Resolved! Extra parentheses in HAL_DACEx_ClearConfigAutonomousMode() (in stm32u5xx_hal_dac_ex.c)
In HAL_DACEx_ClearConfigAutonomousMode(), a test is surrounded by parentheses that are clearly unnecessary in code generated by STM32CubeMx.This is not very important... but it generates warnings that I check at each compilation...