On 3/25/13 12:45 PM, Phil Blundell wrote:
On Mon, 2013-03-25 at 12:10 -0500, Mark Hatle wrote:
I'm going to look into identifying if the section is a NOBITS and skipping the
whole operation if it is.
That would mean that a change in the size of the .bss wouldn't have any
impact on the hash. Maybe that's fine for your application though, I
dunno.
I'm not completely familiar with how the buildid is calculated, other then an
md5 hash over the sections themselves. I can't think of a case where the
contents of the sections wouldn't change along with the .bss and .plt size.
(buildid is supposed to be used by gdb to find/verify that the debuginfo matches
the binary actually being debugged...)
Through my google search, I never found a full spec of what the buildid was
supposed to contain, only a high-level description from an old Fedora 8 work
item. (Note, as long the buildid is consistent it really doesn't appear to
matter how it was generated, just that both the app and debuginfo contain it.)
--Mark
p.
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