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

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

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.

  Rainer