[Bug c++/54420] New: Segmentation in decl_mangling_context

[lukeocamden at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54420

             Bug #: 54420
           Summary: Segmentation in decl_mangling_context
    Classification: Unclassified
           Product: gcc
           Version: 4.7.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: lukeocam...@gmail.com


Created attachment 28107
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28107
Preprocessed source file

Discovered when compiling llvm+lldb. Preprocessed file attached. Stack trace:

#0  0x000000000058f3b3 in decl_mangling_context (decl=0x2aaaabf38508) at
../.././gcc/cp/mangle.c:759
#1  decl_mangling_context (decl=0x2aaaabf38508) at ../.././gcc/cp/mangle.c:749
#2  0x00000000005963a4 in write_name (decl=0x2aaaabf38508,
ignore_local_scope=ignore_local_scope@entry=0)
    at ../.././gcc/cp/mangle.c:795
#3  0x00000000005931b4 in write_class_enum_type (type=<optimized out>) at
../.././gcc/cp/mangle.c:2424
#4  write_type (type=type@entry=0x2aaaabf4e7e0) at ../.././gcc/cp/mangle.c:1903
#5  0x0000000000596db9 in mangle_special_for_type (type=0x2aaaabf4e7e0,
code=0xd3042e "TV") at ../.././gcc/cp/mangle.c:3445
#6  0x000000000051062e in get_vtable_name (type=0x2aaaabf4e7e0) at
../.././gcc/cp/class.c:709
...