Write tests for gc_realloc()

[mkirchner]

We don't have any tests for gc_realloc() in test_gc.c yet, those would be great to have.

[ganesh-k13]

So the checks/asserts that need to be done are:

1. Pass an invalid pointer to realloc and check for NULL return.
2. Pass NULL ptr and check for alloc.
3. Do a normal realloc.

In all the cases we do a gc_allocation_map_get and assert the size.

Is this it or anything else to cover? I'll wait a few days for any new contributors else, I'll take it up.

[mkirchner]

@ssrlive Deleting your comment here, moved it to #47 .

[mkirchner]

@ganesh-k13 yes, that makes sense. With gc_realloc() it's important to test every code path (the realloc() fail is ok to ignore, not worth the effort here) and a combination of your suggestions and confirming it on coveralls should give you all required cases.

[ganesh-k13]

Hey @mkirchner, this line:

gc/src/gc.c

Line 448 in e5ebe36

gc_allocation_map_put(gc->allocs, p, size, alloc->dtor);

it should be q right, not p?

[mkirchner]

Nicely spotted! ... and that’s why we need tests for gc_realloc() ;)