[Bug target/36955] New: TLS LIBCALL change breaks libstdc++ built with older binutils

["janis at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

This testcase (yes, it's actually huge):

  #include <iostream>

  int
  main ()
  {
    std::cerr << "writing to cerr" << std::endl;
  }

segfaults in libstdc++ when powerpc-linux mainline GCC is configured with
--enable-secureplt and uses 2.16 binutils (specifically, I used 2.16.91.0.5
20051219 (SUSE Linux)).  It works fine with 2.18 binutils or without
--enable-secureplt.

The failure begins with this patch:

http://gcc.gnu.org/viewcvs?view=rev&rev=135961

r135961 | zadeck | 2008-05-26 23:37:05 +0000 (Mon, 26 May 2008) | 14 lines

2008-05-26  Steven Bosscher  <stevenb.gcc@gmail.com>

        * config/rs6000/rs6000.c (rs6000_legitimize_tls_address): Generate
        new tls_gd_* and tls_ld_* insns instead of an insn sequence.
        * config/rs6000/rs6000.md (TLSmode, tls_abi_suffix, tls_insn_suffix,
        tls_sysv_suffix): New mode and mode attribute iterators.
        (tls_gd_32, tls_gd_64, tls_ld_32, tls_ld_64): Remove.
        (lts_gd_aix*, tls_gd_sysv*, tls_ld_aix*, tls_ld_sysv*): New patterns.
        (tls_dtprel_*, tls_dtprel_ha_*, tls_dtprel_lo_*, tls_got_dtprel_*,
        tls_tprel_*, tls_tprel_ha_*, tls_tprel_lo_*, tls_got_tprel_*,
        tls_tls_*): Merge 32 bit and 64 bit variants using aforementioned
        iterators.


-- 
           Summary: TLS LIBCALL change breaks libstdc++ built with older
                    binutils
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: janis at gcc dot gnu dot org
GCC target triplet: powerpc-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36955