// RUN: not %clang %s -cake-is-lie -%0 -%d -HHHH -munknown-to-clang-option -print-stats -funknown-to-clang-option -ifoo -imultilib dir -### 2>&1 | \
// RUN: FileCheck %s
// RUN: %clang %s -imultilib dir -### 2>&1 | \
// RUN: FileCheck %s --check-prefix=MULTILIB
// RUN: not %clang %s -stdlibs=foo -hell -version -### 2>&1 | \
// RUN: FileCheck %s --check-prefix=DID-YOU-MEAN
// RUN: %clang_cl -cake-is-lie -%0 -%d -HHHH -munknown-to-clang-option -print-stats -funknown-to-clang-option -### -c -- %s 2>&1 | \
// RUN: FileCheck %s --check-prefix=CL
// RUN: %clang_cl -Brepo -### -- %s 2>&1 | \
// RUN: FileCheck %s --check-prefix=CL-DID-YOU-MEAN
// RUN: not %clang_cl /Brepo -### -- %s 2>&1 | \
// RUN: FileCheck %s --check-prefix=CL-DID-YOU-MEAN-SLASH
// RUN: not %clang_cl /Brepo -### /Tc%s /link 2>&1 | \
// RUN: FileCheck %s --check-prefix=CL-DID-YOU-MEAN-SLASH
// RUN: not %clang_cl -cake-is-lie -%0 -%d -HHHH -munknown-to-clang-option -print-stats -funknown-to-clang-option -c -Werror=unknown-argument -### -- %s 2>&1 | \
// RUN: FileCheck %s --check-prefix=CL-ERROR
// RUN: not %clang_cl -helo -Werror=unknown-argument -### -- %s 2>&1 | \
// RUN: FileCheck %s --check-prefix=CL-ERROR-DID-YOU-MEAN
// RUN: %clang_cl -cake-is-lie -%0 -%d -HHHH -munknown-to-clang-option -print-stats -funknown-to-clang-option -c -Wno-unknown-argument -### -- %s 2>&1 | \
// RUN: FileCheck %s --check-prefix=SILENT
// RUN: not %clang -cc1as -hell --version 2>&1 | \
// RUN: FileCheck %s --check-prefix=CC1AS-DID-YOU-MEAN
// RUN: not %clang -cc1asphalt -help 2>&1 | \
// RUN: FileCheck %s --check-prefix=UNKNOWN-INTEGRATED
// This needs to exit non-0, for configure scripts.
// RUN: not %clang /GR-
// CHECK: error: unknown argument: '-cake-is-lie'
// CHECK: error: unknown argument: '-%0'
// CHECK: error: unknown argument: '-%d'
// CHECK: error: unknown argument: '-HHHH'
// CHECK: error: unknown argument: '-munknown-to-clang-option'
// CHECK: error: unknown argument '-print-stats'; did you mean '-Xclang -print-stats'?
// CHECK: error: unknown argument: '-funknown-to-clang-option'
// CHECK: error: unknown argument: '-ifoo'
// MULTILIB: warning: argument unused during compilation: '-imultilib dir'
// DID-YOU-MEAN: error: unknown argument '-stdlibs=foo'; did you mean '-stdlib=foo'?
// DID-YOU-MEAN: error: unknown argument '-hell'; did you mean '-help'?
// DID-YOU-MEAN: error: unknown argument '-version'; did you mean '--version'?
// CL: warning: unknown argument ignored in clang-cl: '-cake-is-lie'
// CL: warning: unknown argument ignored in clang-cl: '-%0'
// CL: warning: unknown argument ignored in clang-cl: '-%d'
// CL: warning: unknown argument ignored in clang-cl: '-HHHH'
// CL: warning: unknown argument ignored in clang-cl: '-munknown-to-clang-option'
// CL: warning: unknown argument ignored in clang-cl: '-print-stats'
// CL: warning: unknown argument ignored in clang-cl: '-funknown-to-clang-option'
// CL-DID-YOU-MEAN: warning: unknown argument ignored in clang-cl '-Brepo'; did you mean '-Brepro'?
// CL-DID-YOU-MEAN-SLASH: error: no such file or directory: '/Brepo'; did you mean '/Brepro'?
// CL-ERROR: error: unknown argument ignored in clang-cl: '-cake-is-lie'
// CL-ERROR: error: unknown argument ignored in clang-cl: '-%0'
// CL-ERROR: error: unknown argument ignored in clang-cl: '-%d'
// CL-ERROR: error: unknown argument ignored in clang-cl: '-HHHH'
// CL-ERROR: error: unknown argument ignored in clang-cl: '-munknown-to-clang-option'
// CL-ERROR: error: unknown argument ignored in clang-cl: '-print-stats'
// CL-ERROR: error: unknown argument ignored in clang-cl: '-funknown-to-clang-option'
// CL-ERROR-DID-YOU-MEAN: error: unknown argument ignored in clang-cl '-helo'; did you mean '-help'?
// SILENT-NOT: error:
// SILENT-NOT: warning:
// CC1AS-DID-YOU-MEAN: error: unknown argument '-hell'; did you mean '-help'?
// CC1AS-DID-YOU-MEAN: error: unknown argument '--version'; did you mean '-version'?
// UNKNOWN-INTEGRATED: error: unknown integrated tool '-cc1asphalt'. Valid tools include '-cc1', '-cc1as' and '-cc1gen-reproducer'.
// RUN: %clang -S %s -o %t.s -Wunknown-to-clang-option 2>&1 | FileCheck --check-prefix=IGNORED %s
// IGNORED: warning: unknown warning option '-Wunknown-to-clang-option'
// RUN: %clang -### -offload-arch=sm_70 --offload-arch=sm_70 -offload-device-only -o ffload-device-only \
// RUN: -output -o foo %s 2>&1 | FileCheck --check-prefix=O-WARN %s
// O-WARN: warning: joined argument treated as '-o ffload-arch=sm_70'; did you mean '--offload-arch=sm_70'?
// O-WARN-NEXT: warning: joined argument treated as '-o ffload-device-only'; did you mean '--offload-device-only'?
// O-WARN-NEXT: warning: joined argument treated as '-o utput'; did you mean '--output'?
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