[Bug middle-end/57500] New: [4.9 Regression] Segfault in ipa_record_reference

[dje at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57500

            Bug ID: 57500
           Summary: [4.9 Regression] Segfault in ipa_record_reference
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dje at gcc dot gnu.org

Symtab cleanups 2/17 introduces 45 new failures in libstdc++ testsuite on AIX.

#0 
_Z20ipa_record_referenceP15symtab_node_defS0_11ipa_ref_useP18gimple_statement_d
(referring_node=0x70d3ad58, referred_node=0x0, use_type=IPA_REF_ALIAS, 
    stmt=0x0) at /nasfarm/dje/src/src/gcc/ipa-ref.c:338
#1  0x10560b10 in _Z20symtab_resolve_aliasP15symtab_node_defS0_ (
    node=0x70d3ad58, target=0x0) at /nasfarm/dje/src/src/gcc/symtab.c:928
#2  0x10592028 in _Z32cgraph_process_same_body_aliasesv ()
    at /nasfarm/dje/src/src/gcc/cgraphunit.c:660
#3  0x106d2574 in _Z28cp_write_global_declarationsv ()
    at /nasfarm/dje/src/src/gcc/cp/decl2.c:3999
#4  0x10000b14 in _ZL12compile_filev ()
    at /nasfarm/dje/src/src/gcc/toplev.c:558
#5  0x10003734 in _Z11toplev_mainiPPc (argc=9, argv=0x2ff228a8)
    at /nasfarm/dje/src/src/gcc/toplev.c:1872
#6  0x10000410 in main (argc=<error reading variable>, 
    argv=<error reading variable>) at  _start_ :36