>>Can you precise what ARM device you are using (STR71x, STR73x, STR75x, STR91x, STM32)?
I'm using STM32F10x
>>Did you use some specific functions from the standard C library (functions from stdio, stdlib, etc...)?
No

if you can send us a project that reproduces the problem, it will be easier for us to understand where it comes from.

thanks
Lionel

I'm sorry the application uses the calloc, realloc functions. I hope this will be helpful
if not I can send you the project

Indeed, I think the problem comes from here. Dynamic allocation needs a heap, and you must create and reference it in order for the library to work.
Please also note that we never tested it so it may not work correctly or may even not be implemented by this GNU standard library port, because we never use dynamic allocation ourselves on embedded cpus.

Lionel

Hello,

I have read this post. I am using function calloc as well and I have some problems in execution. I mean, when the fuction calloc is used in the program it goes some strange place of the memory and the program "hangs". Well, I know how the function calloc works in theory, but I think that somethins is missing in my code. Could someone explain how to reserve some space of memory for calloc use or how I should do to use calloc. What a heap is? How can use it?

Thanks,
Santi