Question

I’m using a struct like this:

define struct _Fragment{
     int a;
     char *seq;
}Fragment;

I want to initialize the struct, and using the malloc() method return a dynamic memory like this

Fragment *frag=malloc(10*sizeof(Fragment));

Then I would using the frag pointer like this:

frag->seq="01001";

Then the problem occurs when I returns a lot of Fragments. the error message said that (using valgrind tool):

Uninitialised value was created by a heap allocation

who can tell me how I can deal with it. thank you!

Answer 1

I’m not sure you have a real problem here, but for proper etiquette, your allocation would be:

Fragment *frag=malloc(10*sizeof(Fragment));
if (frag) memset(frag,0,10*sizeof(Fragment));