When we try to allocate memory with malloc for an array of data points, we
always get “memory fault, core dumped”, here is part of our code:
a=(int)(ref_time1000);
output_array=malloc(asizeof(double));
if(output_array==NULL)
{
break;
}
What does “memory fault, core dumped” mean?
malloc always takes the value of : 134544568, even if “a” is only 1000.
why does malloc take that value automatically? Is there a way to set the max
value of malloc?
thanx
Can you show us the declarations of ‘a’ and ‘output_array’? What do you
mean ‘malloc takes the value of’? Do you mean that it returns that value?
This is normal because malloc will return a pointer to memory.
cheers,
Kris
“Jun” <nustzhujun@hotmail.com> wrote in message
news:a7o3gt$qin$1@inn.qnx.com…
When we try to allocate memory with malloc for an array of data points, we
always get “memory fault, core dumped”, here is part of our code:
a=(int)(ref_time1000);
output_array=malloc(asizeof(double));
if(output_array==NULL)
{
break;
}What does “memory fault, core dumped” mean?
malloc always takes the value of : 134544568, even if “a” is only 1000.
why does malloc take that value automatically? Is there a way to set the
max
value of malloc?thanx
Jun <nustzhujun@hotmail.com> wrote:
When we try to allocate memory with malloc for an array of data points, we
always get “memory fault, core dumped”, here is part of our code:
a=(int)(ref_time1000);
output_array=malloc(asizeof(double));
if(output_array==NULL)
{
break;
}What does “memory fault, core dumped” mean?
It means, generally that you tried to reference memory that wasn’t
mapped into your process, and that a debug output file for your program
that can be loaded into a debugger (gdb) has been generated.
Bad memory access usually means you derefernced a bad pointer.
malloc always takes the value of : 134544568, even if “a” is only 1000.
why does malloc take that value automatically? Is there a way to set the max
value of malloc?
What do you mean “malloc take the value of” – do you mean it returns that
value?
That might, actually, be expected – the available free space in your
program could always be the same.
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