vendor/clang/clang-release_80-r351543

13 files changed, 124 insertions, 51 deletions

diff --git a/include/clang/Basic/DiagnosticSemaKinds.td b/include/clang/Basic/DiagnosticSemaKinds.td
index 5feb877e46c5..b71f65d146ca 100644
--- a/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/include/clang/Basic/DiagnosticSemaKinds.td
@@ -274,6 +274,10 @@ def warn_riscv_interrupt_attribute : Warning<
    "RISC-V 'interrupt' attribute only applies to functions that have "
    "%select{no parameters|a 'void' return type}0">,
    InGroup<IgnoredAttributes>;
+def warn_msp430_interrupt_attribute : Warning<
+   "MSP430 'interrupt' attribute only applies to functions that have "
+   "%select{no parameters|a 'void' return type}0">,
+   InGroup<IgnoredAttributes>;
 def warn_unused_parameter : Warning<"unused parameter %0">,
   InGroup<UnusedParameter>, DefaultIgnore;
 def warn_unused_variable : Warning<"unused variable %0">,
diff --git a/lib/Basic/Version.cpp b/lib/Basic/Version.cpp
index a1a67c2bc144..1d594b974189 100644
--- a/lib/Basic/Version.cpp
+++ b/lib/Basic/Version.cpp
@@ -36,7 +36,7 @@ std::string getClangRepositoryPath() {
 
   // If the SVN_REPOSITORY is empty, try to use the SVN keyword. This helps us
   // pick up a tag in an SVN export, for example.
-  StringRef SVNRepository("$URL: https://llvm.org/svn/llvm-project/cfe/trunk/lib/Basic/Version.cpp $");
+  StringRef SVNRepository("$URL: https://llvm.org/svn/llvm-project/cfe/branches/release_80/lib/Basic/Version.cpp $");
   if (URL.empty()) {
     URL = SVNRepository.slice(SVNRepository.find(':'),
                               SVNRepository.find("/lib/Basic"));
diff --git a/lib/CodeGen/ItaniumCXXABI.cpp b/lib/CodeGen/ItaniumCXXABI.cpp
index b53304528c3d..c56875a03680 100644
--- a/lib/CodeGen/ItaniumCXXABI.cpp
+++ b/lib/CodeGen/ItaniumCXXABI.cpp
@@ -2463,10 +2463,12 @@ ItaniumCXXABI::getOrCreateThreadLocalWrapper(const VarDecl *VD,
     CGM.SetLLVMFunctionAttributesForDefinition(nullptr, Wrapper);
 
   // Always resolve references to the wrapper at link time.
-  if (!Wrapper->hasLocalLinkage() && !(isThreadWrapperReplaceable(VD, CGM) &&
-      !llvm::GlobalVariable::isLinkOnceLinkage(Wrapper->getLinkage()) &&
-      !llvm::GlobalVariable::isWeakODRLinkage(Wrapper->getLinkage())))
-    Wrapper->setVisibility(llvm::GlobalValue::HiddenVisibility);
+  if (!Wrapper->hasLocalLinkage())
+    if (!isThreadWrapperReplaceable(VD, CGM) ||
+        llvm::GlobalVariable::isLinkOnceLinkage(Wrapper->getLinkage()) ||
+        llvm::GlobalVariable::isWeakODRLinkage(Wrapper->getLinkage()) ||
+        VD->getVisibility() == HiddenVisibility)
+      Wrapper->setVisibility(llvm::GlobalValue::HiddenVisibility);
 
   if (isThreadWrapperReplaceable(VD, CGM)) {
     Wrapper->setCallingConv(llvm::CallingConv::CXX_FAST_TLS);
diff --git a/lib/CodeGen/TargetInfo.cpp b/lib/CodeGen/TargetInfo.cpp
index 89ec73670a73..f5a770ed9d84 100644
--- a/lib/CodeGen/TargetInfo.cpp
+++ b/lib/CodeGen/TargetInfo.cpp
@@ -6774,21 +6774,19 @@ void MSP430TargetCodeGenInfo::setTargetAttributes(
   if (GV->isDeclaration())
     return;
   if (const FunctionDecl *FD = dyn_cast_or_null<FunctionDecl>(D)) {
-    if (const MSP430InterruptAttr *attr = FD->getAttr<MSP430InterruptAttr>()) {
-      // Handle 'interrupt' attribute:
-      llvm::Function *F = cast<llvm::Function>(GV);
+    const auto *InterruptAttr = FD->getAttr<MSP430InterruptAttr>();
+    if (!InterruptAttr)
+      return;
 
