[Bug lto/47287] FAIL: gcc.c-torture/execute/builtins/20010124-1.c execution with -flto

["dave at hiauly1 dot hia.nrc.ca" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47287

--- Comment #4 from dave at hiauly1 dot hia.nrc.ca 2011-01-17 15:12:38 UTC ---
> I suppose you are using GNU ld, right?

Yes (gold has not been ported).

> On trunk x86_64 with stock binutils 2.21 I get
> 
> > cat 20010124-1.res
> 3
> 20010124-1.o 3
> 79 2651d4ed PREVAILING_DEF_IRONLY main_test
> 85 2651d4ed RESOLVED_IR g
> 110 2651d4ed RESOLVED_IR f
> 20010124-1-lib.o 3
> 113 f6a75653 PREVAILING_DEF_IRONLY f
> 127 f6a75653 PREVAILING_DEF_IRONLY g
> 153 f6a75653 RESOLVED_IR inside_main
> main.o 3
> 79 2cccb08f PREVAILING_DEF main
> 85 2cccb08f RESOLVED_IR main_test
> 88 2cccb08f PREVAILING_DEF_IRONLY inside_main
> 
> thus, memcpy is also missing but at least main_test is correctly
> used from 20010124-1.o.
> 
> Thus - can you tell us your exact GNU ld version and maybe debug
> what is the lto_symtab contents we generate (there is a lto-plugin/lto-symtab.c
> program, not sure if it still works ...)

It has been rebuilt a number of times recently.  Last night's test run
still shows the bug and it used:

dave@gsyprf11:~/gcc-4.6/objdir$ ld --version
GNU ld (GNU Binutils) 2.21.51.20110116

I tried to do a build without plugin support, but it seems there is a
ld configure bug and plugin support can't be disabled.  With older versions,
I think plugin support had to be explicitly enabled (default was no).

I'll try to debug the lto_symtab contents tonight.

Dave