Hi chandlerc,
There seem to be an expectation in the testsuite that -### should fail when the
driver itself detects an error.
Unfortunately, that is not currently the case.
This patch fixes that.
http://llvm-reviews.chandlerc.com/D2032
Files:
include/clang/Driver/Options.td
lib/Driver/Driver.cpp
lib/Driver/Tools.cpp
test/Driver/arm-darwin-builtin.c
test/Driver/cl-options.c
test/Driver/cl-outputs.c
test/Driver/clang_f_opts.c
test/Driver/color-diagnostics.c
test/Driver/debug-options.c
test/Driver/fsanitize-blacklist.c
test/Driver/fsanitize.c
test/Driver/gfortran.f90
test/Driver/no-integrated-as-win.c
test/Driver/pic.c
test/Driver/working-directory.c
Index: include/clang/Driver/Options.td
===================================================================
--- include/clang/Driver/Options.td
+++ include/clang/Driver/Options.td
@@ -850,8 +850,6 @@
Flags<[CC1Option]>, HelpText<"Place each data in its own section (ELF Only)">;
def fno_data_sections : Flag <["-"], "fno-data-sections">, Group<f_Group>,
Flags<[CC1Option]>;
-def fdebug_types_section: Flag <["-"], "fdebug-types-section">, Group<f_Group>,
- Flags<[CC1Option]>, HelpText<"Place debug types in their own section (ELF Only)">;
def g_Flag : Flag<["-"], "g">, Group<g_Group>,
HelpText<"Generate source level debug information">, Flags<[CC1Option]>;
def gline_tables_only : Flag<["-"], "gline-tables-only">, Group<g_Group>,
@@ -1436,6 +1434,9 @@
// ignore it for now to avoid breaking builds that use it.
def fdiagnostics_show_location_EQ : Joined<["-"], "fdiagnostics-show-location=">, Group<clang_ignored_f_Group>;
+defm debug_types_section : BooleanFFlag<"debug-types-section">,
+ Group<clang_ignored_f_Group>,
+ HelpText<"Place debug types in their own section (ELF Only)">;
defm eliminate_unused_debug_types : BooleanFFlag<"eliminate-unused-debug-types">, Group<clang_ignored_f_Group>;
defm float_store : BooleanFFlag<"float-store">, Group<clang_ignored_f_Group>;
defm function_attribute_list : BooleanFFlag<"function-attribute-list">, Group<clang_ignored_f_Group>;
Index: lib/Driver/Driver.cpp
===================================================================
--- lib/Driver/Driver.cpp
+++ lib/Driver/Driver.cpp
@@ -561,16 +561,18 @@
int Driver::ExecuteCompilation(const Compilation &C,
SmallVectorImpl< std::pair<int, const Command *> > &FailingCommands) const {
- // Just print if -### was present.
- if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
+ // Print if -### was present.
+ bool HashHashHash = C.getArgs().hasArg(options::OPT__HASH_HASH_HASH);
+ if (HashHashHash)
C.getJobs().Print(llvm::errs(), "\n", true);
- return 0;
- }
// If there were errors building the compilation, quit now.
if (Diags.hasErrorOccurred())
return 1;
+ if (HashHashHash)
+ return 0;
+
C.ExecuteJob(C.getJobs(), FailingCommands);
// Remove temp files.
Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -2580,8 +2580,6 @@
CmdArgs.push_back("-generate-gnu-dwarf-pub-sections");
}
- Args.AddAllArgs(CmdArgs, options::OPT_fdebug_types_section);
-
Args.AddAllArgs(CmdArgs, options::OPT_ffunction_sections);
Args.AddAllArgs(CmdArgs, options::OPT_fdata_sections);
Index: test/Driver/arm-darwin-builtin.c
===================================================================
--- test/Driver/arm-darwin-builtin.c
+++ /dev/null
@@ -1,14 +0,0 @@
-// FIXME: Disable pending PR4941.
-// RUX: clang -target x86_64-apple-darwin9 -arch arm -### -fsyntax-only %s 2> %t &&
-// RUX: grep -- "-fno-builtin-strcat" %t &&
-// RUX: grep -- "-fno-builtin-strcpy" %t &&
-
-// FIXME: Disable pending PR4941.