-      // Step 1: Set ISR calling convention.
-      F->setCallingConv(llvm::CallingConv::MSP430_INTR);
+    // Handle 'interrupt' attribute:
+    llvm::Function *F = cast<llvm::Function>(GV);
 
-      // Step 2: Add attributes goodness.
-      F->addFnAttr(llvm::Attribute::NoInline);
+    // Step 1: Set ISR calling convention.
+    F->setCallingConv(llvm::CallingConv::MSP430_INTR);
 
-      // Step 3: Emit ISR vector alias.
-      unsigned Num = attr->getNumber() / 2;
-      llvm::GlobalAlias::create(llvm::Function::ExternalLinkage,
-                                "__isr_" + Twine(Num), F);
-    }
+    // Step 2: Add attributes goodness.
+    F->addFnAttr(llvm::Attribute::NoInline);
+    F->addFnAttr("interrupt", llvm::utostr(InterruptAttr->getNumber()));
   }
 }
 
diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index 0e10804a2ec7..139ac8aab433 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -5377,6 +5377,27 @@ static void handleARMInterruptAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
 }
 
 static void handleMSP430InterruptAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
+  // MSP430 'interrupt' attribute is applied to
+  // a function with no parameters and void return type.
+  if (!isFunctionOrMethod(D)) {
+    S.Diag(D->getLocation(), diag::warn_attribute_wrong_decl_type)
+        << "'interrupt'" << ExpectedFunctionOrMethod;
+    return;
+  }
+
+  if (hasFunctionProto(D) && getFunctionOrMethodNumParams(D) != 0) {
+    S.Diag(D->getLocation(), diag::warn_msp430_interrupt_attribute)
+        << 0;
+    return;
+  }
+
+  if (!getFunctionOrMethodResultType(D)->isVoidType()) {
+    S.Diag(D->getLocation(), diag::warn_msp430_interrupt_attribute)
+        << 1;
+    return;
+  }
+
+  // The attribute takes one integer argument.
   if (!checkAttributeNumArgs(S, AL, 1))
     return;
 
@@ -5386,8 +5407,6 @@ static void handleMSP430InterruptAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
     return;
   }
 
-  // FIXME: Check for decl - it should be void ()(void).
-
   Expr *NumParamsExpr = static_cast<Expr *>(AL.getArgAsExpr(0));
   llvm::APSInt NumParams(32);
   if (!NumParamsExpr->isIntegerConstantExpr(NumParams, S.Context)) {
@@ -5396,9 +5415,9 @@ static void handleMSP430InterruptAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
         << NumParamsExpr->getSourceRange();
     return;
   }
-
+  // The argument should be in range 0..63.
   unsigned Num = NumParams.getLimitedValue(255);
-  if ((Num & 1) || Num > 30) {
+  if (Num > 63) {
     S.Diag(AL.getLoc(), diag::err_attribute_argument_out_of_bounds)
         << AL << (int)NumParams.getSExtValue()
         << NumParamsExpr->getSourceRange();
@@ -7346,13 +7365,11 @@ ShouldDiagnoseAvailabilityInContext(Sema &S, AvailabilityResult K,
         return true;
     } else if (K == AR_Unavailable) {
       // It is perfectly fine to refer to an 'unavailable' Objective-C method
-      // when it's actually defined and is referenced from within the
-      // @implementation itself. In this context, we interpret unavailable as a
-      // form of access control.
+      // when it is referenced from within the @implementation itself. In this
+      // context, we interpret unavailable as a form of access control.
       if (const auto *MD = dyn_cast<ObjCMethodDecl>(OffendingDecl)) {
         if (const auto *Impl = dyn_cast<ObjCImplDecl>(C)) {
-          if (MD->getClassInterface() == Impl->getClassInterface() &&
-              MD->isDefined())
+          if (MD->getClassInterface() == Impl->getClassInterface())
             return true;
         }
       }
diff --git a/test/CodeGen/attr-msp430.c b/test/CodeGen/attr-msp430.c
new file mode 100644
index 000000000000..e8b6d0d0fa3e
--- /dev/null
+++ b/test/CodeGen/attr-msp430.c
@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -triple msp430-unknown-unknown -emit-llvm < %s| FileCheck %s
+
+__attribute__((interrupt(1))) void foo(void) {}
+// CHECK: @llvm.used
+// CHECK-SAME: @foo
+
+// CHECK: define msp430_intrcc void @foo() #0
+// CHECK: attributes #0
+// CHECK-SAME: noinline
+// CHECK-SAME: "interrupt"="1"
diff --git a/test/CodeGenCXX/cxx11-thread-local-visibility.cpp b/test/CodeGenCXX/cxx11-thread-local-visibility.cpp
new file mode 100644
index 000000000000..b46d41d7c960
--- /dev/null
+++ b/test/CodeGenCXX/cxx11-thread-local-visibility.cpp
@@ -0,0 +1,17 @@
+// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck --check-prefix=LINUX %s
+// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple x86_64-apple-darwin12 | FileCheck --check-prefix=DARWIN %s
+
+// Regression test for PR40327
+
+// LINUX: @default_tls = thread_local global i32
+// LINUX: @hidden_tls = hidden thread_local global i32
+// LINUX: define weak_odr hidden i32* @_ZTW11default_tls()
+// LINUX: define weak_odr hidden i32* @_ZTW10hidden_tls()
+//
+// DARWIN: @default_tls = internal thread_local global i32
+// DARWIN: @hidden_tls = internal thread_local global i32
+// DARWIN: define cxx_fast_tlscc i32* @_ZTW11default_tls()
+// DARWIN: define hidden cxx_fast_tlscc i32* @_ZTW10hidden_tls()
+
+__attribute__((visibility("default"))) thread_local int default_tls;
+__attribute__((visibility("hidden"))) thread_local int hidden_tls;
diff --git a/test/CodeGenCXX/cxx11-thread-local.cpp b/test/CodeGenCXX/cxx11-thread-local.cpp
index 156c4f591908..de941af1afb8 100644
--- a/test/CodeGenCXX/cxx11-thread-local.cpp
+++ b/test/CodeGenCXX/cxx11-thread-local.cpp
@@ -318,7 +318,7 @@ void set_anon_i() {
 // CHECK-NOT: call void @[[V_M_INIT]]()
 
