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llvm-project/llvm/test/Object/invalid.test
George Rimar d3963051c4 [yaml2obj/obj2yaml] - Add a basic support for extended section indexes. 
In some cases a symbol might have section index == SHN_XINDEX.
This is an escape value indicating that the actual section header index
is too large to fit in the containing field.
Then the SHT_SYMTAB_SHNDX section is used. It contains the 32bit values
that stores section indexes.

ELF gABI says that there can be multiple SHT_SYMTAB_SHNDX sections,
i.e. for example one for .symtab and one for .dynsym
(1) https://groups.google.com/forum/#!topic/generic-abi/-XJAV5d8PRg
(2) DT_SYMTAB_SHNDX: http://www.sco.com/developers/gabi/latest/ch5.dynamic.html

In this patch I am only supporting a single SHT_SYMTAB_SHNDX associated
with a .symtab. This is a more or less common case which is used a few tests I saw in LLVM.

I decided not to create the SHT_SYMTAB_SHNDX section as "implicit",
but implement is like a kind of regular section for now.
i.e. tools do not recreate this section or its content, like they do for
symbol table sections, for example. That should allow to write all kind of
possible broken test cases for our needs and keep the output closer to requested.

Differential revision: https://reviews.llvm.org/D65446

llvm-svn: 368272
2019-08-08 09:49:05 +00:00

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## Check that llvm-objdump reports an error when
## .shstrtab has an invalid type.
# RUN: yaml2obj %s --docnum=1 -o %t1
# RUN: not llvm-objdump -s %t1 2>&1 | FileCheck %s --check-prefix=INVALIDERR
# INVALIDERR: error: reading file: Invalid data was encountered while parsing the file
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Sections:
- Name: .shstrtab
Type: SHT_PROGBITS
## Check that llvm-objdump reports an error when
## .shstrtab has an invalid zero-size.
# RUN: yaml2obj %s --docnum=2 -o %t2
# RUN: not llvm-objdump -s %t2 2>&1 | FileCheck %s --check-prefix=INVALIDERR
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Sections:
- Name: .shstrtab
Type: SHT_STRTAB
Size: 0
## Check that llvm-objdump reports an error when .shstrtab has an invalid
## size that goes past the end of the file.
# RUN: not llvm-objdump -s %p/Inputs/invalid-strtab-size.elf 2>&1 \
# RUN: | FileCheck %s --check-prefix=INVALIDERR
## Check that llvm-dwarfdump reports an error during relocation resolution
## when instead of expected SHT_RELA section it locates a section of a different type.
# RUN: yaml2obj %s --docnum=3 -o %t3
# RUN: not llvm-dwarfdump -debug-line %t3 2>&1 | FileCheck --check-prefix=RELA %s
# RELA: LLVM ERROR: Section is not SHT_RELA
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
Sections:
- Name: .debug_line
Type: SHT_PROGBITS
## The exact content does not matter here. We can use any minimal valid debug section
## which is a target for relocation. The idea is to trigger the code that reads the
## relocation's addend during relocation resolution. It should fail if called on
## a non-SHT_RELA section.
Content: 380000000200210000000101FB0E0D00010101010000000100000100676C6F62616C2E63707000000000000009020000000000000000130237000101
- Name: .rela.debug_line
Type: SHT_REL
Info: .debug_line
Relocations:
- Offset: 0x000000000000002E
Type: R_X86_64_64
## Check that llvm-objdump reports an error when it tries to dump section names
## and .shstrtab is not null-terminated.
# RUN: yaml2obj %s --docnum=4 -o %t4
# RUN: not llvm-objdump -s %t4 2>&1 | FileCheck --check-prefix=INVALIDERR %s
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Sections:
- Name: .shstrtab
Type: SHT_STRTAB
Content: "11"
## Check that llvm-objdump reports an error when it tries to dump a symbol name and
## .strtab is not null-terminated.
# RUN: yaml2obj %s --docnum=5 -o %t5
# RUN: not llvm-objdump -syms %t5 2>&1 | FileCheck --check-prefix=NONULL %s
# NONULL: error: {{.*}}: SHT_STRTAB string table section [index 1] is non-null terminated
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Sections:
- Name: .strtab
Type: SHT_STRTAB
Content: "11"
Symbols:
- Name: foo
## Check that llvm-readobj reports an error if .symtab has an invalid sh_entsize.
# RUN: yaml2obj %s --docnum=6 -o %t6
# RUN: not llvm-readobj --symbols %t6 2>&1 | FileCheck --check-prefix=INVALID-SYM-SIZE %s
# INVALID-SYM-SIZE: error: section [index 1] has an invalid sh_entsize: 32
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Sections:
- Name: .symtab
Type: SHT_SYMTAB
EntSize: 32
Symbols:
- Name: foo
## Check that llvm-readobj reports a warning if .dynsym has an invalid sh_entsize.
# RUN: yaml2obj %s --docnum=7 -o %t7
# RUN: llvm-readobj --dyn-symbols %t7 2>&1 | FileCheck --check-prefix=INVALID-DYNSYM-SIZE %s
# INVALID-DYNSYM-SIZE: warning: invalid section size (48) or entity size (32)
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Sections:
- Name: .dynsym
Type: SHT_DYNSYM
EntSize: 32
DynamicSymbols:
- Name: foo
## Check that llvm-readobj reports an error if .symtab has an invalid sh_link value,
## which is greater than number of sections.
# RUN: yaml2obj %s --docnum=8 -o %t8
# RUN: not llvm-readobj --symbols %t8 2>&1 | FileCheck --check-prefix=INVALID-SYMTAB-LINK %s
# INVALID-SYMTAB-LINK: error: invalid section index: 255
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
Sections:
- Name: .symtab
Type: SHT_SYMTAB
Link: 0xFF
## Check that llvm-readobj reports an error when trying to dump sections
## when the e_shentsize field is broken.
# RUN: yaml2obj %s --docnum=9 -o %t9
# RUN: not llvm-readobj -S %t9 2>&1 | FileCheck --check-prefix=INVALID-SH-ENTSIZE %s
# INVALID-SH-ENTSIZE: error: {{.*}}: invalid e_shentsize in ELF header: 1
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
SHEntSize: 1
## Check that llvm-readobj reports an error if .symtab has sh_size
## that is not a multiple of sh_entsize.
# RUN: yaml2obj %s --docnum=10 -o %t10
# RUN: not llvm-readobj --symbols %t10 2>&1 | FileCheck --check-prefix=INVALID-SYMTAB-SIZE %s
# INVALID-SYMTAB-SIZE: error: section [index 1] has an invalid sh_size (1) which is not a multiple of its sh_entsize (24)
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Sections:
- Name: .symtab
Type: SHT_SYMTAB
Size: 1
## Test that llvm-readobj reports an error if SHT_SYMTAB_SHNDX section has
## invalid sh_size which should be:
## sizeof(.symtab_shndx) = (sizeof(.symtab) / entsize(.symtab)) * entsize(.symtab_shndx)
# RUN: yaml2obj %s --docnum=11 -o %t11
# RUN: not llvm-readobj --symbols %t11 2>&1 | FileCheck --check-prefix=INVALID-XINDEX-SIZE %s
# INVALID-XINDEX-SIZE: error: {{.*}}: SHT_SYMTAB_SHNDX section has sh_size (24) which is not equal to the number of symbols (2)
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Sections:
- Name: .symtab_shndx
Type: SHT_SYMTAB_SHNDX
Entries: [ 0, 1 ]
