[OPENMP] Initial parsing and sema analysis for 'single' directive.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@211774 91177308-0d34-0410-b5e6-96231b3b80d8

5 files changed, 680 insertions, 0 deletions

diff --git a/test/OpenMP/nesting_of_regions.cpp b/test/OpenMP/nesting_of_regions.cpp
index 9d0ee29ec3..79f3cd6782 100644
--- a/test/OpenMP/nesting_of_regions.cpp
+++ b/test/OpenMP/nesting_of_regions.cpp
@@ -22,6 +22,9 @@ void foo() {
   {
     bar();
   }
+#pragma omp parallel
+#pragma omp single
+  bar();
 #pragma omp simd
   for (int i = 0; i < 10; ++i) {
 #pragma omp for // expected-error {{OpenMP constructs may not be nested inside a simd region}}
@@ -54,6 +57,13 @@ void foo() {
       bar();
     }
   }
+#pragma omp simd
+  for (int i = 0; i < 10; ++i) {
+#pragma omp single // expected-error {{OpenMP constructs may not be nested inside a simd region}}
+    {
+      bar();
+    }
+  }
 #pragma omp for
   for (int i = 0; i < 10; ++i) {
 #pragma omp for // expected-error {{region cannot be closely nested inside 'for' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
@@ -86,6 +96,13 @@ void foo() {
       bar();
     }
   }
+#pragma omp for
+  for (int i = 0; i < 10; ++i) {
+#pragma omp single // expected-error {{region cannot be closely nested inside 'for' region; perhaps you forget to enclose 'omp single' directive into a parallel region?}}
+    {
+      bar();
+    }
+  }
 #pragma omp sections
   {
 #pragma omp for // expected-error {{region cannot be closely nested inside 'sections' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
@@ -118,10 +135,50 @@ void foo() {
       bar();
     }
   }
+#pragma omp sections
+  {
+#pragma omp section
+    {
+#pragma omp single // expected-error {{region cannot be closely nested inside 'section' region; perhaps you forget to enclose 'omp single' directive into a parallel region?}}
+      bar();
+    }
+  }
 #pragma omp section // expected-error {{orphaned 'omp section' directives are prohibited, it must be closely nested to a sections region}}
   {
     bar();
   }
+#pragma omp single
+  {
+#pragma omp for // expected-error {{region cannot be closely nested inside 'single' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp single
+  {
+#pragma omp simd
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp single
+  {
+#pragma omp parallel
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp single
+  {
+#pragma omp single // expected-error {{region cannot be closely nested inside 'single' region; perhaps you forget to enclose 'omp single' directive into a parallel region?}}
+    {
+      bar();
+    }
+  }
+#pragma omp single
+  {
+#pragma omp sections // expected-error {{region cannot be closely nested inside 'single' region; perhaps you forget to enclose 'omp sections' directive into a parallel region?}}
+    {
+      bar();
+    }
+  }
 }
 
 void foo() {
@@ -143,6 +200,14 @@ void foo() {
   {
     bar();
   }
+#pragma omp parallel
+#pragma omp sections
+  {
+    bar();
+  }
+#pragma omp parallel
+#pragma omp single
+  bar();
 #pragma omp simd
   for (int i = 0; i < 10; ++i) {
 #pragma omp for // expected-error {{OpenMP constructs may not be nested inside a simd region}}
@@ -175,6 +240,11 @@ void foo() {
       bar();
     }
   }
+#pragma omp simd
+  for (int i = 0; i < 10; ++i) {
+#pragma omp single // expected-error {{OpenMP constructs may not be nested inside a simd region}}
+    bar();
+  }
 #pragma omp for
   for (int i = 0; i < 10; ++i) {
 #pragma omp for // expected-error {{region cannot be closely nested inside 'for' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
@@ -207,6 +277,11 @@ void foo() {
       bar();
     }
   }
+#pragma omp for
+  for (int i = 0; i < 10; ++i) {