-// RUX: clang -target x86_64-apple-darwin9 -arch arm -### -fsyntax-only %s -fbuiltin-strcat -fbuiltin-strcpy 2> %t &&
-// RUX: not grep -- "-fno-builtin-strcat" %t &&
-// RUX: not grep -- "-fno-builtin-strcpy" %t &&
-
-// RUN: %clang -target x86_64-apple-darwin9 -arch arm -### -fsyntax-only %s -fbuiltin-strcat -fbuiltin-strcpy 2> %t
-// RUN: not grep -- "-fno-builtin-strcat" %t
-// RUN: not grep -- "-fno-builtin-strcpy" %t
-
Index: test/Driver/cl-options.c
===================================================================
--- test/Driver/cl-options.c
+++ test/Driver/cl-options.c
@@ -110,11 +110,6 @@
// RUN: %clang_cl /MD -### -- %t.obj 2>&1 | FileCheck -check-prefix=LINKUNUSED %s
// LINKUNUSED-NOT: argument unused during compilation
-// Support ignoring warnings about unused arguments.
-// RUN: %clang_cl /Abracadabra -Qunused-arguments -### -- %s 2>&1 | FileCheck -check-prefix=UNUSED %s
-// UNUSED-NOT: warning
-
-
// Unsupported but parsed options. Check that we don't error on them.
// (/Zs is for syntax-only)
// RUN: %clang_cl /Zs /EHsc /Fdfoo /fp:precise /Gd /GL /GL- -- %s 2>&1
Index: test/Driver/cl-outputs.c
===================================================================
--- test/Driver/cl-outputs.c
+++ test/Driver/cl-outputs.c
@@ -25,10 +25,10 @@
// RUN: %clang_cl /Fo.. -### -- %s 2>&1 | FileCheck -check-prefix=FoCRAZY %s
// FoCRAZY: "-o" "..obj"
-// RUN: %clang_cl /Fo -### 2>&1 | FileCheck -check-prefix=FoMISSINGARG %s
+// RUN: not %clang_cl /Fo -### 2>&1 | FileCheck -check-prefix=FoMISSINGARG %s
// FoMISSINGARG: error: argument to '/Fo' is missing (expected 1 value)
-// RUN: %clang_cl /Foa.obj -### -- %s %s 2>&1 | FileCheck -check-prefix=CHECK-MULTIPLESOURCEERROR %s
+// RUN: not %clang_cl /Foa.obj -### -- %s %s 2>&1 | FileCheck -check-prefix=CHECK-MULTIPLESOURCEERROR %s
// CHECK-MULTIPLESOURCEERROR: error: cannot specify '/Foa.obj' when compiling multiple source files
// RUN: %clang_cl /Fomydir/ -### -- %s %s 2>&1 | FileCheck -check-prefix=CHECK-MULTIPLESOURCEOK %s
@@ -83,7 +83,7 @@
// FeDIRNAMEEXTDLL: "-out:foo.dir{{[/\\]+}}a.ext"
// FeDIRNAMEEXTDLL: "-implib:foo.dir{{[/\\]+}}a.lib"
-// RUN: %clang_cl /Fe -### 2>&1 | FileCheck -check-prefix=FeMISSINGARG %s
+// RUN: not %clang_cl /Fe -### 2>&1 | FileCheck -check-prefix=FeMISSINGARG %s
// FeMISSINGARG: error: argument to '/Fe' is missing (expected 1 value)
// RUN: %clang_cl /Fefoo /Febar -### -- %s 2>&1 | FileCheck -check-prefix=FeOVERRIDE %s
@@ -103,5 +103,5 @@
// FaDIRNAME: "-o" "foo.dir{{[/\\]+}}a.asm"
// RUN: %clang_cl /FA /Fafoo.dir/a.ext -### -- %s 2>&1 | FileCheck -check-prefix=FaDIRNAMEEXT %s
// FaDIRNAMEEXT: "-o" "foo.dir{{[/\\]+}}a.ext"
-// RUN: %clang_cl /Faa.asm -### -- %s %s 2>&1 | FileCheck -check-prefix=FaMULTIPLESOURCE %s
+// RUN: not %clang_cl /Faa.asm -### -- %s %s 2>&1 | FileCheck -check-prefix=FaMULTIPLESOURCE %s
// FaMULTIPLESOURCE: error: cannot specify '/Faa.asm' when compiling multiple source files
Index: test/Driver/clang_f_opts.c
===================================================================
--- test/Driver/clang_f_opts.c
+++ test/Driver/clang_f_opts.c
@@ -85,7 +85,7 @@
// CHECK-NO-SLP-VECTORIZE-AGG-NOT: "-vectorize-slp-aggressive"
// RUN: %clang -### -S -fextended-identifiers %s 2>&1 | FileCheck -check-prefix=CHECK-EXTENDED-IDENTIFIERS %s
-// RUN: %clang -### -S -fno-extended-identifiers %s 2>&1 | FileCheck -check-prefix=CHECK-NO-EXTENDED-IDENTIFIERS %s
+// RUN: not %clang -### -S -fno-extended-identifiers %s 2>&1 | FileCheck -check-prefix=CHECK-NO-EXTENDED-IDENTIFIERS %s
// CHECK-EXTENDED-IDENTIFIERS: "-cc1"
// CHECK-EXTENDED-IDENTIFIERS-NOT: "-fextended-identifiers"
// CHECK-NO-EXTENDED-IDENTIFIERS: error: unsupported option '-fno-extended-identifiers'
Index: test/Driver/color-diagnostics.c
===================================================================
