build issue with c++

i am working with nrf52840 with nrf5-sdk 17.1.0 and with segger embedded studio 5.42a

i am having trouble build a project and it is giving below warnings:
Building 'main_app' from solution 'main_app' in configuration 'Debug'
Compiling 'du_radio_hal.cpp'
board_config.h
du_radio_hal.cpp
In function ?void __cmsis_start()?:
type ‘const __cmsis_start()::__copy_table_t’ with no linkage used to declare variable ‘const __cmsis_start()::__copy_table_t __copy_table_start__’ with linkage
type ‘const __cmsis_start()::__copy_table_t’ with no linkage used to declare variable ‘const __cmsis_start()::__copy_table_t __copy_table_end__’ with linkage
type ‘const __cmsis_start()::__zero_table_t’ with no linkage used to declare variable ‘const __cmsis_start()::__zero_table_t __zero_table_start__’ with linkage
type ‘const __cmsis_start()::__zero_table_t’ with no linkage used to declare variable ‘const __cmsis_start()::__zero_table_t __zero_table_end__’ with linkage
Compiling 'lora_sx1262.cpp'
board_config.h
lora_sx1262.cpp
In function ?void __cmsis_start()?:
type ‘const __cmsis_start()::__copy_table_t’ with no linkage used to declare variable ‘const __cmsis_start()::__copy_table_t __copy_table_start__’ with linkage
type ‘const __cmsis_start()::__copy_table_t’ with no linkage used to declare variable ‘const __cmsis_start()::__copy_table_t __copy_table_end__’ with linkage
type ‘const __cmsis_start()::__zero_table_t’ with no linkage used to declare variable ‘const __cmsis_start()::__zero_table_t __zero_table_start__’ with linkage
type ‘const __cmsis_start()::__zero_table_t’ with no linkage used to declare variable ‘const __cmsis_start()::__zero_table_t __zero_table_end__’ with linkage
Linking main_app.elf
Build complete

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