Link: .symtab
## Check that llvm-readobj reports an error if the e_phentsize field is broken.
# RUN: not llvm-readobj --program-headers %p/Inputs/invalid-e_shnum.elf 2>&1 | \
# RUN: FileCheck --check-prefix=INVALID-PH-ENTSIZE %s
# INVALID-PH-ENTSIZE: error: invalid e_phentsize: 12336
## Check that llvm-readobj reports an error when we have no SHT_SYMTAB_SHNDX section,
## but have a symbol referencing it.
# RUN: not llvm-readobj --symbols %p/Inputs/invalid-ext-symtab-index.elf-x86-64 2>&1 | \
# RUN: FileCheck --check-prefix=INVALID-EXT-SYMTAB-INDEX %s
# INVALID-EXT-SYMTAB-INDEX: error: extended symbol index (0) is past the end of the SHT_SYMTAB_SHNDX section of size 0
## Check that llvm-readobj reports an error if a relocation section
## has a broken sh_offset (past the end of the file).
# RUN: yaml2obj %s --docnum=12 -o %t12
# RUN: yaml2obj %s --docnum=13 -o %t13
# RUN: not llvm-readobj -r %t12 2>&1 | FileCheck --check-prefix=INVALID-RELOC-SH-OFFSET %s
# RUN: not llvm-readobj -r %t13 2>&1 | FileCheck --check-prefix=INVALID-RELOC-SH-OFFSET %s
# INVALID-RELOC-SH-OFFSET: error: section [index 1] has a sh_offset (0x10000) + sh_size (0x0) that cannot be represented
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_386
Sections:
- Name: .rel
Type: SHT_REL
ShOffset: 0x10000
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
Sections:
- Name: .rela
Type: SHT_RELA
ShOffset: 0x10000
## Check that llvm-objdump reports an error when .shstrtab has a broken sh_offset
## so large that sh_offset + sh_size overflows the platform address size type.
# RUN: yaml2obj %s --docnum=14 -o %t14
# RUN: not llvm-readobj --symbols %t14 2>&1 | FileCheck --check-prefix=INVALID-SECTION-SIZE2 %s
# INVALID-SECTION-SIZE2: error: section [index 1] has a sh_offset (0xffffffff) + sh_size (0x27) that cannot be represented
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_386
Sections:
- Name: .shstrtab
Type: SHT_STRTAB
ShOffset: 0xFFFFFFFF
## Check that llvm-readobj reports an error when trying to dump sections
## when the e_shnum field is broken (is greater than the actual number of sections).
# RUN: yaml2obj %s --docnum=15 -o %t15
# RUN: not llvm-readobj -S %t15 2>&1 | FileCheck --check-prefix=INVALID-SECTION-NUM %s
# INVALID-SECTION-NUM: error: {{.*}}: section table goes past the end of file
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
SHNum: 0xFF
## Check that llvm-readobj reports an error if a relocation contains an
## incorrect (too large) symbol index.
# RUN: yaml2obj %s --docnum=16 -o %t16
# RUN: not llvm-readobj -r %t16 2>&1 | FileCheck --check-prefix=INVALID-REL-SYM %s
# INVALID-REL-SYM: error: unable to access section [index 2] data at 0x18000180: offset goes past the end of file
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
Sections:
- Name: .rela.text
Type: SHT_RELA
Info: 0
Relocations:
- Offset: 0x0
Type: R_X86_64_64
Symbol: 0xFFFFFF
## Check llvm-readobj does not crash on a truncated ELF.
## Create a truncated ELF object with ELFCLASSNONE class using echo.
## 0x7f, 'E', 'L', 'F', ELFCLASS64(2), ELFDATA2LSB(1),
## EV_CURRENT(1), ELFOSABI_LINUX(3), <padding zero bytes>, ET_REL(1), EM_NONE(0)
# RUN: echo -e -n "\x7f\x45\x4c\x46\x02\x01\x01\x03\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00" > %t11
# RUN: not llvm-readobj -r %t11 2>&1 | FileCheck --check-prefix=INVALID-BUFFER %s
# INVALID-BUFFER: error: {{.*}}': invalid buffer: the size (18) is smaller than an ELF header (64)
# RUN: not llvm-readobj %p/Inputs/invalid-coff-header-too-small 2>&1 | FileCheck --check-prefix=COFF-HEADER %s
# COFF-HEADER: The file was not recognized as a valid object file
## Check that llvm-readobj reports an error if section name offset
## overflows the section name string table.
# RUN: yaml2obj %s --docnum=17 -o %t17
# RUN: not llvm-readobj --sections %t17 2>&1 | FileCheck -DFILE=%t17 --check-prefix=BROKEN-SECNAME %s
## BROKEN-SECNAME: error: '[[FILE]]': a section [index 1] has an invalid sh_name (0x1) offset which goes past the end of the section name string table
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
Sections:
- Name: .shstrtab
Type: SHT_STRTAB
Size: 1
## Check that llvm-readobj reports an error if a section has a broken offset
## that goes past the end of the file.
# RUN: yaml2obj %s --docnum=18 -o %t18
# RUN: not llvm-readobj --sections --section-data %t18 2>&1 \
# RUN: | FileCheck --check-prefix=BROKEN-SECSHOFFSET %s
# BROKEN-SECSHOFFSET: error: section [index 1] has a sh_offset (0xffff0000) + sh_size (0x0) that cannot be represented
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
Sections:
