https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62225
--- Comment #2 from Yao Qi <qiyao at gcc dot gnu.org> ---
arm-none-eabi gcc mainline (4.10.0 20140818) and 4.9.2 has this problem too.
The test case is compiled with -mthumb flag.
<1><71>: Abbrev Number: 6 (DW_TAG_subprogram)
<72> DW_AT_external : 1
<72> DW_AT_name : (indirect string, offset: 0x6a): wack
<76> DW_AT_decl_file : 1
<77> DW_AT_decl_line : 13
<78> DW_AT_prototyped : 1
<78> DW_AT_type : <0xc4>
<7c> DW_AT_low_pc : 0x8214
<80> DW_AT_high_pc : 0x44
<84> DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
<86> DW_AT_GNU_all_tail_call_sites: 1
<86> DW_AT_sibling : <0xc4>
<2><8a>: Abbrev Number: 5 (DW_TAG_formal_parameter)
<8b> DW_AT_name : u
<8d> DW_AT_decl_file : 1
<8e> DW_AT_decl_line : 13
<8f> DW_AT_type : <0x25>
<93> DW_AT_location : 6 byte block: 50 93 4 51 93 4 (DW_OP_reg0
(r0); DW_OP_piece: 4; DW_OP_reg1 (r1); DW_OP_piece: 4)
<2><9a>: Abbrev Number: 5 (DW_TAG_formal_parameter)
<9b> DW_AT_name : v
<9d> DW_AT_decl_file : 1
<9e> DW_AT_decl_line : 13
<9f> DW_AT_type : <0x25>
<a3> DW_AT_location : 6 byte block: 52 93 4 53 93 4 (DW_OP_reg2
(r2); DW_OP_piece: 4; DW_OP_reg3 (r3); DW_OP_piece: 4)
<2><aa>: Abbrev Number: 7 (DW_TAG_variable)
<ab> DW_AT_name : l
<ad> DW_AT_decl_file : 1
<ae> DW_AT_decl_line : 15
<af> DW_AT_type : <0x25>
<b3> DW_AT_location : 6 byte block: 54 93 4 55 93 4 (DW_OP_reg4
(r4); DW_OP_piece: 4; DW_OP_reg5 (r5); DW_OP_piece: 4)
<2><ba>: Abbrev Number: 8 (DW_TAG_variable)
<bb> DW_AT_name : r
<bd> DW_AT_decl_file : 1
<be> DW_AT_decl_line : 15
<bf> DW_AT_type : <0x25>
<2><c3>: Abbrev Number: 0