--- test/Driver/color-diagnostics.c
+++ test/Driver/color-diagnostics.c
@@ -27,7 +27,7 @@
// RUN: | FileCheck --check-prefix=CHECK-DCE_AUTO %s
// CHECK-DCE_AUTO-NOT: clang{{.*}}" "-fcolor-diagnostics"
-// RUN: %clang -fdiagnostics-color=foo -### -c %s 2>&1 \
+// RUN: not %clang -fdiagnostics-color=foo -### -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-DCE_FOO %s
// CHECK-DCE_FOO: error: the clang compiler does not support '-fdiagnostics-color=foo'
Index: test/Driver/debug-options.c
===================================================================
--- test/Driver/debug-options.c
+++ test/Driver/debug-options.c
@@ -29,7 +29,7 @@
// RUN: %clang -### -c -gdwarf-2 %s 2>&1 | FileCheck -check-prefix=G_D2 %s
//
-// RUN: %clang -### -c -gfoo %s 2>&1 | FileCheck -check-prefix=G_NO %s
+// RUN: not %clang -### -c -gfoo %s 2>&1 | FileCheck -check-prefix=G_NO %s
// RUN: %clang -### -c -g -g0 %s 2>&1 | FileCheck -check-prefix=G_NO %s
// RUN: %clang -### -c -ggdb0 %s 2>&1 | FileCheck -check-prefix=G_NO %s
//
Index: test/Driver/fsanitize-blacklist.c
===================================================================
--- test/Driver/fsanitize-blacklist.c
+++ test/Driver/fsanitize-blacklist.c
@@ -18,9 +18,9 @@
// CHECK-NO-BLACKLIST-NOT: -fsanitize-blacklist
// Driver barks on unexisting blacklist files.
-// RUN: %clang -fno-sanitize-blacklist -fsanitize-blacklist=unexisting.txt %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-NO-SUCH-FILE
+// RUN: not %clang -fno-sanitize-blacklist -fsanitize-blacklist=unexisting.txt %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-NO-SUCH-FILE
// CHECK-NO-SUCH-FILE: error: no such file or directory: 'unexisting.txt'
// Driver properly reports malformed blacklist files.
-// RUN: %clang -fsanitize=address -fsanitize-blacklist=%t.bad %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-BAD-BLACKLIST
+// RUN: not %clang -fsanitize=address -fsanitize-blacklist=%t.bad %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-BAD-BLACKLIST
// CHECK-BAD-BLACKLIST: error: malformed sanitizer blacklist
Index: test/Driver/fsanitize.c
===================================================================
--- test/Driver/fsanitize.c
+++ test/Driver/fsanitize.c
@@ -25,41 +25,41 @@
// RUN: %clang -target x86_64-linux-gnu -fsanitize=address -fno-sanitize=use-after-return %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN-NO-IMPLIED-UAR
// CHECK-ASAN-NO-IMPLIED-UAR-NOT: use-after-return
-// RUN: %clang -target x86_64-linux-gnu -fcatch-undefined-behavior -fno-sanitize-undefined-trap-on-error %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-UNDEFINED-NO-TRAP-ERROR
+// RUN: not %clang -target x86_64-linux-gnu -fcatch-undefined-behavior -fno-sanitize-undefined-trap-on-error %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-UNDEFINED-NO-TRAP-ERROR
// CHECK-UNDEFINED-NO-TRAP-ERROR: '-fcatch-undefined-behavior' not allowed with '-fno-sanitize-undefined-trap-on-error'
-// RUN: %clang -target x86_64-linux-gnu -fsanitize=vptr -fcatch-undefined-behavior %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-VPTR-UNDEF-ERROR
+// RUN: not %clang -target x86_64-linux-gnu -fsanitize=vptr -fcatch-undefined-behavior %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-VPTR-UNDEF-ERROR
// CHECK-VPTR-UNDEF-ERROR: '-fsanitize=vptr' not allowed with '-fcatch-undefined-behavior'
-// RUN: %clang -target x86_64-linux-gnu -fsanitize=undefined -fsanitize-undefined-trap-on-error %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-UNDEFINED-TRAP-ON-ERROR-UNDEF
+// RUN: not %clang -target x86_64-linux-gnu -fsanitize=undefined -fsanitize-undefined-trap-on-error %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-UNDEFINED-TRAP-ON-ERROR-UNDEF
