STM32 WWDG interrupt firing when not configured

Question

I have an application that I am porting from the Keil IDE to build with the GNU toolchain due to license issues. I have successfully be able to set up, build, flash and run the

Answer 1

The core problem is that the Default Handler is called instead of another irq handler. I doubt that our situations are the same but here is my solution:

I was working on a c++ project, the same happened to me. This was the first time I made a project from scratch & with CMSIS. After some unsuccessful attempts I went through a generated project when I noticed that in the stm32xxxx_it.h the IRQ handler function prototypes are guarded by these:

extern "C"
{
    void TIM7_IRQHandler(void);
}

With these guards the linker could find my own interrupt handler functions.