Bug in gas: frags.c @ frag_align (absolute section alignment)

[Serge Nikulin]

Hi,

As I reported already, I had a problem with alignment in absolute section.
I found the bug in frags.c file in frag_align function.

Old buggy code:
---------
      new_off = ((abs_section_offset + alignment - 1)
   &~ ((1 << alignment) - 1));
---------

When abs_section_offset == 1 and alignment == 1 then new_off should be == 2

In the above code new_off == 0

The proposed new code:
-------------------
if ((abs_section_offset & ((1 << alignment) - 1)) != 0)
    new_off = ((abs_section_offset  >> alignment) + 1) << alignment;
else
    new_off = abs_section_offset;    /* aligned already */
-------------------

Serge