digitalmars.D.bugs - [Issue 21153] New: DWARF: DMD emits the mangled name for DW_AT_name
- d-bugmail puremagic.com (181/181) Aug 13 2020 https://issues.dlang.org/show_bug.cgi?id=21153
d-bugmail puremagic.com https://issues.dlang.org/show_bug.cgi?id=21153 Issue ID: 21153 Summary: DWARF: DMD emits the mangled name for DW_AT_name Product: D Version: D2 Hardware: All OS: Linux Status: NEW Severity: trivial Priority: P1 Component: dmd Assignee: nobody puremagic.com Reporter: lucien.perregaux gmail.com Consider the following program: --- module bar; int x = 9; void main(string[] args) { int i = 5; bar(i); } void bar(int i) { i = x; x += i; } --- DMD will emit this: --- .debug_info contents: 0x00000000: Compile Unit: length = 0x000001ee version = 0x0003 abbr_offset = 0x0000 addr_size = 0x08 (next unit at 0x000001f2) 0x0000000b: DW_TAG_compile_unit DW_AT_producer ("Digital Mars D v2.093.0\n") DW_AT_language (DW_LANG_D) DW_AT_name ("src/main.d") DW_AT_comp_dir ("/home/lucien/Documents/Programmation/D/b9800") DW_AT_low_pc (0x0000000000000000) DW_AT_entry_pc (0x0000000000000000) DW_AT_ranges (0x00000000 [0x000000000003f69c, 0x000000000003f6bf) [0x000000000003f6c0, 0x000000000003f6fb) [0x000000000003f6fc, 0x000000000003f720)) DW_AT_stmt_list (0x00000000) 0x00000076: DW_TAG_module DW_AT_name ("bar") 0x0000007b: DW_TAG_base_type DW_AT_name ("int") DW_AT_byte_size (0x04) DW_AT_encoding (DW_ATE_signed) 0x00000082: DW_TAG_variable DW_AT_name ("_D3bar1xi") DW_AT_type (0x0000007b "int") DW_AT_external (0x01) DW_AT_location (DW_OP_const8u 0x0, DW_OP_GNU_push_tls_address) 0x0000009d: DW_TAG_base_type DW_AT_name ("uint long") DW_AT_byte_size (0x04) DW_AT_encoding (DW_ATE_unsigned) 0x000000aa: DW_TAG_base_type DW_AT_name ("char") DW_AT_byte_size (0x01) DW_AT_encoding (DW_ATE_unsigned_char) 0x000000b2: DW_TAG_pointer_type DW_AT_type (0x000000aa "char") 0x000000b7: DW_TAG_structure_type DW_AT_name ("_Array_char") DW_AT_byte_size (0x10) 0x000000c5: DW_TAG_member DW_AT_name ("length") DW_AT_type (0x0000009d "uint long") DW_AT_data_member_location (DW_OP_plus_uconst 0x0) 0x000000d4: DW_TAG_member DW_AT_name ("ptr") DW_AT_type (0x000000b2 "char*") DW_AT_data_member_location (DW_OP_plus_uconst 0x8) 0x000000e0: NULL 0x000000e1: DW_TAG_pointer_type DW_AT_type (0x000000b7 "_Array_char") 0x000000e6: DW_TAG_structure_type DW_AT_name ("_Array_ucent") DW_AT_byte_size (0x10) 0x000000f5: DW_TAG_member DW_AT_name ("length") DW_AT_type (0x0000009d "uint long") DW_AT_data_member_location (DW_OP_plus_uconst 0x0) 0x00000104: DW_TAG_member DW_AT_name ("ptr") DW_AT_type (0x000000e1 "_Array_char*") DW_AT_data_member_location (DW_OP_plus_uconst 0x8) 0x00000110: NULL 0x00000111: DW_TAG_subprogram DW_AT_sibling (0x00000156) DW_AT_name ("D main") DW_AT_MIPS_linkage_name ("_Dmain") DW_AT_decl_file ("src/main.d") DW_AT_decl_line (5) DW_AT_external (0x01) DW_AT_low_pc (0x000000000003f69c) DW_AT_high_pc (0x000000000003f6bf) DW_AT_frame_base (0x00000000: [0x000000000003f69c, 0x000000000003f69d): DW_OP_breg7 RSP+8 [0x000000000003f69d, 0x000000000003f69f): DW_OP_breg7 RSP+16 [0x000000000003f69f, 0x000000000003f6bf): DW_OP_breg6 RBP+16) 0x0000013c: DW_TAG_formal_parameter DW_AT_name ("args") DW_AT_type (0x000000e6 "_Array_ucent") DW_AT_artificial (0x00) DW_AT_location (DW_OP_fbreg -32) 0x0000014a: DW_TAG_variable DW_AT_name ("i") DW_AT_type (0x0000007b "int") DW_AT_artificial (0x00) DW_AT_location (DW_OP_fbreg -40) 0x00000155: NULL 0x00000156: DW_TAG_subprogram DW_AT_sibling (0x00000194) DW_AT_name ("bar.bar") DW_AT_MIPS_linkage_name ("_D3barQeFiZv") DW_AT_decl_file ("src/main.d") DW_AT_decl_line (11) DW_AT_external (0x01) DW_AT_low_pc (0x000000000003f6c0) DW_AT_high_pc (0x000000000003f6fb) DW_AT_frame_base (0x0000004c: [0x000000000003f6c0, 0x000000000003f6c1): DW_OP_breg7 RSP+8 [0x000000000003f6c1, 0x000000000003f6c3): DW_OP_breg7 RSP+16 [0x000000000003f6c3, 0x000000000003f6fb): DW_OP_breg6 RBP+16) 0x00000188: DW_TAG_formal_parameter DW_AT_name ("i") DW_AT_type (0x0000007b "int") DW_AT_artificial (0x00) DW_AT_location (DW_OP_fbreg -24) 0x00000193: NULL 0x00000194: DW_TAG_pointer_type DW_AT_type (0x000000b2 "char*") 0x00000199: DW_TAG_subprogram DW_AT_sibling (0x000001f1) DW_AT_name ("bar._d_cmain!().main") DW_AT_MIPS_linkage_name ("main") DW_AT_decl_file ("/usr/include/dlang/dmd/core/internal/entrypoint.d") DW_AT_decl_line (27) DW_AT_type (0x0000007b "int") DW_AT_external (0x01) DW_AT_low_pc (0x000000000003f6fc) DW_AT_high_pc (0x000000000003f720) DW_AT_frame_base (0x00000098: [0x000000000003f6fc, 0x000000000003f6fd): DW_OP_breg7 RSP+8 [0x000000000003f6fd, 0x000000000003f6ff): DW_OP_breg7 RSP+16 [0x000000000003f6ff, 0x000000000003f720): DW_OP_breg6 RBP+16) 0x000001d4: DW_TAG_formal_parameter DW_AT_name ("argc") DW_AT_type (0x0000007b "int") DW_AT_artificial (0x00) DW_AT_location (DW_OP_fbreg -32) 0x000001e2: DW_TAG_formal_parameter DW_AT_name ("argv") DW_AT_type (0x00000194 "char**") DW_AT_artificial (0x00) DW_AT_location (DW_OP_fbreg -24) 0x000001f0: NULL 0x000001f1: NULL .debug_pubnames contents: length = 0x00000033 version = 0x0002 unit_offset = 0x00000000 unit_size = 0x000001f2 Offset Name 0x00000111 "_Dmain" 0x00000156 "_D3barQeFiZv" 0x00000199 "main" --- `DW_AT_name` should contain the plain variable name, because the mangled name is for the `DW_AT_linkage_name` attribute. In `debug_pubnames`, the names should also be plain. LDC emits correctly these names. --
Aug 13 2020