+#pragma omp single // expected-error {{region cannot be closely nested inside 'for' region; perhaps you forget to enclose 'omp single' directive into a parallel region?}}
+    bar();
+  }
 #pragma omp sections
   {
 #pragma omp for // expected-error {{region cannot be closely nested inside 'sections' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
@@ -239,10 +314,47 @@ void foo() {
       bar();
     }
   }
+#pragma omp sections
+  {
+#pragma omp single // expected-error {{region cannot be closely nested inside 'sections' region; perhaps you forget to enclose 'omp single' directive into a parallel region?}}
+    bar();
+  }
 #pragma omp section // expected-error {{orphaned 'omp section' directives are prohibited, it must be closely nested to a sections region}}
   {
     bar();
   }
+#pragma omp single
+  {
+#pragma omp for // expected-error {{region cannot be closely nested inside 'single' region; perhaps you forget to enclose 'omp for' directive into a parallel region?}}
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp single
+  {
+#pragma omp simd
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp single
+  {
+#pragma omp parallel
+    for (int i = 0; i < 10; ++i)
+      ;
+  }
+#pragma omp single
+  {
+#pragma omp single // expected-error {{region cannot be closely nested inside 'single' region; perhaps you forget to enclose 'omp single' directive into a parallel region?}}
+    {
+      bar();
+    }
+  }
+#pragma omp single
+  {
+#pragma omp sections // expected-error {{region cannot be closely nested inside 'single' region; perhaps you forget to enclose 'omp sections' directive into a parallel region?}}
+    {
+      bar();
+    }
+  }
   return foo<int>();
 }
 
diff --git a/test/OpenMP/single_ast_print.cpp b/test/OpenMP/single_ast_print.cpp
new file mode 100644
index 0000000000..eaae114960
--- /dev/null
+++ b/test/OpenMP/single_ast_print.cpp
@@ -0,0 +1,38 @@
+// RUN: %clang_cc1 -verify -fopenmp=libiomp5 -ast-print %s | FileCheck %s
+// RUN: %clang_cc1 -fopenmp=libiomp5 -x c++ -std=c++11 -emit-pch -o %t %s
+// RUN: %clang_cc1 -fopenmp=libiomp5 -std=c++11 -include-pch %t -fsyntax-only -verify %s -ast-print | FileCheck %s
+// expected-no-diagnostics
+
+#ifndef HEADER
+#define HEADER
+
+void foo() {}
+
+template <class T, int N>
+T tmain(T argc) {
+  T b = argc, c, d, e, f, g;
+  static T a;
+// CHECK: static T a;
+#pragma omp parallel
+#pragma omp single private(argc, b), firstprivate(c, d), nowait
+  foo();
+  // CHECK-NEXT: #pragma omp parallel
+  // CHECK-NEXT: #pragma omp single private(argc,b) firstprivate(c,d) nowait
+  // CHECK-NEXT: foo();
+  return T();
+}
+
+int main(int argc, char **argv) {
+  int b = argc, c, d, e, f, g;
+  static int a;
+// CHECK: static int a;
+#pragma omp parallel
+#pragma omp single private(argc, b), firstprivate(argv, c), nowait
+  foo();
+  // CHECK-NEXT: #pragma omp parallel
+  // CHECK-NEXT: #pragma omp single private(argc,b) firstprivate(argv,c) nowait
+  // CHECK-NEXT: foo();
+  return (tmain<int, 5>(argc) + tmain<char, 1>(argv[0][0]));
+}
+
+#endif
diff --git a/test/OpenMP/single_firstprivate_messages.cpp b/test/OpenMP/single_firstprivate_messages.cpp
new file mode 100644
index 0000000000..6d4988254f
--- /dev/null
+++ b/test/OpenMP/single_firstprivate_messages.cpp
@@ -0,0 +1,239 @@
+// RUN: %clang_cc1 -verify -fopenmp=libiomp5 %s
+
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+struct S1; // expected-note 2 {{declared here}} expected-note 2 {{forward declaration of 'S1'}}
+extern S1 a;
+class S2 {
+  mutable int a;
+
+public:
+  S2() : a(0) {}
+  S2(S2 &s2) : a(s2.a) {}
+  static float S2s;
+  static const float S2sc;
+};
+const float S2::S2sc = 0;
+const S2 b;
+const S2 ba[5];
+class S3 {
+  int a;
+  S3 &operator=(const S3 &s3);
+
+public:
+  S3() : a(0) {}
+  S3(S3 &s3) : a(s3.a) {}
+};
+const S3 c;
+const S3 ca[5];
+extern const int f;
+class S4 { // expected-note 2 {{'S4' declared here}}
+  int a;
+  S4();
+  S4(const S4 &s4);
+
+public:
+  S4(int v) : a(v) {}
+};
+class S5 { // expected-note 4 {{'S5' declared here}}
+  int a;
+  S5(const S5 &s5) : a(s5.a) {}
+
+public:
+  S5() : a(0) {}
+  S5(int v) : a(v) {}
+};
+class S6 {
+  int a;
+  S6() : a(0) {}
+
+public:
+  S6(const S6 &s6) : a(s6.a) {}
+  S6(int v) : a(v) {}
+};
+
+S3 h;
+#pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
+
+template <class I, class C>
+int foomain(int argc, char **argv) {
+  I e(4); // expected-note {{'e' defined here}}
+  C g(5); // expected-note 2 {{'g' defined here}}
+  int i;
+  int &j = i; // expected-note {{'j' defined here}}
+#pragma omp parallel
+#pragma omp single firstprivate // expected-error {{expected '(' after 'firstprivate'}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate() // expected-error {{expected expression}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(argc)
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(S1) // expected-error {{'S1' does not refer to a value}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(a, b) // expected-error {{firstprivate variable with incomplete type 'S1'}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(argv[1]) // expected-error {{expected variable name}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(e, g) // expected-error 2 {{firstprivate variable must have an accessible, unambiguous copy constructor}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(h) // expected-error {{threadprivate or thread local variable cannot be firstprivate}}
+  foo();
+#pragma omp parallel
+#pragma omp single linear(i) // expected-error {{unexpected OpenMP clause 'linear' in directive '#pragma omp single'}}
+  foo();
+#pragma omp parallel
+  {
+    int v = 0;
+    int i;                         // expected-note {{variable with automatic storage duration is predetermined as private; perhaps you forget to enclose 'omp single' directive into a parallel or another task region?}}
+#pragma omp single firstprivate(i) // expected-error {{private variable cannot be firstprivate}}
+    foo();
+    v += i;
+  }
+#pragma omp parallel shared(i)
+#pragma omp parallel private(i)
+#pragma omp single firstprivate(j) // expected-error {{arguments of OpenMP clause 'firstprivate' cannot be of reference type}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(i)
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(g) // expected-error {{firstprivate variable must have an accessible, unambiguous copy constructor}}
+  foo();
+#pragma omp parallel private(i)    // expected-note {{defined as private}}
+#pragma omp single firstprivate(i) // expected-error {{firstprivate variable must be shared}}
+  foo();
+#pragma omp parallel reduction(+ : i) // expected-note {{defined as reduction}}
+#pragma omp single firstprivate(i)    // expected-error {{firstprivate variable must be shared}}
+  foo();
+  return 0;
+}
+
+int main(int argc, char **argv) {
+  const int d = 5;
+  const int da[5] = {0};
+  S4 e(4); // expected-note {{'e' defined here}}
+  S5 g(5); // expected-note 2 {{'g' defined here}}
+  S3 m;
+  S6 n(2);
+  int i;
+  int &j = i; // expected-note {{'j' defined here}}
+#pragma omp parallel
+#pragma omp single firstprivate // expected-error {{expected '(' after 'firstprivate'}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate() // expected-error {{expected expression}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(argc)
