View Compilation Error

0_0_33194278_10272.cpp: In function 'void __tcf_1()':
0_0_33194278_10272.cpp:69:2: error: unrecognizable insn:
 }ac;
  ^
(insn 10 9 11 2 (set (reg:DI 2 cx)
        (plus:DI (symbol_ref:DI ("ac") [flags 0x2] <var_decl 000000000d36f2f8 ac>)
            (reg:DI 87))) GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_tree.h:715 -1
     (expr_list:REG_EQUAL (const:DI (plus:DI (symbol_ref:DI ("ac") [flags 0x2] <var_decl 000000000d36f2f8 ac>)
                (const_int 2240002696 [0x8583ba88])))
        (nil)))
0_0_33194278_10272.cpp:69:2: internal compiler error: in extract_insn, at recog.c:2202
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