# RUN: yaml2obj %s -o %t.obj
# RUN: not lld-link /out:%t.exe /entry:main /includeoptional:undeffunc %t.obj /verbose 2>&1 | FileCheck %s

# CHECK: error: undefined symbol: undeffunc

--- !COFF
header:
  Machine:         IMAGE_FILE_MACHINE_AMD64
  Characteristics: []
sections:
  - Name:            .text
    Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
    Alignment:       4
    SectionData:     B800000000506800000000680000000050E80000000050E800000000
    Relocations:
      - VirtualAddress:  17
        SymbolName:      undeffunc
        Type:            IMAGE_REL_AMD64_REL32
symbols:
  - Name:            .text
    Value:           0
    SectionNumber:   1
    SimpleType:      IMAGE_SYM_TYPE_NULL
    ComplexType:     IMAGE_SYM_DTYPE_NULL
    StorageClass:    IMAGE_SYM_CLASS_STATIC
    SectionDefinition:
      Length:          28
      NumberOfRelocations: 1
      NumberOfLinenumbers: 0
      CheckSum:        0
      Number:          0
  - Name:            main
    Value:           0
    SectionNumber:   1
    SimpleType:      IMAGE_SYM_TYPE_NULL
    ComplexType:     IMAGE_SYM_DTYPE_NULL
    StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
  - Name:            undeffunc
    Value:           0
    SectionNumber:   0
    SimpleType:      IMAGE_SYM_TYPE_NULL
    ComplexType:     IMAGE_SYM_DTYPE_NULL
    StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
...