// CHECK-UNDEFINED-TRAP-ON-ERROR-UNDEF: '-fsanitize=undefined' not allowed with '-fsanitize-undefined-trap-on-error'
-// RUN: %clang -target x86_64-linux-gnu -fsanitize=vptr -fsanitize-undefined-trap-on-error %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-UNDEFINED-TRAP-ON-ERROR-VPTR
+// RUN: not %clang -target x86_64-linux-gnu -fsanitize=vptr -fsanitize-undefined-trap-on-error %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-UNDEFINED-TRAP-ON-ERROR-VPTR
// CHECK-UNDEFINED-TRAP-ON-ERROR-VPTR: '-fsanitize=vptr' not allowed with '-fsanitize-undefined-trap-on-error'
-// RUN: %clang -target x86_64-linux-gnu -fsanitize=vptr -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-VPTR-NO-RTTI
-// RUN: %clang -target x86_64-linux-gnu -fsanitize=undefined -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-VPTR-NO-RTTI
+// RUN: not %clang -target x86_64-linux-gnu -fsanitize=vptr -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-VPTR-NO-RTTI
+// RUN: not %clang -target x86_64-linux-gnu -fsanitize=undefined -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-VPTR-NO-RTTI
// CHECK-VPTR-NO-RTTI: '-fsanitize=vptr' not allowed with '-fno-rtti'
-// RUN: %clang -target x86_64-linux-gnu -fsanitize=address,thread -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANA-SANT
+// RUN: not %clang -target x86_64-linux-gnu -fsanitize=address,thread -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANA-SANT
// CHECK-SANA-SANT: '-fsanitize=address' not allowed with '-fsanitize=thread'
-// RUN: %clang -target x86_64-linux-gnu -fsanitize=address,memory -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANA-SANM
+// RUN: not %clang -target x86_64-linux-gnu -fsanitize=address,memory -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANA-SANM
// CHECK-SANA-SANM: '-fsanitize=address' not allowed with '-fsanitize=memory'
-// RUN: %clang -target x86_64-linux-gnu -fsanitize=thread,memory -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANT-SANM
+// RUN: not %clang -target x86_64-linux-gnu -fsanitize=thread,memory -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANT-SANM
// CHECK-SANT-SANM: '-fsanitize=thread' not allowed with '-fsanitize=memory'
-// RUN: %clang -target x86_64-linux-gnu -fsanitize=memory,thread -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANM-SANT
+// RUN: not %clang -target x86_64-linux-gnu -fsanitize=memory,thread -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANM-SANT
// CHECK-SANM-SANT: '-fsanitize=thread' not allowed with '-fsanitize=memory'
-// RUN: %clang -target x86_64-linux-gnu -fsanitize=leak,thread -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANL-SANT
+// RUN: not %clang -target x86_64-linux-gnu -fsanitize=leak,thread -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANL-SANT
// CHECK-SANL-SANT: '-fsanitize=leak' not allowed with '-fsanitize=thread'
-// RUN: %clang -target x86_64-linux-gnu -fsanitize=leak,memory -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANL-SANM
+// RUN: not %clang -target x86_64-linux-gnu -fsanitize=leak,memory -pie -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANL-SANM
// CHECK-SANL-SANM: '-fsanitize=leak' not allowed with '-fsanitize=memory'
-// RUN: %clang -target x86_64-linux-gnu -faddress-sanitizer -fthread-sanitizer -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN-TSAN
+// RUN: not %clang -target x86_64-linux-gnu -faddress-sanitizer -fthread-sanitizer -fno-rtti %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN-TSAN
// CHECK-ASAN-TSAN: '-faddress-sanitizer' not allowed with '-fthread-sanitizer'
// RUN: %clang -target x86_64-linux-gnu -fsanitize=init-order %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ONLY-EXTRA-ASAN
@@ -129,7 +129,7 @@
// RUN: %clang -target arm-linux-androideabi -fsanitize=address -fsanitize-address-zero-base-shadow %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ANDROID-ASAN-ZERO-BASE
