[Bug lto/63286] New: [5 Regression] FAIL: g++.dg/lto/20101014-2 cp_lto_20101014-2_0.o assemble, * after r215196

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63286

            Bug ID: 63286
           Summary: [5 Regression] FAIL: g++.dg/lto/20101014-2
                    cp_lto_20101014-2_0.o assemble, * after r215196
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dominiq at lps dot ens.fr
                CC: hjl.tools at gmail dot com, hubicka at ucw dot cz, iains at gcc dot gnu.org

The following tests have started to fail after r215196 (see
https://gcc.gnu.org/ml/gcc-regression/2014-09/msg00067.html) with both -m32 and
-m64:

FAIL: g++.dg/lto/20101014-2 cp_lto_20101014-2_0.o assemble, -O0 -flto
-flto-partition=none  (internal compiler error)
FAIL: g++.dg/lto/20101014-2 cp_lto_20101014-2_0.o assemble, -O2 -flto
-flto-partition=none  (internal compiler error)
FAIL: g++.dg/lto/20101014-2 cp_lto_20101014-2_0.o assemble, -O0 -flto
-flto-partition=1to1  (internal compiler error)
FAIL: g++.dg/lto/20101014-2 cp_lto_20101014-2_0.o assemble, -O2 -flto
-flto-partition=1to1  (internal compiler error)
FAIL: g++.dg/lto/20101014-2 cp_lto_20101014-2_0.o assemble, -O0 -flto 
(internal compiler error)
FAIL: g++.dg/lto/20101014-2 cp_lto_20101014-2_0.o assemble, -O2 -flto (internal
compiler error)

The ICE is

/opt/gcc/work/gcc/testsuite/g++.dg/lto/20101014-2_0.C:8:23: sorry,
unimplemented: mangling save_expr
/opt/gcc/work/gcc/testsuite/g++.dg/lto/20101014-2_0.C:8:49: internal compiler
error: in verify_curr_properties, at passes.c:1862