http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53831
--- Comment #12 from Richard Guenther 2012-07-03
13:17:12 UTC ---
Created attachment 27735
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27735
adjusted testcase
Certainly valid testcase w/o inline. Fails at -O0 even, added
-fno-fat-lto-ob
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53831
--- Comment #11 from Richard Guenther 2012-07-03
13:11:59 UTC ---
(In reply to comment #10)
> > if I use -fno-fat-lto-objects I get a maybe more easily to debug linker
> > failure
>
> I guess that's because in this case archive symtab doesn't r
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53831
--- Comment #10 from Yuri Gribov 2012-07-03
12:59:01 UTC ---
> if I use -fno-fat-lto-objects I get a maybe more easily to debug linker
> failure
I guess that's because in this case archive symtab doesn't reference any
symbols at all (which is a
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53831
--- Comment #9 from Richard Guenther 2012-07-03
12:54:07 UTC ---
Or your program is invalid because you have no inline definition where you
have a use.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53831
--- Comment #8 from Richard Guenther 2012-07-03
12:46:36 UTC ---
So I think GCC is wrong to optimize away C::f() from impl.cpp and your analysis
is correct. It is referenced from the vtable and we output that.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53831
Richard Guenther changed:
What|Removed |Added
CC||rafael.espindola at gmail
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53831
--- Comment #6 from Yuri Gribov 2012-07-03
12:16:21 UTC ---
First of all note that we are talking about _ZN1C1fEv (not _ZN1C1gEv!) here.
I agree that linker doesn't mention it in the resolution file but I think this
happens because it's missing
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53831
--- Comment #5 from Richard Guenther 2012-07-03
10:59:57 UTC ---
(In reply to comment #4)
> (In reply to comment #3)
> > I don't think linker can do much after gcc removes the symbol from symtab.
>
> I belive the contract between the linker and
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53831
--- Comment #4 from Richard Guenther 2012-07-03
10:52:42 UTC ---
(In reply to comment #3)
> I don't think linker can do much after gcc removes the symbol from symtab.
I belive the contract between the linker and GCC is that GCC can introduce
new
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53831
--- Comment #3 from Yuri Gribov 2012-07-03
10:45:09 UTC ---
I don't think linker can do much after gcc removes the symbol from symtab.
BTW it would help a lot if linker verified that LTO and ELF symtabs actually
match. Currently mismatches cause
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53831
Richard Guenther changed:
What|Removed |Added
Target|arm-linux-androideabi |arm-linux-androideabi,
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53831
--- Comment #1 from Yuri Gribov 2012-07-02
19:52:16 UTC ---
Created attachment 27731
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27731
Small project which demonstrates the bug
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