[Bug lto/63409] New: [5 Regression] FAIL: g++.dg/lto/pr63270 cp_lto_pr63270_0.o-cp_lto_pr63270_1.o link, -flto -O2 -Wno-odr -fno-linker-plugin

["ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63409

            Bug ID: 63409
           Summary: [5 Regression] FAIL: g++.dg/lto/pr63270
                    cp_lto_pr63270_0.o-cp_lto_pr63270_1.o link, -flto -O2
                    -Wno-odr -fno-linker-plugin
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ubizjak at gmail dot com

This can be triggered on Fedora20 with:

make check-c++ RUNTESTFLAGS="--target_board=unix/-fno-use-linker-plugin
lto.exp=pr63270_?.C"

spawn -ignore SIGHUP /ssd/uros/gcc-build/gcc/testsuite/g++/../../xg++
-B/ssd/uros/gcc-build/gcc/testsuite/g++/../../ cp_lto_pr63270_0.o
cp_lto_pr63270_1.o -fno-diagnostics-show-caret -fdiagnostics-color=never
-nostdinc++
-I/ssd/uros/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include/x86_64-unknown-linux-gnu
-I/ssd/uros/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/include
-I/home/uros/gcc-svn/trunk/libstdc++-v3/libsupc++
-I/home/uros/gcc-svn/trunk/libstdc++-v3/include/backward
-I/home/uros/gcc-svn/trunk/libstdc++-v3/testsuite/util -fmessage-length=0 -flto
-O2 -Wno-odr
-L/ssd/uros/gcc-build/x86_64-unknown-linux-gnu/./libstdc++-v3/src/.libs
-B/ssd/uros/gcc-build/x86_64-unknown-linux-gnu/./libstdc++-v3/src/.libs
-L/ssd/uros/gcc-build/x86_64-unknown-linux-gnu/./libstdc++-v3/src/.libs
-fno-use-linker-plugin -o g++-dg-lto-pr63270-01.exe
cp_lto_pr63270_0.o: In function `v8::internal::fn1()':
pr63270_0.C:(.text+0xa): undefined reference to `v8::internal::B::B(int)'
pr63270_0.C:(.text+0x16): undefined reference to `v8::internal::B::B(int)'
pr63270_0.C:(.text+0x22): undefined reference to `v8::internal::A::A(int)'
pr63270_0.C:(.text+0x27): undefined reference to `v8::internal::G::m_fn1()'
collect2: error: ld returned 1 exit status
compiler exited with status 1
output is:
cp_lto_pr63270_0.o: In function `v8::internal::fn1()':
pr63270_0.C:(.text+0xa): undefined reference to `v8::internal::B::B(int)'
pr63270_0.C:(.text+0x16): undefined reference to `v8::internal::B::B(int)'
pr63270_0.C:(.text+0x22): undefined reference to `v8::internal::A::A(int)'
pr63270_0.C:(.text+0x27): undefined reference to `v8::internal::G::m_fn1()'
collect2: error: ld returned 1 exit status

FAIL: g++.dg/lto/pr63270 cp_lto_pr63270_0.o-cp_lto_pr63270_1.o link, -flto -O2
-Wno-odr
UNRESOLVED: g++.dg/lto/pr63270 cp_lto_pr63270_0.o-cp_lto_pr63270_1.o execute
-flto -O2 -Wno-odr