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(S1) // expected-error {{'S1' does not refer to a value}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(a, b, c, d, f) // expected-error {{firstprivate variable with incomplete type 'S1'}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(argv[1]) // expected-error {{expected variable name}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(2 * 2) // expected-error {{expected variable name}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(ba) // OK
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(ca) // OK
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(da) // OK
+  foo();
+  int xa;
+#pragma omp parallel
+#pragma omp single firstprivate(xa) // OK
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(S2::S2s) // OK
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(S2::S2sc) // OK
+  foo();
+#pragma omp parallel
+#pragma omp single safelen(5) // expected-error {{unexpected OpenMP clause 'safelen' in directive '#pragma omp single'}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(e, g) // expected-error 2 {{firstprivate variable must have an accessible, unambiguous copy constructor}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(m) // OK
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(h) // expected-error {{threadprivate or thread local variable cannot be firstprivate}}
+  foo();
+#pragma omp parallel
+#pragma omp single private(xa), firstprivate(xa) // expected-error {{private variable cannot be firstprivate}} expected-note {{defined as private}}
+  foo();
+#pragma omp parallel shared(xa)
+#pragma omp single firstprivate(xa) // OK: may be firstprivate
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(j) // expected-error {{arguments of OpenMP clause 'firstprivate' cannot be of reference type}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(g) // expected-error {{firstprivate variable must have an accessible, unambiguous copy constructor}}
+  foo();
+#pragma omp parallel
+#pragma omp single firstprivate(n) // OK
+  foo();
+#pragma omp parallel
+  {
+    int v = 0;
+    int i;                         // expected-note {{variable with automatic storage duration is predetermined as private; perhaps you forget to enclose 'omp single' directive into a parallel or another task region?}}
+#pragma omp single firstprivate(i) // expected-error {{private variable cannot be firstprivate}}
+    foo();
+    v += i;
+  }
+#pragma omp parallel private(i)    // expected-note {{defined as private}}
+#pragma omp single firstprivate(i) // expected-error {{firstprivate variable must be shared}}
+  foo();
+#pragma omp parallel reduction(+ : i) // expected-note {{defined as reduction}}
+#pragma omp single firstprivate(i)    // expected-error {{firstprivate variable must be shared}}
+  foo();
+
+  return foomain<S4, S5>(argc, argv); // expected-note {{in instantiation of function template specialization 'foomain<S4, S5>' requested here}}
+}
diff --git a/test/OpenMP/single_misc_messages.c b/test/OpenMP/single_misc_messages.c
new file mode 100644
index 0000000000..8667b50469
--- /dev/null
+++ b/test/OpenMP/single_misc_messages.c
@@ -0,0 +1,151 @@
+// RUN: %clang_cc1 -fsyntax-only -fopenmp=libiomp5 -verify %s
+
+void foo();
+
+// expected-error@+1 {{unexpected OpenMP directive '#pragma omp single'}}
+#pragma omp single
+
+// expected-error@+1 {{unexpected OpenMP directive '#pragma omp single'}}
+#pragma omp single foo
+
+void test_no_clause() {
+  int i;
+#pragma omp single
+  foo();
+
+#pragma omp single
+  ++i;
+}
+
+void test_branch_protected_scope() {
+  int i = 0;
+L1:
+  ++i;
+
+  int x[24];
+
+#pragma omp parallel
+#pragma omp single
+  {
+    if (i == 5)
+      goto L1; // expected-error {{use of undeclared label 'L1'}}
+    else if (i == 6)
+      return; // expected-error {{cannot return from OpenMP region}}
+    else if (i == 7)
+      goto L2;
+    else if (i == 8) {
