topic C++ class variables are not initialized in S32 Design Studio

C++ class variables are not initialized

__invited__hari — Fri, 29 Jun 2018 23:49:51 GMT

Hi,

I am facing weird problem with C++.

With the below example, the print message supposed to be 'Value=22'. But I am seeing it as 'Value=1".

May I know the reason for it please?

FYI, I am using S32DS for ARM C++ Application.

Thanks,

Hari

#include "S32K148.h" /* include peripheral declarations S32K148 */
#include <stdio.h>

class MyClass
{
public:
   int a=10;
   MyClass()
   {
      a += 11;
   }
};

MyClass myClass;

void func1(void)
{
int x = ++myClass.a;
printf("Value=%d",x);
}

int main()
{
func1();

while(1);
return 0;
}

jiri_kral — Mon, 02 Jul 2018 14:47:10 GMT

Hi,

it looks like that there is bug in startup file - thanks for report. You can fix it by adding

bl _start

instead

bl main

in the startupS32K148.S file:

Hope it helps.

Jiri

__invited__hari — Mon, 02 Jul 2018 16:16:11 GMT

Thank you Jiri.

That works. Appreciated your quick turnaround.

Best,

Hari