bug in heap command #568 (fix) (#571)

* add support of PIE for r2

* Update radare2.py

API update

* fix bug in command heap

* Update heap.py

pwndbg/commands/heap.py

@@ -97,8 +97,15 @@ def heap(addr=None):
 
     # Print out all chunks on the heap
     # TODO: Add an option to print out only free or allocated chunks
+
+    # Check if there is an alignment at the start of the heap
+    size_t = pwndbg.arch.ptrsize
+    first_chunk_size = pwndbg.arch.unpack(pwndbg.memory.read(addr + size_t, size_t))
+    if first_chunk_size == 0:
+        addr += size_t * 2  # Skip the alignment
+
     while addr < page.vaddr + page.memsz:
-        chunk = malloc_chunk(addr)
+        chunk = malloc_chunk(addr)  # Prints the chunk
         size = int(chunk['size'])
 
         # Clear the bottom 3 bits