+    L2:
+      x[i]++;
+    }
+  }
+
+  if (x[0] == 0)
+    goto L2; // expected-error {{use of undeclared label 'L2'}}
+  else if (x[1] == 1)
+    goto L1;
+}
+
+void test_invalid_clause() {
+  int i;
+#pragma omp parallel
+// expected-warning@+1 {{extra tokens at the end of '#pragma omp single' are ignored}}
+#pragma omp single foo bar
+  foo();
+}
+
+void test_non_identifiers() {
+  int i, x;
+
+#pragma omp parallel
+// expected-warning@+1 {{extra tokens at the end of '#pragma omp single' are ignored}}
+#pragma omp single;
+  foo();
+#pragma omp parallel
+// expected-error@+2 {{unexpected OpenMP clause 'linear' in directive '#pragma omp single'}}
+// expected-warning@+1 {{extra tokens at the end of '#pragma omp single' are ignored}}
+#pragma omp single linear(x);
+  foo();
+
+#pragma omp parallel
+// expected-warning@+1 {{extra tokens at the end of '#pragma omp single' are ignored}}
+#pragma omp single private(x);
+  foo();
+
+#pragma omp parallel
+// expected-warning@+1 {{extra tokens at the end of '#pragma omp single' are ignored}}
+#pragma omp single, private(x);
+  foo();
+}
+
+void test_private() {
+  int i;
+#pragma omp parallel
+// expected-error@+2 {{expected expression}}
+// expected-error@+1 {{expected ')'}} expected-note@+1 {{to match this '('}}
+#pragma omp single private(
+  foo();
+#pragma omp parallel
+// expected-error@+2 {{expected ')'}} expected-note@+2 {{to match this '('}}
+// expected-error@+1 2 {{expected expression}}
+#pragma omp single private(,
+  foo();
+#pragma omp parallel
+// expected-error@+1 2 {{expected expression}}
+#pragma omp single private(, )
+  foo();
+#pragma omp parallel
+// expected-error@+1 {{expected expression}}
+#pragma omp single private()
+  foo();
+#pragma omp parallel
+// expected-error@+1 {{expected expression}}
+#pragma omp single private(int)
+  foo();
+#pragma omp parallel
+// expected-error@+1 {{expected variable name}}
+#pragma omp single private(0)
+  foo();
+
+  int x, y, z;
+#pragma omp parallel
+#pragma omp single private(x)
+  foo();
+#pragma omp parallel
+#pragma omp single private(x, y)
+  foo();
+#pragma omp parallel
+#pragma omp single private(x, y, z)
+  foo();
+}
+
+void test_firstprivate() {
+  int i;
+#pragma omp parallel
+// expected-error@+2 {{expected ')'}} expected-note@+2 {{to match this '('}}
+// expected-error@+1 {{expected expression}}
+#pragma omp single firstprivate(
+  foo();
+
+#pragma omp parallel
+// expected-error@+2 {{expected ')'}} expected-note@+2 {{to match this '('}}
+// expected-error@+1 2 {{expected expression}}
+#pragma omp single firstprivate(,
+  foo();
+#pragma omp parallel
+// expected-error@+1 2 {{expected expression}}
+#pragma omp single firstprivate(, )
+  foo();
+#pragma omp parallel
+// expected-error@+1 {{expected expression}}
+#pragma omp single firstprivate()
+  foo();
+#pragma omp parallel
+// expected-error@+1 {{expected expression}}
+#pragma omp single firstprivate(int)
+  foo();
+#pragma omp parallel
+// expected-error@+1 {{expected variable name}}
+#pragma omp single firstprivate(0)
+  foo();
+}
+
diff --git a/test/OpenMP/single_private_messages.cpp b/test/OpenMP/single_private_messages.cpp
new file mode 100644
index 0000000000..1414a92ee0
--- /dev/null
+++ b/test/OpenMP/single_private_messages.cpp
@@ -0,0 +1,140 @@
+// RUN: %clang_cc1 -verify -fopenmp=libiomp5 %s
+
+void foo() {
+}
+
+bool foobool(int argc) {
+  return argc;
+}
+
+struct S1; // expected-note 2 {{declared here}} expected-note 2 {{forward declaration of 'S1'}}
+extern S1 a;
+class S2 {
+  mutable int a;
+
+public:
+  S2() : a(0) {}
+};
+const S2 b;
+const S2 ba[5];
+class S3 {
+  int a;
+
+public:
+  S3() : a(0) {}
+};
+const S3 ca[5];
+class S4 { // expected-note {{'S4' declared here}}
+  int a;
