# This tests that comdat undef symbol is overridden by a global symbol.
# comdat1.s
#------------------------
# .section .foo,"axG",@progbits,g1,comdat
# word g1
#
#comdat2.s << \!
#-----------------
#    .global g1
#    .section .foo,"axG",@progbits,g1,comdat
#g1:
#        nop
#
#global-g1.c
#-----------
#int g1=10;
#
#RUN: yaml2obj -format=elf -docnum 1 %s -o %t.comdat1.o
#RUN: yaml2obj -format=elf -docnum 2 %s -o %t.comdat2.o
#RUN: yaml2obj -format=elf -docnum 3 %s -o %t.g1.o
#RUN: lld -flavor gnu -target x86_64 %t.comdat1.o %t.comdat2.o \
#RUN: %t.g1.o --noinhibit-exec --output-filetype=yaml -o %t2.out.yaml
#RUN: lld -flavor gnu -target x86_64 %t.comdat1.o %t.comdat2.o \
#RUN: %t.g1.o --noinhibit-exec -o %t2.out
#RUN: FileCheck %s -check-prefix=CHECKGROUP < %t2.out.yaml
#RUN: llvm-readobj -sections %t2.out | FileCheck %s -check-prefix=CHECKGROUPSECTIONS
#RUN: llvm-readobj -symbols %t2.out | FileCheck %s -check-prefix=CHECKSYMBOLS
#CHECKGROUP:  - name:            g1
#CHECKGROUP:    scope:           global
#CHECKGROUP:    content:         [ 0A, 00, 00, 00 ]
#CHECKGROUP:    section-name:    .data
#CHECKGROUPSECTIONS:    Name: .foo
#CHECKGROUPSECTIONS:    Type: SHT_PROGBITS
#CHECKGROUPSECTIONS:    Flags [
#CHECKGROUPSECTIONS:      SHF_ALLOC
#CHECKGROUPSECTIONS:      SHF_EXECINSTR
#CHECKGROUPSECTIONS:    ]
#CHECKGROUPSECTIONS:    Size: 2
#CHECKGROUPSECTIONS:    Name: .data
#CHECKGROUPSECTIONS:    Type: SHT_PROGBITS
#CHECKGROUPSECTIONS:    Flags [
#CHECKGROUPSECTIONS:      SHF_ALLOC
#CHECKGROUPSECTIONS:      SHF_WRITE
#CHECKGROUPSECTIONS:    ]
#CHECKGROUPSECTIONS:    Size: 4
#CHECKSYMBOLS:    Name: g1
#CHECKSYMBOLS:    Section: .data
---
FileHeader:
  Class:           ELFCLASS64
  Data:            ELFDATA2LSB
  OSABI:           ELFOSABI_GNU
  Type:            ET_REL
  Machine:         EM_X86_64
Sections:
  - Name:            .group
    Type:            SHT_GROUP
    Link:            .symtab
    AddressAlign:    0x0000000000000004
    Info:            g1
    Members:
      - SectionOrType:   GRP_COMDAT
      - SectionOrType:   .foo
      - SectionOrType:   .rela.foo
  - Name:            .text
    Type:            SHT_PROGBITS
    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
    AddressAlign:    0x0000000000000004
    Content:         ''
  - Name:            .data
    Type:            SHT_PROGBITS
    Flags:           [ SHF_WRITE, SHF_ALLOC ]
    AddressAlign:    0x0000000000000004
    Content:         ''
  - Name:            .bss
    Type:            SHT_NOBITS
    Flags:           [ SHF_WRITE, SHF_ALLOC ]
    AddressAlign:    0x0000000000000004
  - Name:            .foo
    Type:            SHT_PROGBITS
    Flags:           [ SHF_ALLOC, SHF_EXECINSTR, SHF_GROUP ]
    AddressAlign:    0x0000000000000001
    Content:         '0000'
  - Name:            .rela.foo
    Type:            SHT_RELA
    Flags:           [ SHF_GROUP ]
    Link:            .symtab
    AddressAlign:    0x0000000000000008
    Info:            .foo
    Relocations:
      - Offset:          0x0000000000000000
        Symbol:          g1
        Type:            R_X86_64_16
Symbols:
  Local:
    - Name:            .text
      Type:            STT_SECTION
      Section:         .text
    - Name:            .data
      Type:            STT_SECTION
      Section:         .data
    - Name:            .bss
      Type:            STT_SECTION
      Section:         .bss
    - Name:            .foo
      Type:            STT_SECTION
      Section:         .foo
  Global:
    - Name:            g1
...
