CC1310 heap area is set to 0 but what does the compiler/linker when calloc is used

tunguskar

Hi,

As mentioned in the title. We have set the heap in the project settings to 0. We now integrated a stack which uses calloc. My

Question is what happens in this case. I get no error. What is the behavior in this case of the system?

Kind Regards

over 3 years ago

0 Chester Gillon over 3 years ago

Guru 92251 points

tunguskar said:
We now integrated a stack which uses calloc

Does the stack check the return value from calloc()?

I would expect calloc() to return a NULL pointer if the heap size has been set in the project settings to 0.

0 tunguskar over 3 years ago in reply to Chester Gillon

Intellectual 410 points

The calloc works fine. Wich I did not expect.

/* HeapMem Primary Heap configuration */

define symbol HEAPSIZE = 0x0000;

define block primary_heap with alignment = 8, size = HEAPSIZE { };

Ich could check where it puts the allocated stuff but in my opinion this shouldnt be possible.

0 Sid over 3 years ago in reply to tunguskar

TI__Mastermind 20407 points

Hi,

After you build the project, please can you check the map file for heapstart and heapend addresses.

To verify that the heap is indeed allocated a size of 0.

Regards,

Sid

0 tunguskar over 3 years ago in reply to Sid

Intellectual 410 points

__primary_heap_end__ {Abs}
0x2000'4bff Data Gb <internal module>
__primary_heap_start__ {Abs}
0x2000'4bff Data Gb <internal module>

0 Sid over 3 years ago in reply to tunguskar

TI__Mastermind 20407 points

Hi,

Please can you mention which stack you added, it is possible that the stack itself has some heap allocation requirement. Not sure about this. But can you elaborate on which stack was added and if possible, which examples in the sdk the project is based on?

Regards,

Sid

Arm-based microcontrollers

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CC1310 heap area is set to 0 but what does the compiler/linker when calloc is used