[Bug c++/56088] New: LTO error: error:=?UTF-8?Q?=20inlining=20failed=20in=20call=20to=20always=5Finline=20=E2=80=98vswprintf=E2=80=99?=: recursive inlining

[vhaisman at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56088

             Bug #: 56088
           Summary: LTO error: error: inlining failed in call to
                    always_inline ‘vswprintf’: recursive inlining
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: vhaisman@gmail.com


Created attachment 29258
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29258
bug sources

I am seeing the following compilation/linking error that I am not seeing with
non-LTO builds:

--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<
In file included from :256:0:
/usr/include/x86_64-linux-gnu/bits/wchar2.h: In function
‘_ZN9__gnu_cxx12__to_xstringISbIwSt11char_traitsIwESaIwEEwEET_PFiPT0_mPKS6_P13__va_list_tagEmS9_z.constprop.0’:
/usr/include/x86_64-linux-gnu/bits/wchar2.h:316:28: error: inlining failed in
call to always_inline ‘vswprintf’: recursive inlining
 __NTH (vswprintf (wchar_t *__restrict __s, size_t __n,
                            ^
In file included from
/home/wilx/gcc48/include/c++/4.8.0/bits/stl_algobase.h:3320:0,
                 from :1177:
/usr/include/x86_64-linux-gnu/bits/wchar2.h:322:50: error: called from here
   return __vswprintf_alias (__s, __n, __fmt, __ap);
                                                  ^
lto-wrapper: g++-4.8 returned 1 exit status
/usr/bin/ld.gold: fatal error: lto-wrapper failed
collect2: error: ld returned 1 exit status
--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<--8<

I am attaching the single .o file that reproduces the problem for me. Here is a
command line that causes it for me:

g++-4.8 -v -fPIC -DPIC -r -nostdlib ./timehelper.o -march=native -O3 -flto
-flto-partition=none -fuse-linker-plugin -o out.so