- Name: .foo
Type: SHT_PROGBITS
ShOffset: 0xFFFF0000
## Check that llvm-readobj reports an error if symbol name
## offset goes past the end of the symbol string table.
# RUN: yaml2obj %s --docnum=19 -o %t19
# RUN: not llvm-readobj --symbols %t19 2>&1 | FileCheck --check-prefix=INVALID-SYM-NAME %s
# INVALID-SYM-NAME: error: Invalid data was encountered while parsing the file
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
Sections:
- Name: .strtab
Type: SHT_STRTAB
Size: 1
Symbols:
- Name: foo
## Version index in .gnu.version overflows the version map.
## Check llvm-readobj reports it.
# RUN: yaml2obj %s --docnum=20 -o %t20
# RUN: not llvm-readobj -dt %t20 2>&1 | FileCheck --check-prefix=INVALID-VERSION %s
# INVALID-VERSION: error: Invalid version entry
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Sections:
- Name: .gnu.version
Type: SHT_GNU_versym
Entries: [ 0xFF ]
DynamicSymbols:
- Name: foo
## ELF header contains e_phentsize field with a value != sizeof(Elf_Phdr).
## Check llvm-readobj reports it.
# RUN: not llvm-readobj -l %p/Inputs/corrupt-invalid-phentsize.elf.x86-64 2>&1 \
# RUN: | FileCheck --check-prefix=PHENTSIZE %s
# PHENTSIZE: error: invalid e_phentsize: 57
## The dynamic table contains DT_STRTAB with a value that is not in any loadable segment.
## Check llvm-readobj reports it.
# RUN: yaml2obj %s --docnum=21 -o %t21
# RUN: llvm-readobj --dynamic-table %t21 2>&1 | FileCheck --check-prefix=INVALID-DTSTRTAB %s
# INVALID-DTSTRTAB: warning: Unable to parse DT_STRTAB: virtual address is not in any segment: 0xffff0000
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Sections:
- Name: .dynamic
Type: SHT_DYNAMIC
Address: 0x1000
Entries:
- Tag: DT_STRTAB
Value: 0xFFFF0000
- Tag: DT_NULL
Value: 0x0
ProgramHeaders:
- Type: PT_LOAD
VAddr: 0x1000
Sections:
- Section: .dynamic
## Check that llvm-readobj reports a warning when a dynamic relocation section
## has sh_entsize field with size != sizeof(Elf_Rela).
# RUN: llvm-readobj --dyn-relocations \
# RUN: %p/Inputs/corrupt-invalid-relocation-size.elf.x86-64 2>&1 \
# RUN: | FileCheck --check-prefix=RELOC-BROKEN-ENTSIZE %s
# RELOC-BROKEN-ENTSIZE: warning: invalid section size (24) or entity size (25)
## Check that llvm-readobj reports a warning when .dynamic section has an invalid
## size, which isn't a multiple of the dynamic entry size.
# RUN: yaml2obj %s --docnum=22 -o %t22
# RUN: llvm-readobj --dyn-relocations %t22 2>&1 | FileCheck --check-prefix=DYN-TABLE-SIZE %s
# DYN-TABLE-SIZE: warning: invalid section size (1) or entity size (16)
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Sections:
- Name: .dynamic
Type: SHT_DYNAMIC
Content: "00"
## PT_DYNAMIC's p_offset field is so large that p_offset + p_filesz is larger
## than the object size. Check llvm-readobj reports it.
# RUN: yaml2obj %s --docnum=23 -o %t23
# RUN: not llvm-readobj --dyn-relocations %t23 2>&1 | FileCheck --check-prefix=DYN-TABLE-PHDR %s
# DYN-TABLE-PHDR: error: PT_DYNAMIC segment offset + size exceeds the size of the file
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Sections:
- Name: .dynamic
Type: SHT_DYNAMIC
Entries:
- Tag: DT_NULL
Value: 0
ProgramHeaders:
- Type: PT_DYNAMIC
Offset: 0xffff0000
Sections:
