ESP-IDF 5.3.1 uninitialized variable compile error

[IanBurwell]

Describe the bug
I am trying to use RadioLib as an ESP-IDF component with ESP-IDF v5.3.1, but am running into the following warning/error. Looking at the file in question, if the setIrqFlags(irq) function is called with irq=0 the return value is not well defined. I think that instead the final return (return(state);) should probably be return(RADIOLIB_ERR_NONE); as if state is not 0, the RADIOLIB_ASSERT(state) from earlier will return it. Alternatively state could be initialized to RADIOLIB_ERR_NONE.

/home/en/Documents/DroRa/components/RadioLib/src/modules/SX127x/SX127x.cpp: In member function 'virtual int16_t SX127x::setIrqFlags(uint32_t)':
/home/en/Documents/DroRa/components/RadioLib/src/modules/SX127x/SX127x.cpp:1420:15: error: 'state' may be used uninitialized [-Werror=maybe-uninitialized]
 1420 |   return(state);

Console output

idf.py build
Executing action: all (aliases: build)
Running cmake in directory /home/en/Documents/DroRa/build
Executing "cmake -G Ninja -DPYTHON_DEPS_CHECKED=1 -DPYTHON=/home/en/.espressif/python_env/idf5.3_py3.10_env/bin/
python -DESP_PLATFORM=1 -DSDKCONFIG_DEFAULTS=sdkconfig.common;sdkconfig.ht_tracker -DCCACHE_ENABLE=0 /home/en/Documents/DroRa"...                                                                                               -- Found Git: /usr/bin/git (found version "2.34.1") 
-- The C compiler identification is GNU 13.2.0
-- The CXX compiler identification is GNU 13.2.0
-- The ASM compiler identification is GNU
-- Found assembler: /home/en/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20240530/xtensa-esp-elf/bin/xtensa-esp32
-elf-gcc                                                                                                        -- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /home/en/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20240530/xtensa-esp-elf/bin
/xtensa-esp32-elf-gcc - skipped                                                                                 -- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /home/en/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20240530/xtensa-esp-elf/b
in/xtensa-esp32-elf-g++ - skipped                                                                               -- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Building ESP-IDF components for target esp32
NOTICE: Updating lock file at /home/en/Documents/DroRa/dependencies.lock
Processing 1 dependencies:
[1/1] idf (5.3.1)
-- Project sdkconfig file /home/en/Documents/DroRa/sdkconfig
Loading defaults file /home/en/Documents/DroRa/sdkconfig.common...
Loading defaults file /home/en/Documents/DroRa/sdkconfig.ht_tracker...
-- Compiler supported targets: xtensa-esp-elf
-- Found Python3: /home/en/.espressif/python_env/idf5.3_py3.10_env/bin/python (found version "3.10.12") found co
mponents: Interpreter                                                                                           -- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE  
-- Performing Test C_COMPILER_SUPPORTS_WFORMAT_SIGNEDNESS
-- Performing Test C_COMPILER_SUPPORTS_WFORMAT_SIGNEDNESS - Success
-- App "DroRa" version: 5cd13ff-dirty
-- Adding linker script /home/en/Documents/DroRa/build/esp-idf/esp_system/ld/memory.ld
-- Adding linker script /home/en/Documents/DroRa/build/esp-idf/esp_system/ld/sections.ld.in
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/esp_rom/esp32/ld/esp32.rom.ld
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/esp_rom/esp32/ld/esp32.rom.api.ld
