Adafruit_LittleFS.cpp:159:45: error: variable-sized object 'parent' may not be initialized

[kylongmu]

Describe the bug variable-sized object 'parent' may not be initialized

Set up (please complete the following information)

• Adafruit_nRF52_Arduino version 0.20.1 - 2020.04.23
• OS (windows10)
• Arduino IDE 1.8.12

To Reproduce Steps to reproduce the behavior:

1. Set Board as 'Adafruit Feather nRF52832'
2. Open 'beacon' example
3. Click on 'veryfy‘
4. See error

C:\Users\THINKPAD\Documents\Arduino\hardware\Adafruit\Adafruit_nRF52_Arduino\libraries\Adafruit_LittleFS\src\Adafruit_LittleFS.cpp: In member function 'bool Adafruit_LittleFS::mkdir(const char*)':

C:\Users\THINKPAD\Documents\Arduino\hardware\Adafruit\Adafruit_nRF52_Arduino\libraries\Adafruit_LittleFS\src\Adafruit_LittleFS.cpp:159:45: error: variable-sized object 'parent' may not be initialized

 char parent[slash - filepath + 1] = { 0 };

[pyro9]

Could not verify using Arduino IDE 1.8.13 and Adafruit_nRF52_Arduino 0.20.5, it might be worth updating and trying it again.

[hathach]

closed since there is no response from OP

[quentinmit]

I just experienced the same issue after updating to the latest master. Here's the more complete compilation output:

/Users/quentin/Library/Arduino15/packages/arduino/tools/arm-none-eabi-gcc/4.8.3-2014q1/bin/arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -c -g -w -mfloat-abi=hard -mfpu=fpv4-sp-d16 -u _printf_float -std=gnu++11 -ffunction-sections -fdata-sections -fno-threadsafe-statics -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -MMD -DF_CPU=64000000 -DARDUINO=10815 -DARDUINO_NRF52840_FEATHER_SENSE -DARDUINO_ARCH_ADAFRUIT_NRF52_ARDUINO "-DARDUINO_BSP_VERSION=\"1.1.0\"" -DNRF52840_XXAA -DUSBCON -DUSE_TINYUSB -DUSB_VID=0x239A -DUSB_PID=0x8087 "-DUSB_MANUFACTURER=\"Adafruit\"" "-DUSB_PRODUCT=\"Feather nRF52840 Sense\"" -DSOFTDEVICE_PRESENT -DARDUINO_NRF52_ADAFRUIT -DNRF52_SERIES -DDX_CC_TEE -DLFS_NAME_MAX=64 -Ofast -DCFG_DEBUG=0 -DCFG_LOGGER=1 -DCFG_SYSVIEW=0 -I/Users/quentin/Library/Arduino15/packages/adafruit/tools/CMSIS/5.7.0/CMSIS/Core/Include/ -I/Users/quentin/Library/Arduino15/packages/adafruit/tools/CMSIS/5.7.0/CMSIS/DSP/Include/ -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/nordic -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/nordic/nrfx -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/nordic/nrfx/hal -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/nordic/nrfx/mdk -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/nordic/nrfx/soc -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/nordic/nrfx/drivers/include -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/nordic/nrfx/drivers/src -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/nordic/softdevice/s140_nrf52_6.1.1_API/include -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/nordic/softdevice/s140_nrf52_6.1.1_API/include/nrf52 -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/freertos/Source/include -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/freertos/config -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/freertos/portable/GCC/nrf52 -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/freertos/portable/CMSIS/nrf52 -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/sysview/SEGGER -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5/sysview/Config -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/libraries/Adafruit_TinyUSB_Arduino/src/arduino -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/cores/nRF5 -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/variants/feather_nrf52840_sense -I/Users/quentin/Documents/Arduino/libraries/Adafruit_NeoPixel -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/libraries/Bluefruit52Lib/src -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/libraries/Adafruit_nRFCrypto/src -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/libraries/Adafruit_TinyUSB_Arduino/src -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/libraries/BLEAdafruitService/src -I/Users/quentin/Documents/Arduino/libraries/Adafruit_Unified_Sensor -I/Users/quentin/Documents/Arduino/libraries/Adafruit_GFX_Library -I/Users/quentin/Documents/Arduino/libraries/Adafruit_SSD1306 -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/libraries/SPI -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/libraries/Wire -I/Users/quentin/Documents/Arduino/libraries/Adafruit_INA219 -I/Users/quentin/Documents/Arduino/libraries/Adafruit_BusIO -I/Users/quentin/Documents/Arduino/libraries/Adafruit_APDS9960_Library -I/Users/quentin/Documents/Arduino/libraries/Adafruit_BMP280_Library -I/Users/quentin/Documents/Arduino/libraries/Adafruit_LIS3MDL -I/Users/quentin/Documents/Arduino/libraries/Adafruit_LSM6DS -I/Users/quentin/Documents/Arduino/libraries/Adafruit_SHT31_Library -I/Users/quentin/Documents/Arduino/libraries/Adafruit_SPIFlash/src -I/Users/quentin/Documents/Arduino/libraries/SdFat_-_Adafruit_Fork/src -I/Users/quentin/Documents/Arduino/libraries/Adafruit_AHRS/src -I/Users/quentin/Documents/Arduino/libraries/Adafruit_Sensor_Calibration -I/Users/quentin/Documents/Arduino/libraries/ArduinoJson/src -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/libraries/Adafruit_LittleFS/src -I/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/libraries/InternalFileSytem/src /Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/libraries/Adafruit_LittleFS/src/Adafruit_LittleFS.cpp -o /var/folders/kn/0gfzt13x37j63313z_5szy3h0000gn/T/arduino_build_531816/libraries/Adafruit_LittleFS/Adafruit_LittleFS.cpp.o
/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/libraries/Adafruit_LittleFS/src/Adafruit_LittleFS.cpp: In member function 'bool Adafruit_LittleFS::mkdir(const char*)':
/Users/quentin/Documents/Arduino/hardware/adafruit/Adafruit_nRF52_Arduino/libraries/Adafruit_LittleFS/src/Adafruit_LittleFS.cpp:161:45: error: variable-sized object 'parent' may not be initialized
     char parent[slash - filepath + 1] = { 0 };
                                             ^

This is with Arduino 1.8.15. Currently about to update to 1.8.16 to see if that fixes it.

[hathach]

Your gcc is too old, try to reinstall bsp, if you are clone with git. Make sure you do follow the guide in the readme

[quentinmit]

@hathach Actually it seems that the Arduino IDE keeps bouncing between the 2014 GCC in the arduino package and the 2019 GCC in the adafruit package. It seems to flip back and forth randomly every time I try to compile the sketch. I do have the new GCC installed as well.