Issues

Issues

• extmod/network_lwip: ifconfig() leaves ip_addr_t.type uninitialised for the DNS server (answers silently dropped)

  micropython/micropython#19942 · opened on Nov 12, 2026

• rp2: wlan.active(True) with LVGL causing RP2350A to hang -> gpio_irq() reads beyond machine_pin_irq_obj on RP2350A (48 INTR slots vs 30 entries) -> HardFault

  micropython/micropython#19933 · opened on Nov 11, 2026
  2

• ports/esp32: I2CTarget crashes on C5/C6

  micropython/micropython#19926 · opened on Nov 10, 2026 · release-1.30
  1

• Build error: 'NoneType' object has no attribute 'replace' on 2nd build when specific file is touched

  micropython/micropython#19921 · opened on Nov 10, 2026
  1

• py/gc: weakref.ref callback can run on freed memory when the ref and its referent die in the same collection

  micropython/micropython#19917 · opened on Nov 9, 2026

• rp2 (Pico W): mDNS only works after wlan.active(False) before setting hostname

  micropython/micropython#19910 · opened on Nov 7, 2026

• stm32/n6: STM32N6570-DK runs the CPU at 800 MHz on the nominal core voltage; VOS0 works once the board's overdrive pin and the external-supply setting are done first

  micropython/micropython#19907 · opened on Nov 7, 2026

• RTC clock-source and low-power-clock writes happen before backup-domain access is enabled, so the RTC stays on the LSI and can stop while idle

  micropython/micropython#19906 · opened on Nov 7, 2026

• stm32/eth: RX tail pointer set past the freed descriptor, the RX DMA stops early and frames are dropped (H5/H7/N6)

  micropython/micropython#19905 · opened on Nov 7, 2026
  2

• ci_qemu_build_arm_bigendian isn't actually bigendian

  micropython/micropython#19902 · opened on Nov 6, 2026
  2

• repr() of a float is not the shortest string that round-trips

  micropython/micropython#19876 · opened on Nov 4, 2026
  2

• float() rejects instances of an int subclass

  micropython/micropython#19874 · opened on Nov 4, 2026

• len() raises TypeError when __len__ returns a bool

  micropython/micropython#19873 · opened on Nov 4, 2026

• iter() returns the result of __iter__ without checking that it is an iterator

  micropython/micropython#19872 · opened on Nov 4, 2026

• getattr() and friends reject a str subclass as the attribute name

  micropython/micropython#19871 · opened on Nov 4, 2026

• __bool__ returning a non-bool is read as False instead of raising TypeError

  micropython/micropython#19870 · opened on Nov 4, 2026

• ord() rejects str and bytes subclass instances

  micropython/micropython#19868 · opened on Nov 4, 2026
  1

• round() of a bool with ndigits returns a float

  micropython/micropython#19867 · opened on Nov 4, 2026
  2

• round(x, None) raises TypeError

  micropython/micropython#19866 · opened on Nov 4, 2026
  1

• bin(), hex() and oct() do not reject non-integer arguments

  micropython/micropython#19865 · opened on Nov 4, 2026
  1

• struct: pack/unpack of "nan" results in "inf"

  micropython/micropython#19836 · opened on Nov 1, 2026

• ports/unix: ffi function call with wrong arity crashes (SIGSEGV instead of TypeError)

  micropython/micropython#19832 · opened on Oct 31, 2026

• rp2/RP2040: frozen @micropython.native functions HardFault (mpy-tool.py aligns native code to 2 bytes, prelude index is read as a word)

  micropython/micropython#19830 · opened on Oct 30, 2026

• RFC: Speed up same-size slice assignment

  micropython/micropython#19806 · opened on Oct 23, 2026
  3

• docs: undocumented callback object returned by Pin.irq

  micropython/micropython#19798 · opened on Oct 22, 2026
  1