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/esp_rom/esp32/ld/esp32.rom.libgcc.ld
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/esp_rom/esp32/ld/esp32.rom.newlib-data.ld
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/esp_rom/esp32/ld/esp32.rom.syscalls.ld
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/esp_rom/esp32/ld/esp32.rom.newlib-funcs.ld
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/soc/esp32/ld/esp32.peripherals.ld
-- Components: DR_Console DR_Parameters RadioLib app_trace app_update bootloader bootloader_support bt cmock con
sole cxx driver efuse esp-tls esp_adc esp_app_format esp_bootloader_format esp_coex esp_common esp_driver_ana_cmpr esp_driver_cam esp_driver_dac esp_driver_gpio esp_driver_gptimer esp_driver_i2c esp_driver_i2s esp_driver_isp esp_driver_jpeg esp_driver_ledc esp_driver_mcpwm esp_driver_parlio esp_driver_pcnt esp_driver_ppa esp_driver_rmt esp_driver_sdio esp_driver_sdm esp_driver_sdmmc esp_driver_sdspi esp_driver_spi esp_driver_touch_sens esp_driver_tsens esp_driver_uart esp_driver_usb_serial_jtag esp_eth esp_event esp_gdbstub esp_hid esp_http_client esp_http_server esp_https_ota esp_https_server esp_hw_support esp_lcd esp_local_ctrl esp_mm esp_netif esp_netif_stack esp_partition esp_phy esp_pm esp_psram esp_ringbuf esp_rom esp_system esp_timer esp_vfs_console esp_wifi espcoredump esptool_py fatfs freertos hal heap http_parser idf_test ieee802154 json log lwip main mbedtls mqtt newlib nvs_flash nvs_sec_provider openthread partition_table perfmon protobuf-c protocomm pthread sdmmc soc spi_flash spiffs tcp_transport ulp unity usb vfs wear_levelling wifi_provisioning wpa_supplicant xtensa                     -- Component paths: /home/en/Documents/DroRa/components/DR_Console /home/en/Documents/DroRa/components/DR_Parame
ters /home/en/Documents/DroRa/components/RadioLib /home/en/esp/v5.3.1/esp-idf/components/app_trace /home/en/esp/v5.3.1/esp-idf/components/app_update /home/en/esp/v5.3.1/esp-idf/components/bootloader /home/en/esp/v5.3.1/esp-idf/components/bootloader_support /home/en/esp/v5.3.1/esp-idf/components/bt /home/en/esp/v5.3.1/esp-idf/components/cmock /home/en/esp/v5.3.1/esp-idf/components/console /home/en/esp/v5.3.1/esp-idf/components/cxx /home/en/esp/v5.3.1/esp-idf/components/driver /home/en/esp/v5.3.1/esp-idf/components/efuse /home/en/esp/v5.3.1/esp-idf/components/esp-tls /home/en/esp/v5.3.1/esp-idf/components/esp_adc /home/en/esp/v5.3.1/esp-idf/components/esp_app_format /home/en/esp/v5.3.1/esp-idf/components/esp_bootloader_format /home/en/esp/v5.3.1/esp-idf/components/esp_coex /home/en/esp/v5.3.1/esp-idf/components/esp_common /home/en/esp/v5.3.1/esp-idf/components/esp_driver_ana_cmpr /home/en/esp/v5.3.1/esp-idf/components/esp_driver_cam /home/en/esp/v5.3.1/esp-idf/components/esp_driver_dac /home/en/esp/v5.3.1/esp-idf/components/esp_driver_gpio /home/en/esp/v5.3.1/esp-idf/components/esp_driver_gptimer /home/en/esp/v5.3.1/esp-idf/components/esp_driver_i2c /home/en/esp/v5.3.1/esp-idf/components/esp_driver_i2s /home/en/esp/v5.3.1/esp-idf/components/esp_driver_isp /home/en/esp/v5.3.1/esp-idf/components/esp_driver_jpeg /home/en/esp/v5.3.1/esp-idf/components/esp_driver_ledc /home/en/esp/v5.3.1/esp-idf/components/esp_driver_mcpwm /home/en/esp/v5.3.1/esp-idf/components/esp_driver_parlio /home/en/esp/v5.3.1/esp-idf/components/esp_driver_pcnt /home/en/esp/v5.3.1/esp-idf/components/esp_driver_ppa /home/en/esp/v5.3.1/esp-idf/components/esp_driver_rmt /home/en/esp/v5.3.1/esp-idf/components/esp_driver_sdio /home/en/esp/v5.3.1/esp-idf/components/esp_driver_sdm /home/en/esp/v5.3.1/esp-idf/components/esp_driver_sdmmc /home/en/esp/v5.3.1/esp-idf/components/esp_driver_sdspi /home/en/esp/v5.3.1/esp-idf/components/esp_driver_spi /home/en/esp/v5.3.1/esp-idf/components/esp_driver_touch_sens /home/en/esp/v5.3.1/esp-idf/components/esp_driver_tsens /home/en/esp/v5.3.1/esp-idf/components/esp_driver_uart /home/en/esp/v5.3.1/esp-idf/components/esp_driver_usb_serial_jtag /home/en/esp/v5.3.1/esp-idf/components/esp_eth /home/en/esp/v5.3.1/esp-idf/components/esp_event /home/en/esp/v5.3.1/esp-idf/components/esp_gdbstub /home/en/esp/v5.3.1/esp-idf/components/esp_hid /home/en/esp/v5.3.1/esp-idf/components/esp_http_client /home/en/esp/v5.3.1/esp-idf/components/esp_http_server /home/en/esp/v5.3.1/esp-idf/components/esp_https_ota /home/en/esp/v5.3.1/esp-idf/components/esp_https_server /home/en/esp/v5.3.1/esp-idf/components/esp_hw_support /home/en/esp/v5.3.1/esp-idf/components/esp_lcd /home/en/esp/v5.3.1/esp-idf/components/esp_local_ctrl /home/en/esp/v5.3.1/esp-idf/components/esp_mm /home/en/esp/v5.3.1/esp-idf/components/esp_netif /home/en/esp/v5.3.1/esp-idf/components/esp_netif_stack /home/en/esp/v5.3.1/esp-idf/components/esp_partition /home/en/esp/v5.3.1/esp-idf/components/esp_phy /home/en/esp/v5.3.1/esp-idf/components/esp_pm /home/en/esp/v5.3.1/esp-idf/components/esp_psram /home/en/esp/v5.3.1/esp-idf/components/esp_ringbuf /home/en/esp/v5.3.1/esp-idf/components/esp_rom /home/en/esp/v5.3.1/esp-idf/components/esp_system /home/en/esp/v5.3.1/esp-idf/components/esp_timer /home/en/esp/v5.3.1/esp-idf/components/esp_vfs_console /home/en/esp/v5.3.1/esp-idf/components/esp_wifi /home/en/esp/v5.3.1/esp-idf/components/espcoredump /home/en/esp/v5.3.1/esp-idf/components/esptool_py /home/en/esp/v5.3.1/esp-idf/components/fatfs /home/en/esp/v5.3.1/esp-idf/components/freertos /home/en/esp/v5.3.1/esp-idf/components/hal /home/en/esp/v5.3.1/esp-idf/components/heap /home/en/esp/v5.3.1/esp-idf/components/http_parser /home/en/esp/v5.3.1/esp-idf/components/idf_test /home/en/esp/v5.3.1/esp-idf/components/ieee802154 /home/en/esp/v5.3.1/esp-idf/components/json /home/en/esp/v5.3.1/esp-idf/components/log /home/en/esp/v5.3.1/esp-idf/components/lwip /home/en/Documents/DroRa/main /home/en/esp/v5.3.1/esp-idf/components/mbedtls /home/en/esp/v5.3.1/esp-idf/components/mqtt /home/en/esp/v5.3.1/esp-idf/components/newlib /home/en/esp/v5.3.1/esp-idf/components/nvs_flash /home/en/esp/v5.3.1/esp-idf/components/nvs_sec_provider /home/en/esp/v5.3.1/esp-idf/components/openthread /home/en/esp/v5.3.1/esp-idf/components/partition_table /home/en/esp/v5.3.1/esp-idf/components/perfmon /home/en/esp/v5.3.1/esp-idf/components/protobuf-c /home/en/esp/v5.3.1/esp-idf/components/protocomm /home/en/esp/v5.3.1/esp-idf/components/pthread /home/en/esp/v5.3.1/esp-idf/components/sdmmc /home/en/esp/v5.3.1/esp-idf/components/soc /home/en/esp/v5.3.1/esp-idf/components/spi_flash /home/en/esp/v5.3.1/esp-idf/components/spiffs /home/en/esp/v5.3.1/esp-idf/components/tcp_transport /home/en/esp/v5.3.1/esp-idf/components/ulp /home/en/esp/v5.3.1/esp-idf/components/unity /home/en/esp/v5.3.1/esp-idf/components/usb /home/en/esp/v5.3.1/esp-idf/components/vfs /home/en/esp/v5.3.1/esp-idf/components/wear_levelling /home/en/esp/v5.3.1/esp-idf/components/wifi_provisioning /home/en/esp/v5.3.1/esp-idf/components/wpa_supplicant /home/en/esp/v5.3.1/esp-idf/components/xtensa               -- Configuring done
-- Generating done
