[Bug other/82352] link error 'defined in discarded section'

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82352

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |marxin at gcc dot gnu.org

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 42259
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42259&action=edit
Reduced single compilation unit test-case

Confirmed, following ICEs in GCC (with -fchecking):

g++-7 pr82352-2.cpp -O2 -c -fchecking
pr82352-2.cpp:42:7: warning: direct base ‘B’ inaccessible in ‘o’ due to
ambiguity
 class o : B, n
       ^
pr82352-2.cpp:51:1: error: comdat-local function called by void h::i() outside
its comdat
 }
 ^
_ZN1fI1oE1dEv.part.0/38 (void f<e>::d() [with e = o]) @0x149a95bd5450
  Type: function definition analyzed
  Visibility: comdat_group:_ZN1fI1oE1dEv artificial
  Same comdat group as: _ZN1fI1oE1dEv/26
  References: _ZTI1a/24 (addr)
  Referring: 
  Availability: local
  First run: 1
  Function flags: body local icf_merged split_part unlikely_executed
  Called by: _ZN1h1iEv.part.1/39 (1.00 per call) (can throw external)
_ZN1fI1oE1dEv/26 (can throw external) 
  Calls: __cxa_allocate_exception/31 (1.00 per call) __cxa_throw/32 (1.00 per
call) (can throw external) 
pr82352-2.cpp:51: confused by earlier errors, bailing out

Caused by my commit r246848.