// CHECK-ANDROID-ASAN-ZERO-BASE-NOT: argument unused during compilation
-// RUN: %clang -target arm-linux-androideabi -fsanitize=address -fno-sanitize-address-zero-base-shadow %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ANDROID-ASAN-NO-ZERO-BASE
+// RUN: not %clang -target arm-linux-androideabi -fsanitize=address -fno-sanitize-address-zero-base-shadow %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ANDROID-ASAN-NO-ZERO-BASE
// CHECK-ANDROID-ASAN-NO-ZERO-BASE: '-fno-sanitize-address-zero-base-shadow' not allowed with '-fsanitize=address'
// RUN: %clang -target x86_64-linux-gnu %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-RECOVER
@@ -149,6 +149,6 @@
// RUN: %clang -target x86_64-linux-gnu -fsanitize=memory %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-MSAN
// CHECK-MSAN: "-fno-assume-sane-operator-new"
-// RUN: %clang -target x86_64-linux-gnu -fsanitize=zzz %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-DIAG1
+// RUN: not %clang -target x86_64-linux-gnu -fsanitize=zzz %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-DIAG1
// CHECK-DIAG1: unsupported argument 'zzz' to option 'fsanitize='
// CHECK-DIAG1-NOT: unsupported argument 'zzz' to option 'fsanitize='
Index: test/Driver/gfortran.f90
===================================================================
--- test/Driver/gfortran.f90
+++ test/Driver/gfortran.f90
@@ -103,10 +103,8 @@
! RUN: -fshort-enums \
! RUN: -fsign-zero \
! RUN: -fstack-arrays \
-! RUN: -fsyntax-only \
! RUN: -funderscoring \
! RUN: -fwhole-file \
-! RUN: -fworking-directory \
! RUN: -imultilib \
! RUN: -iprefix \
! RUN: -iquote \
@@ -226,7 +224,6 @@
! CHECK: "-fstack-arrays"
! CHECK: "-funderscoring"
! CHECK: "-fwhole-file"
-! CHECK: "-fworking-directory"
! CHECK: "-imultilib"
! CHECK: "-iprefix"
! CHECK: "-iquote"
@@ -239,6 +236,3 @@
! CHECK: "-static-libgfortran"
! CHECK: "-std=f90"
! CHECK: "-undef"
-!
-! Clang understands this one and orders it weirdly.
-! CHECK: "-fsyntax-only"
Index: test/Driver/no-integrated-as-win.c
===================================================================
--- test/Driver/no-integrated-as-win.c
+++ test/Driver/no-integrated-as-win.c
@@ -1,4 +1,4 @@
-// RUN: %clang -target x86_64-pc-win32 -### -no-integrated-as %s -c 2>&1 | FileCheck %s
+// RUN: not %clang -target x86_64-pc-win32 -### -no-integrated-as %s -c 2>&1 | FileCheck %s
// CHECK: there is no external assembler we can use on windows
// But there is for mingw. The source file should only be mentioned once for
Index: test/Driver/pic.c
===================================================================
--- test/Driver/pic.c
+++ test/Driver/pic.c
@@ -174,7 +174,7 @@
// Darwin gets even more special with '-mdynamic-no-pic'. This flag is only
// valid on Darwin, and it's behavior is very strange but needs to remain
// consistent for compatibility.
-// RUN: %clang -c %s -target i386-unknown-unknown -mdynamic-no-pic -### 2>&1 \
+// RUN: not %clang -c %s -target i386-unknown-unknown -mdynamic-no-pic -### 2>&1 \
// RUN: | FileCheck %s --check-prefix=CHECK-NON-DARWIN-DYNAMIC-NO-PIC
// RUN: %clang -c %s -target i386-apple-darwin -mdynamic-no-pic -### 2>&1 \
// RUN: | FileCheck %s --check-prefix=CHECK-DYNAMIC-NO-PIC-32
Index: test/Driver/working-directory.c
===================================================================
--- test/Driver/working-directory.c
+++ test/Driver/working-directory.c
@@ -1,4 +1,4 @@
-// RUN: %clang -### -working-directory /no/such/dir/ input 2>&1 | FileCheck %s
+// RUN: not %clang -### -working-directory /no/such/dir/ input 2>&1 | FileCheck %s
// REQUIRES: shell-preserves-root
//CHECK: no such file or directory: '/no/such/dir/input'
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