Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32c0/STM32C011/SYSCFG/SYSCFG_ITLINE0#0x0
SYSCFG interrupt line 0 status register
Window watchdog interrupt pending flag
https://github.com/modm-io/cmsis-svd-stm32