-- Build files have been written to: /home/en/Documents/DroRa/build
Running ninja in directory /home/en/Documents/DroRa/build
Executing "ninja all"...
[10/1029] Generating ../../partition_table/partition-table.bin
Partition table binary generated. Contents:
*******************************************************************************
# ESP-IDF Partition Table
# Name, Type, SubType, Offset, Size, Flags
nvs,data,nvs,0x9000,24K,
phy_init,data,phy,0xf000,4K,
factory,app,factory,0x10000,1M,
*******************************************************************************
[414/1029] Performing configure step for 'bootloader'
-- Found Git: /usr/bin/git (found version "2.34.1") 
-- The C compiler identification is GNU 13.2.0
-- The CXX compiler identification is GNU 13.2.0
-- The ASM compiler identification is GNU
-- Found assembler: /home/en/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20240530/xtensa-esp-elf/bin/xtensa-esp32
-elf-gcc                                                                                                        -- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /home/en/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20240530/xtensa-esp-elf/bin
/xtensa-esp32-elf-gcc - skipped                                                                                 -- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /home/en/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20240530/xtensa-esp-elf/b
in/xtensa-esp32-elf-g++ - skipped                                                                               -- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Building ESP-IDF components for target esp32
-- Project sdkconfig file /home/en/Documents/DroRa/sdkconfig
-- Compiler supported targets: xtensa-esp-elf
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/soc/esp32/ld/esp32.peripherals.ld
-- Bootloader project name: "bootloader" version: 1
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/esp_rom/esp32/ld/esp32.rom.ld
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/esp_rom/esp32/ld/esp32.rom.api.ld
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/esp_rom/esp32/ld/esp32.rom.libgcc.ld
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/esp_rom/esp32/ld/esp32.rom.newlib-funcs.ld
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/bootloader/subproject/main/ld/esp32/bootloader.ld
-- Adding linker script /home/en/esp/v5.3.1/esp-idf/components/bootloader/subproject/main/ld/esp32/bootloader.ro
m.ld                                                                                                            -- Components: bootloader bootloader_support efuse esp_app_format esp_bootloader_format esp_common esp_hw_suppor
t esp_rom esp_system esptool_py freertos hal log main micro-ecc newlib partition_table soc spi_flash xtensa     -- Component paths: /home/en/esp/v5.3.1/esp-idf/components/bootloader /home/en/esp/v5.3.1/esp-idf/components/boo
tloader_support /home/en/esp/v5.3.1/esp-idf/components/efuse /home/en/esp/v5.3.1/esp-idf/components/esp_app_format /home/en/esp/v5.3.1/esp-idf/components/esp_bootloader_format /home/en/esp/v5.3.1/esp-idf/components/esp_common /home/en/esp/v5.3.1/esp-idf/components/esp_hw_support /home/en/esp/v5.3.1/esp-idf/components/esp_rom /home/en/esp/v5.3.1/esp-idf/components/esp_system /home/en/esp/v5.3.1/esp-idf/components/esptool_py /home/en/esp/v5.3.1/esp-idf/components/freertos /home/en/esp/v5.3.1/esp-idf/components/hal /home/en/esp/v5.3.1/esp-idf/components/log /home/en/esp/v5.3.1/esp-idf/components/bootloader/subproject/main /home/en/esp/v5.3.1/esp-idf/components/bootloader/subproject/components/micro-ecc /home/en/esp/v5.3.1/esp-idf/components/newlib /home/en/esp/v5.3.1/esp-idf/components/partition_table /home/en/esp/v5.3.1/esp-idf/components/soc /home/en/esp/v5.3.1/esp-idf/components/spi_flash /home/en/esp/v5.3.1/esp-idf/components/xtensa                                                             -- Configuring done