 
-// LIUNX: define weak_odr hidden i32* @_ZTW1a() {
+// LINUX: define weak_odr hidden i32* @_ZTW1a()
 // DARWIN: define cxx_fast_tlscc i32* @_ZTW1a()
 // LINUX:   call void @_ZTH1a()
 // DARWIN: call cxx_fast_tlscc void @_ZTH1a()
diff --git a/test/Driver/msp430-toolchain.c b/test/Driver/msp430-toolchain.c
index ae5ed9189c82..62ef1c0c1f15 100644
--- a/test/Driver/msp430-toolchain.c
+++ b/test/Driver/msp430-toolchain.c
@@ -8,44 +8,44 @@
 // RUN:   --gcc-toolchain=%S/Inputs/basic_msp430_tree 2>&1 \
 // RUN:   | FileCheck -check-prefix=MSP430 %s
 
-// MSP430: "{{.*}}Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../../../bin/msp430-elf-ld"
+// MSP430: "{{.*}}Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../..{{/|\\\\}}..{{/|\\\\}}bin{{/|\\\\}}msp430-elf-ld"
 // MSP430: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/430"
-// MSP430: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../../../msp430-elf/lib/430"
-// MSP430: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../../../msp430-elf/lib/430/crt0.o"
-// MSP430: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/430/crtbegin.o"
+// MSP430: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../..{{/|\\\\}}..{{/|\\\\}}msp430-elf{{/|\\\\}}lib/430"
+// MSP430: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../..{{/|\\\\}}..{{/|\\\\}}msp430-elf{{/|\\\\}}lib/430{{/|\\\\}}crt0.o"
+// MSP430: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/430{{/|\\\\}}crtbegin.o"
 // MSP430: "--start-group" "-lmul_none" "-lgcc" "-lc" "-lcrt" "-lnosys" "--end-group"
-// MSP430: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/430/crtend.o"
-// MSP430: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../../../msp430-elf/lib/430/crtn.o"
+// MSP430: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/430{{/|\\\\}}crtend.o"
+// MSP430: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../..{{/|\\\\}}..{{/|\\\\}}msp430-elf{{/|\\\\}}lib/430{{/|\\\\}}crtn.o"
 
 // RUN: %clang %s -### -no-canonical-prefixes -target msp430 -nodefaultlibs \
 // RUN:   --gcc-toolchain=%S/Inputs/basic_msp430_tree 2>&1 \
 // RUN:   | FileCheck -check-prefix=MSP430-NO-DFT-LIB %s
 
