Hardfault for STM32L

Hello,

When i'm debugging my code, it's getting into the HardFault handler. In others compilers such as Keil it does not happen.

When i comment the function which turns into a hardfault, another function will turn into the hardfault. It is not a specific function that gives the hardfault.

I've read something about the stack size, but what should the stack size be in my settings to avoid this hardfault?