topic malloc system calls fail in S32 Design Studio in S32 Design Studio

malloc system calls fail in S32 Design Studio

mrajanna — Mon, 06 Nov 2017 03:57:20 GMT

Hi,

I am unable to make malloc calls in the code. Can you please check it?

*************************************************

struct node

{

char data[5];

struct node *next;

}*head;

struct node *nptr;

nptr = malloc(sizeof(struct node));

*************************************************

When I move mouse tooltip on nptr in above code, I see below warning.

/*******************

Multiple errors reported.

1) Failed to execute MI command:

-var-create - * nptr

Error message from debugger back end:

value has been optimized out

2) Unable to create variable object

3) Failed to execute MI command:

-var-create - * nptr

Error message from debugger back end:

value has been optimized out

*******************/

Thanks

Mohan

martin_kovar — Mon, 06 Nov 2017 07:19:41 GMT

Hello Mohan,

which version of S32 Design Studio you use and which architecture (Power Architecture, ARM...)?

Could you please share the whole example?

Regards,

Martin

jiri_kral — Mon, 06 Nov 2017 07:47:47 GMT

Hi Mohan,

it is some error with PE Micro debugging. Try to restart S32DS. Did you also include <stdlib.h> header ?

Anyway - usage dynamically allocated memory in embedded systems - and especially in automotive industry - is not good practice.

Jiri