[Bug middle-end/57366] gcc.dg/lto/attr-weakref-1 FAILs

[ro at CeBiTec dot Uni-Bielefeld.DE]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57366

--- Comment #10 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #9 from Jan Hubicka <hubicka at ucw dot cz> ---
> Hi,
> the following patch sets IDENTIFIER_TRANSPARENT_ALIAS correctly from lto-symtab
> (correct fix should do the same for variable aliases, too).  Now the testcase
> compiles for
> me on Linux with weakref disabled.  Does it work for you?

It does and is a considerable improvement: it fixes

-FAIL: g++.dg/lto/20091219 cp_lto_20091219_0.o-cp_lto_20091219_0.o link, -O3
-fl
to (internal compiler error)
-UNRESOLVED: g++.dg/lto/20091219 cp_lto_20091219_0.o-cp_lto_20091219_0.o
execute
 -O3 -flto

i.e. PR lto/47333 and several of the failures from this PR, but not all
of them:

 UNRESOLVED: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakr
ef-1_2.o execute -O2 -flto -flto-partition=none 
 FAIL: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakref-1_2
.o link, -O0 -flto -flto-partition=1to1  (internal compiler error)
 UNRESOLVED: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakr
ef-1_2.o execute -O0 -flto -flto-partition=1to1 
-FAIL: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakref-1_2
.o link, -O2 -flto -flto-partition=1to1 
-UNRESOLVED: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakr
ef-1_2.o execute -O2 -flto -flto-partition=1to1 
-FAIL: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakref-1_2
.o link, -O0 -flto 
-UNRESOLVED: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakr
ef-1_2.o execute -O0 -flto 
-FAIL: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakref-1_2
.o link, -O2 -flto
-UNRESOLVED: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakr
ef-1_2.o execute -O2 -flto

i.e. those failures remain:

FAIL: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakref-1_2.o link, -O0 -flto
-flto-partition=none 
UNRESOLVED: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakref-1_2.o execute -O0 -flto
-flto-partition=none 
FAIL: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakref-1_2.o link, -O2 -flto
-flto-partition=none 
UNRESOLVED: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakref-1_2.o execute -O2 -flto
-flto-partition=none 
FAIL: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakref-1_2.o link, -O0 -flto
-flto-partition=1to1  (internal compiler error)
UNRESOLVED: gcc.dg/lto/attr-weakref-1
c_lto_attr-weakref-1_0.o-c_lto_attr-weakref-1_2.o execute -O0 -flto
-flto-partition=1to1 

Btw., the patch has a few formatting issues: indentation and line
length.

Thanks.
    Rainer