# REQUIRES: x86-registered-target
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
# RUN: llvm-symbolizer 0x0 0x2 0x3 0x4 --obj=%t.o | FileCheck %s
# This test makes sure we don't attempt to access out of the line table boundaries
# if the last range is empty.
# Produced from the following program:
# int func(int a) {
# return 1 + a;
# }
# compiled with clang -O3 -g -S
# Edited by adding a redundant, empty last range.
# The line table (llvm-dwarfdump --debug-line) looks like:
#
# Address Line Column File ISA Discriminator OpIndex Flags
# ------------------ ------ ------ ------ --- ------------- ------- -------------
# 0x0000000000000000 1 0 1 0 0 0 is_stmt
# 0x0000000000000000 2 12 1 0 0 0 is_stmt prologue_end
# 0x0000000000000003 2 3 1 0 0 0
# 0x0000000000000003 3 3 1 0 0 0
# 0x0000000000000004 3 3 1 0 0 0 end_sequence
#
# 0x0 should pick the second line in the table - line 2, col 12
# CHECK: func
# CHECK: /scratch/a.cpp:2:12
# 0x2 does not exist in the table, so we should pick the line with a
# lower address that describes the range - in this case, the second line.
# CHECK: func
# CHECK: /scratch/a.cpp:2:12
# 0x3 also has a sequence of empty ranges, so we should pick the first range after
# skipping the empty ones.
# This also verifies we don't attempt to access outside boundaries.
# CHECK: func
# CHECK: /scratch/a.cpp:3:3
# CHECK: ??
# CHECK: ??:0:0
.text
.file "a.cpp"
.globl _Z4funci # -- Begin function _Z4funci
.p2align 4, 0x90
.type _Z4funci,@function
_Z4funci: # @_Z4funci
.Lfunc_begin0:
.file 1 "/llvm-project" "/scratch/a.cpp"
.loc 1 1 0 # /scratch/a.cpp:1:0
.cfi_startproc
# %bb.0:
#DEBUG_VALUE: func:a <- $edi
# kill: def $edi killed $edi def $rdi
#DEBUG_VALUE: func:a <- $edi
.loc 1 2 12 prologue_end # /scratch/a.cpp:2:12
leal 1(%rdi), %eax
.loc 1 2 3 # /scratch/a.cpp:2:3
.loc 1 3 3 is_stmt 0 # this forms an empty range torgether with the previous.
retq
.Ltmp0:
.Lfunc_end0:
.size _Z4funci, .Lfunc_end0-_Z4funci
.cfi_endproc
# -- End function
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "clang version 7.0.1-6 (tags/RELEASE_701/final)" # string offset=0
.Linfo_string1:
.asciz "/scratch/a.cpp" # string offset=47
.Linfo_string2:
.asciz "/llvm-project" # string offset=97
.Linfo_string3:
.asciz "_Z4funci" # string offset=146
.Linfo_string4:
.asciz "func" # string offset=155
.Linfo_string5:
.asciz "int" # string offset=160
.Linfo_string6:
.asciz "a" # string offset=164
.section .debug_loc,"",@progbits
.Ldebug_loc0:
.quad .Lfunc_begin0-.Lfunc_begin0
.quad .Lfunc_end0-.Lfunc_begin0
.short 1 # Loc expr size
.byte 85 # super-register DW_OP_reg5
.quad 0
.quad 0
.section .debug_abbrev,"",@progbits
.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
.ascii "\264B" # DW_AT_GNU_pubnames
.byte 25 # DW_FORM_flag_present
.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 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 110 # DW_AT_linkage_name
.byte 14 # DW_FORM_strp
.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 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 23 # DW_FORM_sec_offset
.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 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_info,"",@progbits
.Lcu_begin0:
.long 91 # Length of Unit
.short 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0x54 DW_TAG_compile_unit
.long .Linfo_string0 # DW_AT_producer
.short 4 # DW_AT_language
.long .Linfo_string1 # DW_AT_name
.long .Lline_table_start0 # DW_AT_stmt_list
.long .Linfo_string2 # DW_AT_comp_dir
# DW_AT_GNU_pubnames
.quad .Lfunc_begin0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 2 # Abbrev [2] 0x2a:0x2d DW_TAG_subprogram
.quad .Lfunc_begin0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 87
.long .Linfo_string3 # DW_AT_linkage_name
.long .Linfo_string4 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 87 # DW_AT_type
# DW_AT_external
.byte 3 # Abbrev [3] 0x47:0xf DW_TAG_formal_parameter
.long .Ldebug_loc0 # DW_AT_location
.long .Linfo_string6 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 87 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 4 # Abbrev [4] 0x57:0x7 DW_TAG_base_type
.long .Linfo_string5 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.section .debug_macinfo,"",@progbits
.byte 0 # End Of Macro List Mark
.section .debug_pubnames,"",@progbits
.long .LpubNames_end0-.LpubNames_begin0 # Length of Public Names Info
.LpubNames_begin0:
.short 2 # DWARF Version
.long .Lcu_begin0 # Offset of Compilation Unit Info
.long 95 # Compilation Unit Length
.long 42 # DIE offset
.asciz "func" # External Name
.long 0 # End Mark
.LpubNames_end0:
.section .debug_pubtypes,"",@progbits
.long .LpubTypes_end0-.LpubTypes_begin0 # Length of Public Types Info
.LpubTypes_begin0:
.short 2 # DWARF Version
.long .Lcu_begin0 # Offset of Compilation Unit Info
.long 95 # Compilation Unit Length
.long 87 # DIE offset
.asciz "int" # External Name
.long 0 # End Mark
.LpubTypes_end0:
.ident "clang version 7.0.1-6 (tags/RELEASE_701/final)"
.section ".note.GNU-stack","",@progbits
.addrsig
.section .debug_line,"",@progbits
.Lline_table_start0:
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