-- Generating done
-- Build files have been written to: /home/en/Documents/DroRa/build/bootloader
[107/108] Generating binary image from built executable
esptool.py v4.8.1
Creating esp32 image...
Merged 2 ELF sections
Successfully created esp32 image.
Generated /home/en/Documents/DroRa/build/bootloader/bootloader.bin
[108/108] cd /home/en/Documents/DroRa/build/bootloader...ome/en/Documents/DroRa/build/bootloader/bootloader.bin
Bootloader binary size 0x6880 bytes. 0x780 bytes (7%) free.
[1005/1029] Building CXX object esp-idf/RadioLib/CMake...s/__idf_RadioLib.dir/src/modules/SX127x/SX127x.cpp.obj
FAILED: esp-idf/RadioLib/CMakeFiles/__idf_RadioLib.dir/src/modules/SX127x/SX127x.cpp.obj 
/home/en/.espressif/tools/xtensa-esp-elf/esp-13.2.0_20240530/xtensa-esp-elf/bin/xtensa-esp32-elf-g++ -DESP_PLATF
ORM -DIDF_VER=\"v5.3.1-dirty\" -DSOC_MMU_PAGE_SIZE=CONFIG_MMU_PAGE_SIZE -DSOC_XTAL_FREQ_MHZ=CONFIG_XTAL_FREQ -D_GLIBCXX_HAVE_POSIX_SEMAPHORE -D_GLIBCXX_USE_POSIX_SEMAPHORE -D_GNU_SOURCE -D_POSIX_READER_WRITER_LOCKS -I/home/en/Documents/DroRa/build/config -I/home/en/Documents/DroRa/components/RadioLib -I/home/en/Documents/DroRa/components/RadioLib/src -I/home/en/esp/v5.3.1/esp-idf/components/newlib/platform_include -I/home/en/esp/v5.3.1/esp-idf/components/freertos/config/include -I/home/en/esp/v5.3.1/esp-idf/components/freertos/config/include/freertos -I/home/en/esp/v5.3.1/esp-idf/components/freertos/config/xtensa/include -I/home/en/esp/v5.3.1/esp-idf/components/freertos/FreeRTOS-Kernel/include -I/home/en/esp/v5.3.1/esp-idf/components/freertos/FreeRTOS-Kernel/portable/xtensa/include -I/home/en/esp/v5.3.1/esp-idf/components/freertos/FreeRTOS-Kernel/portable/xtensa/include/freertos -I/home/en/esp/v5.3.1/esp-idf/components/freertos/esp_additions/include -I/home/en/esp/v5.3.1/esp-idf/components/esp_hw_support/include -I/home/en/esp/v5.3.1/esp-idf/components/esp_hw_support/include/soc -I/home/en/esp/v5.3.1/esp-idf/components/esp_hw_support/include/soc/esp32 -I/home/en/esp/v5.3.1/esp-idf/components/esp_hw_support/dma/include -I/home/en/esp/v5.3.1/esp-idf/components/esp_hw_support/ldo/include -I/home/en/esp/v5.3.1/esp-idf/components/esp_hw_support/port/esp32/. -I/home/en/esp/v5.3.1/esp-idf/components/esp_hw_support/port/esp32/include -I/home/en/esp/v5.3.1/esp-idf/components/heap/include -I/home/en/esp/v5.3.1/esp-idf/components/log/include -I/home/en/esp/v5.3.1/esp-idf/components/soc/include -I/home/en/esp/v5.3.1/esp-idf/components/soc/esp32 -I/home/en/esp/v5.3.1/esp-idf/components/soc/esp32/include -I/home/en/esp/v5.3.1/esp-idf/components/hal/platform_port/include -I/home/en/esp/v5.3.1/esp-idf/components/hal/esp32/include -I/home/en/esp/v5.3.1/esp-idf/components/hal/include -I/home/en/esp/v5.3.1/esp-idf/components/esp_rom/include -I/home/en/esp/v5.3.1/esp-idf/components/esp_rom/include/esp32 -I/home/en/esp/v5.3.1/esp-idf/components/esp_rom/esp32 -I/home/en/esp/v5.3.1/esp-idf/components/esp_common/include -I/home/en/esp/v5.3.1/esp-idf/components/esp_system/include -I/home/en/esp/v5.3.1/esp-idf/components/esp_system/port/soc -I/home/en/esp/v5.3.1/esp-idf/components/esp_system/port/include/private -I/home/en/esp/v5.3.1/esp-idf/components/xtensa/esp32/include -I/home/en/esp/v5.3.1/esp-idf/components/xtensa/include -I/home/en/esp/v5.3.1/esp-idf/components/xtensa/deprecated_include -I/home/en/esp/v5.3.1/esp-idf/components/lwip/include -I/home/en/esp/v5.3.1/esp-idf/components/lwip/include/apps -I/home/en/esp/v5.3.1/esp-idf/components/lwip/include/apps/sntp -I/home/en/esp/v5.3.1/esp-idf/components/lwip/lwip/src/include -I/home/en/esp/v5.3.1/esp-idf/components/lwip/port/include -I/home/en/esp/v5.3.1/esp-idf/components/lwip/port/freertos/include -I/home/en/esp/v5.3.1/esp-idf/components/lwip/port/esp32xx/include -I/home/en/esp/v5.3.1/esp-idf/components/lwip/port/esp32xx/include/arch -I/home/en/esp/v5.3.1/esp-idf/components/lwip/port/esp32xx/include/sys -mlongcalls -Wno-frame-address  -fno-builtin-memcpy -fno-builtin-memset -fno-builtin-bzero -fno-builtin-stpcpy -fno-builtin-strncpy -fdiagnostics-color=always -ffunction-sections -fdata-sections -Wall -Werror=all -Wno-error=unused-function -Wno-error=unused-variable -Wno-error=unused-but-set-variable -Wno-error=deprecated-declarations -Wextra -Wno-unused-parameter -Wno-sign-compare -Wno-enum-conversion -gdwarf-4 -ggdb -Og -fno-shrink-wrap -fmacro-prefix-map=/home/en/Documents/DroRa=. -fmacro-prefix-map=/home/en/esp/v5.3.1/esp-idf=/IDF -fstrict-volatile-bitfields -fno-jump-tables -fno-tree-switch-conversion -std=gnu++2b -fno-exceptions -fno-rtti -MD -MT esp-idf/RadioLib/CMakeFiles/__idf_RadioLib.dir/src/modules/SX127x/SX127x.cpp.obj -MF esp-idf/RadioLib/CMakeFiles/__idf_RadioLib.dir/src/modules/SX127x/SX127x.cpp.obj.d -o esp-idf/RadioLib/CMakeFiles/__idf_RadioLib.dir/src/modules/SX127x/SX127x.cpp.obj -c /home/en/Documents/DroRa/components/RadioLib/src/modules/SX127x/SX127x.cpp                                                                /home/en/Documents/DroRa/components/RadioLib/src/modules/SX127x/SX127x.cpp: In member function 'virtual int16_t 
SX127x::setIrqFlags(uint32_t)':                                                                                 /home/en/Documents/DroRa/components/RadioLib/src/modules/SX127x/SX127x.cpp:1420:15: error: 'state' may be used u
ninitialized [-Werror=maybe-uninitialized]                                                                       1420 |   return(state);
      |               ^
/home/en/Documents/DroRa/components/RadioLib/src/modules/SX127x/SX127x.cpp:1327:11: note: 'state' was declared h
ere                                                                                                              1327 |   int16_t state;
      |           ^~~~~
cc1plus: some warnings being treated as errors
[1014/1029] Building CXX object esp-idf/RadioLib/CMake...idf_RadioLib.dir/src/protocols/LoRaWAN/LoRaWAN.cpp.obj
ninja: build stopped: subcommand failed.
ninja failed with exit code 1, output of the command is in the /home/en/Documents/DroRa/build/log/idf_py_stderr_
output_339958 and /home/en/Documents/DroRa/build/log/idf_py_stdout_output_339958                                

To Reproduce
Include RadioLib in an ESP-IDF project (running 5.3.1) either through adding to the components folder or via idf_components.yml and run a build.

Expected behavior
No errors/warnings on a clean build

Additional info (please complete):

• MCU: esp32c3
• ESP-IDF: 5.3.1
• Library version: 7.1.0

[jgromes]

Good catch - fixed in the commit above, thanks for reporting! Though it is a bit strange that our ESP-IDF CI did not catch this. I guess ESP-IDF 5.5 doesn't have that warning enabled.