# This test ensures that dwarfdump doesn't crash for malformed DWARF where a
# DIE references itself.
#
# Source:
# void f();
# __attribute__((always_inline)) void g() {
# f();
# }
# void h() {
# g();
# };
#
# Compile with:
# clang inlined.c -S -g -o inlined.s
#
# RUN: llvm-mc %s -filetype obj -triple x86_64-apple-darwin -o - \
# RUN: | llvm-dwarfdump -debug-info - \
# RUN: | FileCheck %s
# CHECK: 0x0000005a: DW_TAG_inlined_subroutine
# CHECK-NEXT: DW_AT_abstract_origin (0x0000005a)
.section __TEXT,__text,regular,pure_instructions
.macosx_version_min 10, 13
.globl _g ## -- Begin function g
.p2align 4, 0x90
_g: ## @g
Lfunc_begin0:
.file 1 "inlined.c"
.loc 1 2 0 ## inlined.c:2:0
.cfi_startproc
## %bb.0: ## %entry
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
Ltmp0:
.loc 1 3 3 prologue_end ## inlined.c:3:3
movb $0, %al
callq _f
.loc 1 4 1 ## inlined.c:4:1
popq %rbp
retq
Ltmp1:
Lfunc_end0:
.cfi_endproc
## -- End function
.globl _h ## -- Begin function h
.p2align 4, 0x90
_h: ## @h
Lfunc_begin1:
.loc 1 5 0 ## inlined.c:5:0
.cfi_startproc
## %bb.0: ## %entry
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
Ltmp2:
.loc 1 3 3 prologue_end ## inlined.c:3:3
movb $0, %al
callq _f
Ltmp3:
.loc 1 7 1 ## inlined.c:7:1
popq %rbp
retq
Ltmp4:
Lfunc_end1:
.cfi_endproc
## -- End function
.section __DWARF,__debug_str,regular,debug
Linfo_string:
.asciz "clang version 7.0.0 " ## string offset=0
.asciz "inlined.c" ## string offset=21
.asciz "/private/tmp" ## string offset=31
.asciz "g" ## string offset=44
.asciz "h" ## string offset=46
.section __DWARF,__debug_abbrev,regular,debug
Lsection_abbrev:
.byte 1 ## Abbreviation Code
.byte 17 ## DW_TAG_compile_unit
.byte 1 ## DW_CHILDREN_yes
.byte 37 ## DW_AT_producer
.byte 14 ## DW_FORM_strp
.byte 19 ## DW_AT_language
.byte 5 ## DW_FORM_data2
.byte 3 ## DW_AT_name
.byte 14 ## DW_FORM_strp
.byte 16 ## DW_AT_stmt_list
.byte 23 ## DW_FORM_sec_offset
.byte 27 ## DW_AT_comp_dir
.byte 14 ## DW_FORM_strp
.byte 17 ## DW_AT_low_pc
.byte 1 ## DW_FORM_addr
.byte 18 ## DW_AT_high_pc
.byte 6 ## DW_FORM_data4
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 2 ## Abbreviation Code
.byte 46 ## DW_TAG_subprogram
.byte 0 ## DW_CHILDREN_no
.byte 17 ## DW_AT_low_pc
.byte 1 ## DW_FORM_addr
.byte 18 ## DW_AT_high_pc
.byte 6 ## DW_FORM_data4
.byte 64 ## DW_AT_frame_base
.byte 24 ## DW_FORM_exprloc
.byte 49 ## DW_AT_abstract_origin
.byte 19 ## DW_FORM_ref4
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 3 ## Abbreviation Code
.byte 46 ## DW_TAG_subprogram
.byte 0 ## DW_CHILDREN_no
.byte 3 ## DW_AT_name
.byte 14 ## DW_FORM_strp
.byte 58 ## DW_AT_decl_file
.byte 11 ## DW_FORM_data1
.byte 59 ## DW_AT_decl_line
.byte 11 ## DW_FORM_data1
.byte 63 ## DW_AT_external
.byte 25 ## DW_FORM_flag_present
.byte 32 ## DW_AT_inline
.byte 11 ## DW_FORM_data1
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 4 ## Abbreviation Code
.byte 46 ## DW_TAG_subprogram
.byte 1 ## DW_CHILDREN_yes
.byte 17 ## DW_AT_low_pc
.byte 1 ## DW_FORM_addr
.byte 18 ## DW_AT_high_pc
.byte 6 ## DW_FORM_data4
.byte 64 ## DW_AT_frame_base
.byte 24 ## DW_FORM_exprloc
.byte 3 ## DW_AT_name
.byte 14 ## DW_FORM_strp
.byte 58 ## DW_AT_decl_file
.byte 11 ## DW_FORM_data1
.byte 59 ## DW_AT_decl_line
.byte 11 ## DW_FORM_data1
.byte 63 ## DW_AT_external
.byte 25 ## DW_FORM_flag_present
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 5 ## Abbreviation Code
.byte 29 ## DW_TAG_inlined_subroutine
.byte 0 ## DW_CHILDREN_no
.byte 49 ## DW_AT_abstract_origin
.byte 19 ## DW_FORM_ref4
.byte 17 ## DW_AT_low_pc
.byte 1 ## DW_FORM_addr
.byte 18 ## DW_AT_high_pc
.byte 6 ## DW_FORM_data4
.byte 88 ## DW_AT_call_file
.byte 11 ## DW_FORM_data1
.byte 89 ## DW_AT_call_line
.byte 11 ## DW_FORM_data1
.byte 0 ## EOM(1)
.byte 0 ## EOM(2)
.byte 0 ## EOM(3)
.section __DWARF,__debug_info,regular,debug
Lsection_info:
Lcu_begin0:
.long 107 ## Length of Unit
.short 4 ## DWARF version number
Lset0 = Lsection_abbrev-Lsection_abbrev ## Offset Into Abbrev. Section
.long Lset0
.byte 8 ## Address Size (in bytes)
.byte 1 ## Abbrev [1] 0xb:0x64 DW_TAG_compile_unit
.long 0 ## DW_AT_producer
.short 12 ## DW_AT_language
.long 21 ## DW_AT_name
Lset1 = Lline_table_start0-Lsection_line ## DW_AT_stmt_list
.long Lset1
.long 31 ## DW_AT_comp_dir
.quad Lfunc_begin0 ## DW_AT_low_pc
Lset2 = Lfunc_end1-Lfunc_begin0 ## DW_AT_high_pc
.long Lset2
.byte 2 ## Abbrev [2] 0x2a:0x13 DW_TAG_subprogram
.quad Lfunc_begin0 ## DW_AT_low_pc
Lset3 = Lfunc_end0-Lfunc_begin0 ## DW_AT_high_pc
.long Lset3
.byte 1 ## DW_AT_frame_base
.byte 86
.long 61 ## DW_AT_abstract_origin
.byte 3 ## Abbrev [3] 0x3d:0x8 DW_TAG_subprogram
.long 44 ## DW_AT_name
.byte 1 ## DW_AT_decl_file
.byte 2 ## DW_AT_decl_line
## DW_AT_external
.byte 1 ## DW_AT_inline
.byte 4 ## Abbrev [4] 0x45:0x29 DW_TAG_subprogram
.quad Lfunc_begin1 ## DW_AT_low_pc
Lset4 = Lfunc_end1-Lfunc_begin1 ## DW_AT_high_pc
.long Lset4
.byte 1 ## DW_AT_frame_base
.byte 86
.long 46 ## DW_AT_name
.byte 1 ## DW_AT_decl_file
.byte 5 ## DW_AT_decl_line
## DW_AT_external
.byte 5 ## Abbrev [5] 0x5a:0x13 DW_TAG_inlined_subroutine
.long 90 ## DW_AT_abstract_origin <- We modified the value so the DIE references itself.
.quad Ltmp2 ## DW_AT_low_pc
Lset5 = Ltmp3-Ltmp2 ## DW_AT_high_pc
.long Lset5
.byte 1 ## DW_AT_call_file
.byte 6 ## DW_AT_call_line
.byte 0 ## End Of Children Mark
.byte 0 ## End Of Children Mark
.section __DWARF,__debug_ranges,regular,debug
Ldebug_range:
.section __DWARF,__debug_macinfo,regular,debug
Ldebug_macinfo:
Lcu_macro_begin0:
.byte 0 ## End Of Macro List Mark
.section __DWARF,__apple_names,regular,debug
Lnames_begin:
.long 1212240712 ## Header Magic
.short 1 ## Header Version
.short 0 ## Header Hash Function
.long 2 ## Header Bucket Count
.long 2 ## Header Hash Count
.long 12 ## Header Data Length
.long 0 ## HeaderData Die Offset Base
.long 1 ## HeaderData Atom Count
.short 1 ## DW_ATOM_die_offset
.short 6 ## DW_FORM_data4
.long 0 ## Bucket 0
.long 1 ## Bucket 1
.long 177676 ## Hash in Bucket 0
.long 177677 ## Hash in Bucket 1
.long LNames0-Lnames_begin ## Offset in Bucket 0
.long LNames1-Lnames_begin ## Offset in Bucket 1
LNames0:
.long 44 ## g
.long 2 ## Num DIEs
.long 42
.long 90
.long 0
LNames1:
.long 46 ## h
.long 1 ## Num DIEs
.long 69
.long 0
.section __DWARF,__apple_objc,regular,debug
Lobjc_begin:
.long 1212240712 ## Header Magic
.short 1 ## Header Version
.short 0 ## Header Hash Function
.long 1 ## Header Bucket Count
.long 0 ## Header Hash Count
.long 12 ## Header Data Length
.long 0 ## HeaderData Die Offset Base
.long 1 ## HeaderData Atom Count
.short 1 ## DW_ATOM_die_offset
.short 6 ## DW_FORM_data4
.long -1 ## Bucket 0
.section __DWARF,__apple_namespac,regular,debug
Lnamespac_begin:
.long 1212240712 ## Header Magic
.short 1 ## Header Version
.short 0 ## Header Hash Function
.long 1 ## Header Bucket Count
.long 0 ## Header Hash Count
.long 12 ## Header Data Length
.long 0 ## HeaderData Die Offset Base
.long 1 ## HeaderData Atom Count
.short 1 ## DW_ATOM_die_offset
.short 6 ## DW_FORM_data4
.long -1 ## Bucket 0
.section __DWARF,__apple_types,regular,debug
Ltypes_begin:
.long 1212240712 ## Header Magic
.short 1 ## Header Version
.short 0 ## Header Hash Function
.long 1 ## Header Bucket Count
.long 0 ## Header Hash Count
.long 20 ## Header Data Length
.long 0 ## HeaderData Die Offset Base
.long 3 ## HeaderData Atom Count
.short 1 ## DW_ATOM_die_offset
.short 6 ## DW_FORM_data4
.short 3 ## DW_ATOM_die_tag
.short 5 ## DW_FORM_data2
.short 4 ## DW_ATOM_type_flags
.short 11 ## DW_FORM_data1
.long -1 ## Bucket 0
.subsections_via_symbols
.section __DWARF,__debug_line,regular,debug
Lsection_line:
Lline_table_start0:
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