-// MSP430-NO-DFT-LIB: "{{.*}}Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../../../bin/msp430-elf-ld"
+// MSP430-NO-DFT-LIB: "{{.*}}Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../..{{/|\\\\}}..{{/|\\\\}}bin{{/|\\\\}}msp430-elf-ld"
 // MSP430-NO-DFT-LIB: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/430"
-// MSP430-NO-DFT-LIB: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../../../msp430-elf/lib/430"
-// MSP430-NO-DFT-LIB: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../../../msp430-elf/lib/430/crt0.o"
-// MSP430-NO-DFT-LIB: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/430/crtbegin.o"
+// MSP430-NO-DFT-LIB: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../..{{/|\\\\}}..{{/|\\\\}}msp430-elf{{/|\\\\}}lib/430"
+// MSP430-NO-DFT-LIB: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../..{{/|\\\\}}..{{/|\\\\}}msp430-elf{{/|\\\\}}lib/430{{/|\\\\}}crt0.o"
+// MSP430-NO-DFT-LIB: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/430{{/|\\\\}}crtbegin.o"
 // MSP430-NO-DFT-LIB: "--start-group" "-lmul_none" "-lgcc" "--end-group"
-// MSP430-NO-DFT-LIB: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/430/crtend.o"
-// MSP430-NO-DFT-LIB: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../../../msp430-elf/lib/430/crtn.o"
+// MSP430-NO-DFT-LIB: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/430{{/|\\\\}}crtend.o"
+// MSP430-NO-DFT-LIB: "{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../..{{/|\\\\}}..{{/|\\\\}}msp430-elf{{/|\\\\}}lib/430{{/|\\\\}}crtn.o"
 
 // RUN: %clang %s -### -no-canonical-prefixes -target msp430 -nostartfiles \
 // RUN:   --gcc-toolchain=%S/Inputs/basic_msp430_tree 2>&1 \
 // RUN:   | FileCheck -check-prefix=MSP430-NO-START %s
 
-// MSP430-NO-START: "{{.*}}Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../../../bin/msp430-elf-ld"
+// MSP430-NO-START: "{{.*}}Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../..{{/|\\\\}}..{{/|\\\\}}bin{{/|\\\\}}msp430-elf-ld"
 // MSP430-NO-START: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/430"
-// MSP430-NO-START: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../../../msp430-elf/lib/430"
+// MSP430-NO-START: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../..{{/|\\\\}}..{{/|\\\\}}msp430-elf{{/|\\\\}}lib/430"
 // MSP430-NO-START: "--start-group" "-lmul_none" "-lgcc" "-lc" "-lcrt" "-lnosys" "--end-group"
 
 // RUN: %clang %s -### -no-canonical-prefixes -target msp430 -nostdlib \
 // RUN:   --gcc-toolchain=%S/Inputs/basic_msp430_tree 2>&1 \
 // RUN:   | FileCheck -check-prefix=MSP430-NO-STD-LIB %s
 
-// MSP430-NO-STD-LIB: "{{.*}}Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../../../bin/msp430-elf-ld"
+// MSP430-NO-STD-LIB: "{{.*}}Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../..{{/|\\\\}}..{{/|\\\\}}bin{{/|\\\\}}msp430-elf-ld"
 // MSP430-NO-STD-LIB: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/430"
-// MSP430-NO-STD-LIB: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../../../msp430-elf/lib/430"
+// MSP430-NO-STD-LIB: "-L{{.*}}/Inputs/basic_msp430_tree/lib/gcc/msp430-elf/7.3.1/../../..{{/|\\\\}}..{{/|\\\\}}msp430-elf{{/|\\\\}}lib/430"
 // MSP430-NO-STD-LIB: "--start-group" "-lmul_none" "-lgcc" "--end-group"
 
 // RUN: %clang %s -### -no-canonical-prefixes -target msp430 -mmcu=msp430f147 2>&1 \
diff --git a/test/Sema/attr-msp430.c b/test/Sema/attr-msp430.c
index 26b2d8fcfd65..4b38d09b8675 100644
--- a/test/Sema/attr-msp430.c
+++ b/test/Sema/attr-msp430.c
@@ -1,6 +1,13 @@
 // RUN: %clang_cc1 -triple msp430-unknown-unknown -fsyntax-only -verify %s
 
