# RUN: llvm-mc -triple x86_64-unknown-linux %s -filetype=obj -o %t.o
# RUN: not llvm-dwarfdump -verify %t.o | FileCheck --check-prefix=VERIFY %s
# Check that the verifier correctly diagnoses various error conditions with
# the usage of string indices/offsets and string offsets tables.
.section .debug_line_str,"MS",@progbits,1
str_comp_dir:
.asciz "llvm/test/tools/llvm-dwarfdump/X86"
.section .debug_str,"MS",@progbits,1
str_producer:
.asciz "Handmade DWARF producer"
.section .debug_str_offsets,"",@progbits
# The string offsets table
.long .debug_str_offsets_segment0_end-.debug_str_offsets_base0+4
.short 5 # DWARF version
.short 0 # Padding
.debug_str_offsets_base0:
.long str_producer
.long 1000 # Invalid string address.
.debug_str_offsets_segment0_end:
# A simple abbrev section with a basic compile unit DIE.
.section .debug_abbrev,"",@progbits
.byte 0x01 # Abbrev code
.byte 0x11 # DW_TAG_compile_unit
.byte 0x00 # DW_CHILDREN_no
.byte 0x25 # DW_AT_producer
.byte 0x1a # DW_FORM_strx
.byte 0x1b # DW_AT_comp_dir
.byte 0x1f # DW_FORM_line_strp
.byte 0x72 # DW_AT_str_offsets_base
.byte 0x17 # DW_FORM_sec_offset
.byte 0x00 # EOM(1)
.byte 0x00 # EOM(2)
.byte 0x00 # EOM(3)
.section .debug_info,"",@progbits
# The first unit's CU DIE has an invalid DW_AT_str_offsets_base which
# renders any string index unresolvable.
# DWARF v5 CU header.
.long CU1_5_end-CU1_5_version # Length of Unit
CU1_5_version:
.short 5 # DWARF version number
.byte 1 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev # Offset Into Abbrev. Section
# The compile-unit DIE, which has DW_AT_producer and DW_AT_str_offsets.
.byte 1 # Abbreviation code
.byte 0 # Index of string for DW_AT_producer.
.long str_comp_dir # Offset of debug line string for DW_AT_comp_dir
.long 1000 # Bad value for DW_AT_str_offsets_base
.byte 0 # NULL
CU1_5_end:
# The second unit's CU DIE uses an invalid string index.
# DWARF v5 CU header
.long CU2_5_end-CU2_5_version # Length of Unit
CU2_5_version:
.short 5 # DWARF version number
.byte 1 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev # Offset Into Abbrev. Section
# The compile-unit DIE, which has DW_AT_producer and DW_AT_str_offsets.
.byte 1 # Abbreviation code
.byte 100 # Invalid string index
.long str_comp_dir # Offset of debug line string for DW_AT_comp_dir
.long .debug_str_offsets_base0
.byte 0 # NULL
CU2_5_end:
# The third unit's CU DIE uses a valid string index but the entry in the
# string offsets table is invalid.
# DWARF v5 CU header
.long CU3_5_end-CU3_5_version # Length of Unit
CU3_5_version:
.short 5 # DWARF version number
.byte 1 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev # Offset Into Abbrev. Section
# The compile-unit DIE, which has DW_AT_producer and DW_AT_str_offsets.
.byte 1 # Abbreviation code
.byte 1 # Index of string for DW_AT_producer.
.long str_comp_dir # Offset of debug line string for DW_AT_comp_dir
.long .debug_str_offsets_base0
.byte 0 # NULL
CU3_5_end:
# The fourth unit's CU DIE has an invalid offset for the debug line string.
# DWARF v5 CU header
.long CU4_5_end-CU4_5_version # Length of Unit
CU4_5_version:
.short 5 # DWARF version number
.byte 1 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev # Offset Into Abbrev. Section
# The compile-unit DIE, which has DW_AT_producer and DW_AT_str_offsets.
.byte 1 # Abbreviation code
.byte 0 # Index of string for DW_AT_producer.
.long 99999 # Invalid offset of debug line string for DW_AT_comp_dir
.long .debug_str_offsets_base0
.byte 0 # NULL
CU4_5_end:
# VERIFY-DAG: error: DW_FORM_strx used without a valid string offsets table:
# VERIFY-DAG: error: DW_FORM_strx uses index 100, which is too large:
# VERIFY-DAG: error: DW_FORM_strx uses index 1, but the referenced string offset
# VERIFY-DAG-SAME: is beyond .debug_str bounds:
# VERIFY-DAG: error: DW_FORM_line_strp offset 99999 is beyond .debug_line_str bounds
Codebase Browser
llvm