# REQUIRES: system-windows
# RUN: yaml2obj < %s > %t1.obj
# RUN: yaml2obj < %s > %t2.obj
# RUN: not lld-link /out:%t.exe %t1.obj %t2.obj >& %t.log
# RUN: FileCheck %s < %t.log

# CHECK: duplicate symbol: "int __cdecl mangled(void)" (?mangled@@YAHXZ) in {{.+}}1.obj and in {{.+}}2.obj

--- !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:       16
    SectionData:     000000000000
symbols:
  - Name:            .text
    Value:           0
    SectionNumber:   1
    SimpleType:      IMAGE_SYM_TYPE_NULL
    ComplexType:     IMAGE_SYM_DTYPE_NULL
    StorageClass:    IMAGE_SYM_CLASS_STATIC
    SectionDefinition:
      Length:          6
      NumberOfRelocations: 0
      NumberOfLinenumbers: 0
      CheckSum:        0
      Number:          0
  - Name:            '?mangled@@YAHXZ'
    Value:           0
    SectionNumber:   1
    SimpleType:      IMAGE_SYM_TYPE_NULL
    ComplexType:     IMAGE_SYM_DTYPE_FUNCTION
    StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
...