+__attribute__((interrupt(1))) int t; // expected-warning {{'interrupt' attribute only applies to functions}}
+
 int i;
-void f(void) __attribute__((interrupt(i))); /* expected-error {{'interrupt' attribute requires an integer constant}} */
+__attribute__((interrupt(i))) void f(void); // expected-error {{'interrupt' attribute requires an integer constant}}
+__attribute__((interrupt(1, 2))) void f2(void); // expected-error {{'interrupt' attribute takes one argument}}
+__attribute__((interrupt(1))) int f3(void); // expected-warning {{MSP430 'interrupt' attribute only applies to functions that have a 'void' return type}}
+__attribute__((interrupt(1))) void f4(int a); // expected-warning {{MSP430 'interrupt' attribute only applies to functions that have no parameters}}
+__attribute__((interrupt(64))) void f5(void); // expected-error {{'interrupt' attribute parameter 64 is out of bounds}}
 
-void f2(void) __attribute__((interrupt(12)));
+__attribute__((interrupt(0))) void f6(void);
+__attribute__((interrupt(63))) void f7(void);
diff --git a/test/SemaObjC/call-unavailable-init-in-self.m b/test/SemaObjC/call-unavailable-init-in-self.m
index fa6f670cc997..48fc2326af45 100644
--- a/test/SemaObjC/call-unavailable-init-in-self.m
+++ b/test/SemaObjC/call-unavailable-init-in-self.m
@@ -5,13 +5,24 @@
 + (instancetype)new;
 + (instancetype)alloc;
 
+- (void)declaredInSuper;
+
+@end
+
+@interface NSObject (Category)
+
+- (void)declaredInSuperCategory;
+
 @end
 
 @interface Sub: NSObject
 
 - (instancetype)init __attribute__((unavailable)); // expected-note 4 {{'init' has been explicitly marked unavailable here}}
 
-- (void)notImplemented __attribute__((unavailable)); // expected-note {{'notImplemented' has been explicitly marked unavailable here}}
+- (void)notImplemented __attribute__((unavailable));
+
+- (void)declaredInSuper __attribute__((unavailable));
+- (void)declaredInSuperCategory __attribute__((unavailable));
 
 @end
 
@@ -34,7 +45,14 @@
 }
 
 - (void)reportUseOfUnimplemented {
-  [self notImplemented]; // expected-error {{'notImplemented' is unavailable}}
+  [self notImplemented];
+}
+
+- (void)allowSuperCallUsingSelf {
+  [self declaredInSuper];
+  [[Sub alloc] declaredInSuper];
+  [self declaredInSuperCategory];
+  [[Sub alloc] declaredInSuperCategory];
 }
 
 @end
diff --git a/test/SemaObjC/infer-availability-from-init.m b/test/SemaObjC/infer-availability-from-init.m
index f9996ec70877..7aa1e53c0910 100644
--- a/test/SemaObjC/infer-availability-from-init.m
+++ b/test/SemaObjC/infer-availability-from-init.m
@@ -47,12 +47,12 @@ void usenotmyobject() {
 }
 
 @interface FromSelf : NSObject
--(instancetype)init __attribute__((unavailable)); // expected-note {{'init' has been explicitly marked unavailable here}}
+-(instancetype)init __attribute__((unavailable));
 +(FromSelf*)another_one;
 @end
 
 @implementation FromSelf
 +(FromSelf*)another_one {
-  [self new]; // expected-error{{'new' is unavailable}}
+  [self new];
 }
 @end
diff --git a/test/Tooling/clang-check-mac-libcxx-fixed-compilation-db.cpp b/test/Tooling/clang-check-mac-libcxx-fixed-compilation-db.cpp
index 035155c96c92..8c59a2f07f69 100644
--- a/test/Tooling/clang-check-mac-libcxx-fixed-compilation-db.cpp
+++ b/test/Tooling/clang-check-mac-libcxx-fixed-compilation-db.cpp
@@ -10,7 +10,7 @@
 //
 // RUN: cp $(which clang-check) %t/mock-libcxx/bin/
 // RUN: cp "%s" "%t/test.cpp"
-// RUN: %t/mock-libcxx/bin/clang-check -p "%t" "%t/test.cpp" -- -stdlib=libc++
-
+// RUN: %t/mock-libcxx/bin/clang-check -p "%t" "%t/test.cpp" -- -stdlib=libc++ -target x86_64-apple-darwin
+// REQUIRES: system-darwin
 #include <mock_vector>
 vector v;