RUN: not llvm-dwp %p/../Inputs/duplicate/c.dwo %p/../Inputs/duplicate/c.dwo -o %t 2>&1 \
RUN:   | FileCheck --check-prefix=DWOS %s

RUN: not llvm-dwp %p/../Inputs/duplicate/c.dwo %p/../Inputs/duplicate/bc.dwp -o %t 2>&1 \
RUN:   | FileCheck --check-prefix=2DWP %s

RUN: not llvm-dwp %p/../Inputs/duplicate/ac.dwp %p/../Inputs/duplicate/c.dwo -o %t 2>&1 \
RUN:   | FileCheck --check-prefix=1DWP %s

RUN: not llvm-dwp %p/../Inputs/duplicate_dwo_name/c.dwo %p/../Inputs/duplicate_dwo_name/c.dwo -o %t 2>&1 \
RUN:   | FileCheck --check-prefix=DWODWOS %s

RUN: not llvm-dwp %p/../Inputs/duplicate_dwo_name/c.dwo %p/../Inputs/duplicate_dwo_name/bc.dwp -o %t 2>&1 \
RUN:   | FileCheck --check-prefix=DWO2DWP %s

RUN: not llvm-dwp %p/../Inputs/duplicate_dwo_name/ac.dwp %p/../Inputs/duplicate_dwo_name/c.dwo -o %t 2>&1 \
RUN:   | FileCheck --check-prefix=DWO1DWP %s

Build from a, b, and c.c all containing a single void() func by the name of the file.

DWOS: error: Duplicate DWO ID ({{.*}}) in 'c.c' and 'c.c'{{$}}
1DWP: error: Duplicate DWO ID ({{.*}}) in 'c.c' (from '{{.*}}ac.dwp') and 'c.c'{{$}}
2DWP: error: Duplicate DWO ID ({{.*}}) in 'c.c' and 'c.c' (from '{{.*}}bc.dwp'){{$}}

DWODWOS: error: Duplicate DWO ID ({{.*}}) in 'c.c' and 'c.c'{{$}}
DWO1DWP: error: Duplicate DWO ID ({{.*}}) in 'c.c' (from 'c.dwo' in '{{.*}}ac.dwp') and 'c.c'{{$}}
DWO2DWP: error: Duplicate DWO ID ({{.*}}) in 'c.c' and 'c.c' (from 'c.dwo' in '{{.*}}bc.dwp'){{$}}