http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48954
--- Comment #2 from Jan Hubicka <hubicka at gcc dot gnu.org> 2011-06-04 13:11:40 UTC --- Hmm, I don't really get the uninitialized access, instead I now get an ice: lto1: internal compiler error: vector VEC(cgraph_node_ptr,base) index domain error, in lto_cgraph_encoder_deref at lto-cgraph.c:143 It comes from: #1 0x00000000009afb79 in vec_assert_fail (op=0xf1f0a8 "index", struct_name=0xd46859 "VEC(cgraph_node_ptr,base)", file=Unhandled dwarf expression opcode 0xf3 ) at ../../gcc/vec.c:516 #2 0x00000000006d1f90 in VEC_cgraph_node_ptr_base_index (file_=Unhandled dwarf expression opcode 0xf3 ) at ../../gcc/cgraph.h:253 #3 0x00000000006ceda0 in lto_cgraph_encoder_deref (encoder=Unhandled dwarf expression opcode 0xf3 ) at ../../gcc/lto-cgraph.c:141 #4 0x0000000001420770 in ?? () #5 0x000000000069557a in ipa_prop_read_jump_functions () at ../../gcc/ipa-prop.c:2928 #6 0x000000000071f48b in ipa_read_summaries_1 (pass=0x1242ec0) at ../../gcc/passes.c:2144 So jump functions stream is corrupted somehow.