[Bug lto/47274] [4.6 regression] ICE in lto_varpool_replace_node, at lto-symtab.c:306

["davek at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47274

--- Comment #23 from Dave Korn <davek at gcc dot gnu.org> 2011-01-31 18:53:30 UTC ---
(In reply to comment #21)

> The problem is that first one is defined as prevailing_def_ironly while it is
> not an definition, just use of the symbol. Correct would be to have
> PREVAILING_DEF_IRONLY on the second and PREEMTED_IR on the first. 
> We probably should add sanity check that functions with PREVAILING_DEFs are
> always analyzed and vars finalized.
> 
> As observer by Richard, it comes from resolution file already:
> abs-1.o 3
> 70 262910e5 PREEMPTED_IR main_test
> main.o 3
> 76 e5772d37 PREVAILING_DEF_IRONLY main_test
> should be the other way around

  Why would you expect to see PREEMPTED_IR?  There is only one definition of
main_test; I would expect RESOLVED_IR.  Rather than swapped, aren't they just
plain wrong?

> I am quite convinced that we are seeing GNU LD bug and adding Dave Korn to CC
> thus. 

  I also think you must be seeing a bug in LD, but haven't reproduced it yet;
on both x86_64-linux and i686-cygwin I get the same correct resolution file:

davek@gcc10:~/binutils/obj-gcc/gcc/pr47274$ cat *.res
3
abs-1.o 2
79 7d1d28a3 PREVAILING_DEF_IRONLY main_test
93 7d1d28a3 PREVAILING_DEF_IRONLY abs_called
abs-1-lib.o 2
110 4db0e4c5 RESOLVED_IR inside_main
112 4db0e4c5 RESOLVED_IR abs_called
main.o 4
79 8cf841f3 PREVAILING_DEF main
85 8cf841f3 PREVAILING_DEF_IRONLY link_error
89 8cf841f3 RESOLVED_IR main_test
99 8cf841f3 PREVAILING_DEF_IRONLY inside_main

  What endian-ness are the ppc and hppa targets?