---
FileHeader:
  Class:           ELFCLASS64
  Data:            ELFDATA2LSB
  OSABI:           ELFOSABI_GNU
  Type:            ET_REL
  Machine:         EM_X86_64
Sections:
  - Name:            .group
    Type:            SHT_GROUP
    Link:            .symtab
    AddressAlign:    0x0000000000000004
    Info:            g1
    Members:
      - SectionOrType:   GRP_COMDAT
      - SectionOrType:   .foo
  - Name:            .text
    Type:            SHT_PROGBITS
    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
    AddressAlign:    0x0000000000000004
    Content:         ''
  - Name:            .data
    Type:            SHT_PROGBITS
    Flags:           [ SHF_WRITE, SHF_ALLOC ]
    AddressAlign:    0x0000000000000004
    Content:         ''
  - Name:            .bss
    Type:            SHT_NOBITS
    Flags:           [ SHF_WRITE, SHF_ALLOC ]
    AddressAlign:    0x0000000000000004
  - Name:            .foo
    Type:            SHT_PROGBITS
    Flags:           [ SHF_ALLOC, SHF_EXECINSTR, SHF_GROUP ]
    AddressAlign:    0x0000000000000001
    Content:         '90'
Symbols:
  Local:
    - Name:            .text
      Type:            STT_SECTION
      Section:         .text
    - Name:            .data
      Type:            STT_SECTION
      Section:         .data
    - Name:            .bss
      Type:            STT_SECTION
      Section:         .bss
    - Name:            .foo
      Type:            STT_SECTION
      Section:         .foo
  Global:
    - Name:            g1
      Section:         .foo
...
---
FileHeader:
  Class:           ELFCLASS64
  Data:            ELFDATA2LSB
  OSABI:           ELFOSABI_GNU
  Type:            ET_REL
  Machine:         EM_X86_64
Sections:
  - Name:            .text
    Type:            SHT_PROGBITS
    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
    AddressAlign:    0x0000000000000004
    Content:         ''
  - Name:            .data
    Type:            SHT_PROGBITS
    Flags:           [ SHF_WRITE, SHF_ALLOC ]
    AddressAlign:    0x0000000000000004
    Content:         0A000000
  - Name:            .bss
    Type:            SHT_NOBITS
    Flags:           [ SHF_WRITE, SHF_ALLOC ]
    AddressAlign:    0x0000000000000004
  - Name:            .comment
    Type:            SHT_PROGBITS
    Flags:           [ SHF_MERGE, SHF_STRINGS ]
    AddressAlign:    0x0000000000000001
    Content:         00636C616E672076657273696F6E20332E372E3020287472756E6B203232393535372920286C6C766D2F7472756E6B203232393536332900
  - Name:            .note.GNU-stack
    Type:            SHT_PROGBITS
    AddressAlign:    0x0000000000000001
    Content:         ''
Symbols:
  Local:
    - Name:            global-g1.c
      Type:            STT_FILE
    - Name:            .text
      Type:            STT_SECTION
      Section:         .text
    - Name:            .data
      Type:            STT_SECTION
      Section:         .data
    - Name:            .bss
      Type:            STT_SECTION
      Section:         .bss
    - Name:            .comment
      Type:            STT_SECTION
      Section:         .comment
    - Name:            .note.GNU-stack
      Type:            STT_SECTION
      Section:         .note.GNU-stack
  Global:
    - Name:            g1
      Type:            STT_OBJECT
      Section:         .data
      Size:            0x0000000000000004
...