Is it possible to declare multiple static variable with same name in a single C file?
- by Mohammed Khalid Kherani
Hi Experts,
Is it possible to declare multiple static variables of same name in a single C file with different scopes?
I wrote a simple programme to check this and in gcc it got compiled and worked fine.
code:
static int sVar = 44;
void myPrint2()
{
printf("sVar = %d\n", sVar++);
}
void myPrint()
{
static int sVar =88;
printf("sVar = %d\n", sVar++);
}
int main(void)
{
static int sVar = 55;
int i = 0;
for (i = 0; i < 5; i++)
myPrint();
printf("sVar = %d\n", sVar);
myPrint2();
return(0);
}
Now my question is since all "static" variable will reside in same section (.data) then how we can have multiple variable with same name in one section?
I used objdump to check the different section and found that all Static variables (sVar) were in .data section but with different names
0804960c l O .data 00000004 sVar
08049610 l O .data 00000004 sVar.1785
08049614 l O .data 00000004 sVar.1792
Why compiler is changing the name of variables (since C doesnt support name mangling)?
Thanks in advance.
