[Bug lto/81968] [8 regression] early lto debug objects make Solaris ld SEGV

["rguenther at suse dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81968

--- Comment #1 from rguenther at suse dot de <rguenther at suse dot de> ---
On August 24, 2017 4:18:45 PM GMT+02:00, "ro at gcc dot gnu.org"
<gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81968
>
>            Bug ID: 81968
>        Summary: [8 regression] early lto debug objects make Solaris ld
>                    SEGV
>           Product: gcc
>           Version: 8.0
>            Status: UNCONFIRMED
>          Severity: normal
>          Priority: P3
>         Component: lto
>          Assignee: unassigned at gcc dot gnu.org
>          Reporter: ro at gcc dot gnu.org
>              CC: marxin at gcc dot gnu.org, rguenth at gcc dot gnu.org
>  Target Milestone: ---
>            Target: *-*-solaris2.11
>
>The Early LTO Debug patches caused a large number of testsuite
>regressions on
>Solaris when using /bin/ld:
>
>+UNRESOLVED: g++.dg/lto/20101010-4
>cp_lto_20101010-4_0.o-cp_lto_20101010-4_0.o
>execute  -std=c++0x -flto -g -r -nostdlib 
>+FAIL: g++.dg/lto/20101010-4
>cp_lto_20101010-4_0.o-cp_lto_20101010-4_0.o link, 
>-std=c++0x -flto -g -r -nostdlib 
>
>They all are like
>
>FAIL: c-c++-common/cilk-plus/CK/cilk-for-2.c  -O3 -flto -g  (test for
>excess
>errors)
>Excess errors:
>collect2: fatal error: ld terminated with signal 11 [Segmentation
>Fault]
>compilation terminated.
>ld: warning: file /var/tmp//ccOFDEXadebugobjtem: section [1] has
>invalid type [
>SHT_NULL ]
>ld: warning: file /var/tmp//ccOFDEXadebugobjtem: section [5] contains
>both
>SHF_EXCLUDE and SHF_ALLOC flags: SHF_EXCLUDE ignored
>
>The same problem happens when gcc is configured to use gas and ld
>instead of
>as/ld, sparc and x86, 32 and 64-bit.
>
>Clearly a SEGV isn't the best error handling, and I'm not yet certain
>if the
>errors
>are benign.  OTOH, I don't yet know why the objects are created this
>way.

They are created that way to make my life easier. They are supposed to be valid
ELF objects and they are according to the specs and my interpretation. 

>
>  Rainer