Removing variables used in unused functions

Hello,

I'm having issue with removing unused variables, when they are used in unused functions.

I'm using Keil 5.25.2.0, armcc.exe and armlink.exe V5.06 update 6 build 750. My project options are set for space optimization:
- Use cross-module optimization
- One ELF section per function
- -O2 -Ospace
- --remove
My MCU is a STM32F0, Cortex M0.

Here is a sample of what I do :

int unused_data[100];

main(){

some code...

my_unused_function();

some more code...

}

void my_unused_function(void){

int i;
for(i=0; i<100; i++) unused_data[i] = i;

}

When adding unused_data and my_unused_function(), I can see the code increasing, and 100 bytes of data being added to ZI-data. So far so good.

When commenting the call to my_unused_function(), the code decreases as expected. I get the original code size (when the function was not there), which means it has been successfully removed.

But ZI-data doesn't decrease, the variable is still there. And only if I comment "unused_data[i] = i;", then unused_data is successfully removed.

So I have this variable, used only in an unused function, which is virtually unused. But the linker doesn't seem to see this, and doesn't remove it. Which is quite a problem, this actually prevents my code to fit into the RAM of my MCU.

So how can I tell the linker to remove this (and all the other) unused variables ?