status
  compilation terminated.
  /Applications/ArmGNUToolchain/14.2.rel1/arm-none-eabi/bin/../lib/gcc/arm-none-eabi/14.2.1/../../../../arm-none-eabi/bin/ld: error: lto-wrapper failed
  collect2: error: ld returned 1 exit status
  gmake: *** [Makefile:358: build-feather_m0_rfm9x/firmware.elf] Error 1

[dhalbert]

We discussed this here as well: https://forums.adafruit.com/viewtopic.php?p=1042733#p1042733

Were you able to try gcc 13.2.1?

[maccampb]

Not yet. I use homebrew. So not straightforward, at least for me. lol.

[dhalbert]

You can download other versions from https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads. Scroll down the page to find 13.2.1. You can unpack it somewhere and put it on your PATH before the homebrew bin directories.

[maccampb]

that worked... Thank you!

[dhalbert]

The compiler error may indeed indicate a problem with the memmove call, or it may be a false alarm. @hathach This is probably worth a look.

[hathach]

I think memmove is fine, but will look at this warning later (after TET).

[maccampb]

Interesting result... downloaded and installed the 13.2.1 tool chain.

building with 13.2.1....

√ 15:59:mike@MACBookPro22 atmel-samd gmake -j BOARD=feather_m0_rfm9x

• Verbosity options: any combination of "steps commands rules", as make V=... or env var BUILD_VERBOSE
  FREEZE ../../frozen/Adafruit_CircuitPython_RFM9x
  MKMANIFEST ../../frozen/Adafruit_CircuitPython_RFM9x
  GEN build-feather_m0_rfm9x/genhdr/mpversion.h
  Module registrations updated
  Root pointer registrations updated
  GEN build-feather_m0_rfm9x/genhdr/root_pointers.h
  GEN build-feather_m0_rfm9x/genhdr/moduledefs.h
  QSTR updated
  GEN build-feather_m0_rfm9x/genhdr/qstrdefs.generated.h
  MPY adafruit_rfm9x.py
  GEN build-feather_m0_rfm9x/frozen_content.c
  Memory region Used Size Region Size %age Used
  FLASH_BOOTLOADER: 0 GB 8 KB 0.00%
  FLASH_FIRMWARE: 185228 B 188160 B 98.44%
  FLASH_FILESYSTEM: 0 GB 64 KB 0.00%
  FLASH_CONFIG: 0 GB 0 GB
  FLASH_NVM: 0 GB 256 B 0.00%
  RAM: 4940 B 32 KB 15.08%

185228 bytes used, 2932 bytes free in flash firmware space out of 188160 bytes (183.75kB).
4940 bytes used, 27828 bytes free in ram for stack and heap out of 32768 bytes (32.0kB).

Converted to uf2, output size: 370688, start address: 0x2000
Wrote 370688 bytes to build-feather_m0_rfm9x/firmware.uf2

[maccampb]

testing with the feather_m0_rfm9X and this build runs my program correctly.