test/tools/obj2yaml/section-group.test

## Checks that the tool is able to read section groups from ELF.

# RUN: yaml2obj --docnum=1 %s > %t1.o
# RUN: llvm-readobj --elf-section-groups %t1.o | FileCheck %s -check-prefix=OBJ
# RUN: obj2yaml %t1.o | FileCheck %s --check-prefix YAML

# OBJ:      Groups {
# OBJ-NEXT:   Group {
# OBJ-NEXT:     Name: .group
# OBJ-NEXT:     Index: 1
# OBJ-NEXT:     Link: 3
# OBJ-NEXT:     Info: 1
# OBJ-NEXT:     Type: COMDAT (0x1)
# OBJ-NEXT:     Signature: signature
# OBJ-NEXT:     Section(s) in group [
# OBJ-NEXT:       .rodata (2)
# OBJ-NEXT:     ]
# OBJ-NEXT:   }
# OBJ-NEXT: }

# YAML: - Name: .group
# YAML:   Type: SHT_GROUP
# YAML:   Link: .symtab
# YAML:   Info: signature
# YAML:   Members:
# YAML:     - SectionOrType: GRP_COMDAT
# YAML:     - SectionOrType: .rodata

--- !ELF
FileHeader:
  Class:   ELFCLASS64
  Data:    ELFDATA2LSB
  Type:    ET_REL
  Machine: EM_X86_64
Sections:
  - Name: .group
    Type: SHT_GROUP
    Link: .symtab
    Info: signature
    Members:
      - SectionOrType: GRP_COMDAT
      - SectionOrType: .rodata
  - Name: .rodata
    Type: SHT_PROGBITS
Symbols:
  - Name:    signature
    Type:    STT_OBJECT
    Section: .rodata

## Check obj2yaml report an error when sh_info field of
## group section contains invalid (too large) signature symbol index.

# RUN: yaml2obj --docnum=2 %s > %t2.o
# RUN: not obj2yaml %t2.o 2>&1 | FileCheck %s --check-prefix ERR

--- !ELF
FileHeader:
  Class:   ELFCLASS64
  Data:    ELFDATA2LSB
  Type:    ET_REL
  Machine: EM_X86_64
Sections:
  - Name: .group
    Type: SHT_GROUP
    Link: .symtab
    Info: 0xFF
    Members:
      - SectionOrType: GRP_COMDAT

# ERR: Error reading file: {{.*}}2.o: unable to get symbol from section [index 2]: invalid symbol index (255)