[Bug target/86651] [8/9 Regression] lto-wrapper.exe: fatal error: simple_object_copy_lto_debug_sections not implemented: Invalid argument

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86651

--- Comment #13 from rguenther at suse dot de <rguenther at suse dot de> ---
On Sun, 29 Jul 2018, andris at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86651
> 
> Andris Pavenis <andris at gcc dot gnu.org> changed:
> 
>            What    |Removed                     |Added
> ----------------------------------------------------------------------------
>                  CC|                            |andris at gcc dot gnu.org
> 
> --- Comment #12 from Andris Pavenis <andris at gcc dot gnu.org> ---
> Did some testing with gcc-8.2.0 built as both native compiler for DJGPP and as
> Linux to DJGPP cross-compiler on Arch Linux (same build as one gets using
> https://aur.archlinux.org/packages/djgpp-gcc/) and new one with proposed patch
> applied additionally (added -msse to command line to avoid some unnecessary
> warnings)
> 
> Arch Linux:
> 
> 1) without proposed patch and -g<n> (where n missing or greater than 1):
> lto-wrapper: vakava virhe: simple_object_copy_lto_debug_sections not
> implemented: Virheellinen argumentti
> 
> 2) with -g0 (patch do not have any influence in this case) or with proposed
> patch applied:
> lto1: virhe: two or more sections for
> .gnu.lto__ZNSt8__detail16_Hashtable_allocISaINS_10_Hash_nodeISt4pairIKhN2jw2io3keyEELb0EEEEE21_M_deallocate_bucketsEPPNS_15_Hash_node_baseEm.e29cca957c80c524
> (null):0: hämmentynyt aikaisemmista virheistä, poistutaan
> lto-wrapper: vakava virhe: i686-pc-msdosdjgpp-g++ returned 1 exit status

That looks like an unrelated bug to me.

> DJGPP native compiler (only tested with patch applied):
> lto1.exe: error: two or more sections for
> .gnu.lto__ZNSt16allocator_traitsISaINSt8__detail10_Hash_nodeISt4pairIKhN2jw2io3keyEELb0EEEEE7destroyIS7_EEvRS9_PT_.e5d8ced6
> (null):0: confused by earlier errors, bailing out
> lto-wrapper.exe: fatal error: C:\DJGPP\BIN/gpp.exe returned 1 exit status
> compilation terminated.
> collect2.exe: fatal error: lto-wrapper returned 1 exit status
> 
> Compiling simple program did not work earlier for native compiler fir DJGPP
> target before when both -flto and -g where specified but works after proposed
> patch is applied.
> 
> So we have 2 bugs and patch only fixes one of them.

Yes, let's track the other bug in another PR.