Weird app crash after stripping and strip idea in general
Weird app crash after stripping and strip idea in general
- Subject: Weird app crash after stripping and strip idea in general
- From: Platon Fomichev <email@hidden>
- Date: Thu, 25 Jun 2009 23:54:01 +0400
Good day everyone.
I have an interesting problem - I really hope someone can explain me
some (basics?) on GCC on OS X behavior. First of all - I have a big C+
+ application - it's actually a 'DDD' debugger. Recently I rebuilt it
on 10.5 with latest XCode and GCC 4.2. To my surprise the app started
crashing quite a lot. The culprit was strip command. If I do not use
'strip' or use 'strip -x' the app works correctly. I can try to debug
this but it's really possible only if there is enough interest to
this problem, but before the major question - so what's this - can it
be possible that 'strip' can cause app crashes?
Now a more generic problem - why do I see application symbols even
after complete strip? On BSD after stripping there are no symbols in
executable except undefined, but on OS X there are so much symbols..
If I take into account 'DDD' it's hundreds of symbols - I will use c+
+filt tomorrow to see what are they exactly. Even if I create a small
app with two classes 'A' and 'B' I still get after all possible
optimizations and stripping -
00002018 S vtable for A
00002028 S vtable for B
Why are VTables visible as symbols even after strip?
Best regards,
Platon
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