- Section: .dynamic
## PT_DYNAMIC's p_filesz field is so large that p_offset + p_filesz is larger
## than the object size. Check llvm-readobj reports it.
# RUN: yaml2obj %s --docnum=24 -o %t24
# RUN: not llvm-readobj --dyn-relocations %t24 2>&1 \
# RUN: | FileCheck --check-prefix=DYN-TABLE-PHDR %s
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
Sections:
- Name: .dynamic
Type: SHT_DYNAMIC
Entries:
- Tag: DT_NULL
Value: 0
ProgramHeaders:
- Type: PT_DYNAMIC
FileSize: 0xffff0000
Sections:
- Section: .dynamic
# RUN: yaml2obj --docnum=25 %s -o %t25
# RUN: not obj2yaml 2>&1 %t25 | FileCheck %s -DFILE=%t25 --check-prefix=INVALID-SHSTRNDX
# INVALID-SHSTRNDX: Error reading file: [[FILE]]: section header string table index 255 does not exist
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
SHStrNdx: 0xFF
Sections:
- Name: .foo
Type: SHT_PROGBITS
## We report an error if the number of sections stored in sh_size
## is greater than UINT64_MAX / sizeof(Elf_Shdr) == 288230376151711743.
## Here we check that do not crash on a border value.
# RUN: yaml2obj --docnum=26 %s -o %t26
# RUN: not llvm-readobj -h %t26 2>&1 | FileCheck -DFILE=%t26 --check-prefix=INVALID-SEC-NUM1 %s
# INVALID-SEC-NUM1: error: '[[FILE]]': invalid section header table offset (e_shoff = 0x40) or invalid number of sections specified in the first section header's sh_size field (0x3ffffffffffffff)
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
SHNum: 0x0
Sections:
- Type: SHT_NULL
Size: 288230376151711743
## See above, but now we test the UINT64_MAX / sizeof(Elf_Shdr) value.
## The error is slightly different in this case.
# RUN: yaml2obj --docnum=27 %s -o %t27
# RUN: not llvm-readobj -h %t27 2>&1 | FileCheck -DFILE=%t27 --check-prefix=INVALID-SEC-NUM2 %s
# INVALID-SEC-NUM2: error: '[[FILE]]': invalid number of sections specified in the NULL section's sh_size field (288230376151711744)
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
SHNum: 0x0
Sections:
- Type: SHT_NULL
Size: 288230376151711744
## Check the case when SHOffset is too large. SHOffset + sizeof(Elf_Shdr) overflows the uint64 type.
# RUN: yaml2obj --docnum=28 %s -o %t28
# RUN: not llvm-readobj -h %t28 2>&1 | FileCheck -DFILE=%t28 --check-prefix=INVALID-SEC-NUM3 %s
# INVALID-SEC-NUM3: error: '[[FILE]]': section header table goes past the end of the file: e_shoff = 0xffffffffffffffff
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
SHOffset: 0xffffffffffffffff
## Check that llvm-objdump reports an error when it tries to dump a
## symbol name and .strtab is empty.
# RUN: yaml2obj %s --docnum=29 -o %t29
# RUN: not llvm-objdump -syms %t29 2>&1 | FileCheck -DFILE=%t29 --check-prefix=STRTAB-EMPTY2 %s
# STRTAB-EMPTY2: error: '[[FILE]]': SHT_STRTAB string table section [index 1] is empty
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Machine: EM_X86_64
Sections:
- Name: .strtab
Type: SHT_STRTAB
Content: ""
Symbols:
- Name: foo
## Check that we report an error if SHT_GNU_versym has invalid
## sh_entsize value (3 instead of 2) when trying to access the entries.
# RUN: yaml2obj %s --docnum=30 -o %t30
# RUN: not llvm-readobj -V %t30 2>&1 | FileCheck --check-prefix=INVALID-VER-SHENTSIZE %s
# INVALID-VER-SHENTSIZE: error: section [index 1] has invalid sh_entsize: expected 2, but got 3
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
OSABI: ELFOSABI_FREEBSD
Type: ET_DYN
Machine: EM_X86_64
Sections:
- Name: .gnu.version
Type: SHT_GNU_versym
EntSize: 0x0000000000000003
Entries: [ ]
## Needed to trigger creation of .dynsym.
DynamicSymbols:
- Name: foo
Binding: STB_GLOBAL
## Check the case when e_shstrndx == SHN_XINDEX, but null section's sh_link contains
## the index of a section header string table that is larger than the number of the sections.
# RUN: yaml2obj --docnum=31 %s -o %t31
# RUN: not llvm-objcopy %t31 2>&1 | FileCheck %s -DFILE=%t31 --check-prefix=INVALID-SHSTRTAB-INDEX
# INVALID-SHSTRTAB-INDEX: error: section header string table index 255 does not exist
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_X86_64
## SHN_XINDEX == 0xffff.
SHStrNdx: 0xffff
Sections:
- Type: SHT_NULL
Link: 0xff
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