hotspot appears to be looping in optimization code:
Core file at:
/net/cores.central/cores/dir4/65148856/101706/pkgcoredir

The stack trace of the thread that caused SIGSEGV:
--------------------------------------------------
fed146d8 void CE_Eliminator::block_do(BlockBegin*) (f1af44, fc56f868, fc56f8d0, f1b4d4, ff010000, 5f5f)
 fed146b8 void BlockBegin::iterate_preorder(boolArray&,BlockClosure*) (f18c2c, fc56f868, fc56f8d0, 0, ff010000, ff017444) + ac
...
<truncated for clarity>
....

 fed145fc void BlockBegin::iterate_preorder(BlockClosure*) (13f874c, fc56f8d0, ff010000, 0, ff021600, ff0175f4) + c8
 fed14500 void Optimizer::eliminate_conditional_expressions() (fc56f93c, c9c580, 0, ffffffff, 7084a0, ffffffff) + 2c
 fed1448c void IR::optimize() (c9c580, fc56fc34, 7084a0, ffffffff, ff010000, 0) + 10
 fed01488 void Compilation::build_hir() (fc56fc34, ff010000, 2800, bc, ff010000, fefd8875) + d0
 fed00170 int Compilation::compile_java_method(CodeOffsets*) (fc56fc34, fc56fbbc, 10000, 0, ff010000, 0) + 70
 fecfff74 Compilation::Compilation(ciEnv*,ciMethod*,int,C1_MacroAssembler*) (fc56fc34, fc56fd54, 7084a0, ffffffff, cfdcc, 3b549c) + 248
 fecffc1c void Compiler::compile_method(ciEnv*,ciScope*,ciMethod*,int,int) (35938, fc56fd54, 0, 7084a0, ffffffff, 0) + 5c
 fecfa3d0 void CompileBroker::invoke_compiler_on_method(CompileTask*) (0, ffffffff, 0, ff021788, ff029650, cfb98) + 5a8
 fecf4fc8 void CompileBroker::compiler_thread_loop() (fefd8722, ff021b6c, 0, 4000, 41b8, fecd9294) + 464
 fecd92bc void JavaThread::run() (cfb98, ffffffe2, ff030d00, ffff8000, 0, 0) + 288
 fef56640 java_start (cfb98, ff310c00, 0, 0, 0, 0) + 134
 ff364c3c _lwp_start (0, 0, 0, 0, 0, 0)