+  S4();
+
+public:
+  S4(int v) : a(v) {}
+};
+class S5 { // expected-note {{'S5' declared here}}
+  int a;
+  S5() : a(0) {}
+
+public:
+  S5(int v) : a(v) {}
+};
+
+S3 h;
+#pragma omp threadprivate(h) // expected-note 2 {{defined as threadprivate or thread local}}
+
+template <class I, class C>
+int foomain(I argc, C **argv) {
+  I e(4);
+  I g(5);
+  int i;
+  int &j = i;                // expected-note {{'j' defined here}}
+#pragma omp single private // expected-error {{expected '(' after 'private'}}
+  foo();
+#pragma omp single private( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+#pragma omp single private() // expected-error {{expected expression}}
+  foo();
+#pragma omp single private(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+#pragma omp single private(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+#pragma omp single private(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
+  foo();
+#pragma omp single private(argc)
+  foo();
+#pragma omp single private(S1) // expected-error {{'S1' does not refer to a value}}
+  foo();
+#pragma omp single private(a, b) // expected-error {{private variable with incomplete type 'S1'}}
+  foo();
+#pragma omp single private(argv[1]) // expected-error {{expected variable name}}
+  foo();
+#pragma omp single private(e, g)
+  foo();
+#pragma omp single private(h) // expected-error {{threadprivate or thread local variable cannot be private}}
+  foo();
+#pragma omp single shared(i) // expected-error {{unexpected OpenMP clause 'shared' in directive '#pragma omp single'}}
+  foo();
+#pragma omp parallel
+  {
+    int v = 0;
+    int i;
+#pragma omp single private(i)
+    foo();
+    v += i;
+  }
+#pragma omp parallel shared(i)
+#pragma omp parallel private(i)
+#pragma omp single private(j) // expected-error {{arguments of OpenMP clause 'private' cannot be of reference type}}
+  foo();
+#pragma omp single private(i)
+  foo();
+  return 0;
+}
+
+int main(int argc, char **argv) {
+  S4 e(4); // expected-note {{'e' defined here}}
+  S5 g(5); // expected-note {{'g' defined here}}
+  int i;
+  int &j = i;                // expected-note {{'j' defined here}}
+#pragma omp single private // expected-error {{expected '(' after 'private'}}
+  foo();
+#pragma omp single private( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+#pragma omp single private() // expected-error {{expected expression}}
+  foo();
+#pragma omp single private(argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+#pragma omp single private(argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
+  foo();
+#pragma omp single private(argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
+  foo();
+#pragma omp single private(argc)
+  foo();
+#pragma omp single private(S1) // expected-error {{'S1' does not refer to a value}}
+  foo();
+#pragma omp single private(a, b) // expected-error {{private variable with incomplete type 'S1'}}
+  foo();
+#pragma omp single private(argv[1]) // expected-error {{expected variable name}}
+  foo();
+#pragma omp single private(e, g) // expected-error 2 {{private variable must have an accessible, unambiguous default constructor}}
+  foo();
+#pragma omp single private(h) // expected-error {{threadprivate or thread local variable cannot be private}}
+  foo();
+#pragma omp single shared(i) // expected-error {{unexpected OpenMP clause 'shared' in directive '#pragma omp single'}}
+  foo();
+#pragma omp parallel
+  {
+    int i;
+#pragma omp single private(i)
+    foo();
+  }
+#pragma omp parallel shared(i)
+#pragma omp parallel private(i)
+#pragma omp single private(j) // expected-error {{arguments of OpenMP clause 'private' cannot be of reference type}}
+  foo();
+#pragma omp single private(i)
+  foo();
+
+  return 0;
+}
+