Fixing test to work when the compiler defaults to a different C++ standard version

[dyung]

Summary

This test as originally written fails when run with a compiler that defaults to a different C++ standard. This patch fixes up the test and adds testing it explicitly using c++98 and c++11.

[ABataev]

LG

test/OpenMP/target_teams_distribute_collapse_messages.cpp

 // RUN: %clang_cc1 -verify -fopenmp %s
+// RUN: %clang_cc1 -verify -fopenmp -std=c++98 %s
+// RUN: %clang_cc1 -verify -fopenmp -std=c++11 %s
 
 void foo() {
 }
 
+#if __cplusplus >= 201103L
+// expected-note@+2 4 {{declared here}}
+#endif
 bool foobool(int argc) {
   return argc;
 }
 
 struct S1; // expected-note {{declared here}}
 
 template <class T, typename S, int N, int ST> // expected-note {{declared here}}
 T tmain(T argc, S **argv) { //expected-note 2 {{declared here}}

 #pragma omp target teams distribute collapse (1)) // expected-warning {{extra tokens at the end of '#pragma omp target teams distribute' are ignored}}
   for (int i = ST; i < N; i++)
     argv[0][i] = argv[0][i] - argv[0][i-ST];
 
 #pragma omp target teams distribute collapse ((ST > 0) ? 1 + ST : 2) // expected-note 2 {{as specified in 'collapse' clause}}
   for (int i = ST; i < N; i++)
     argv[0][i] = argv[0][i] - argv[0][i-ST]; // expected-error 2 {{expected 2 for loops after '#pragma omp target teams distribute', but found only 1}}
 
+#if __cplusplus >= 201103L
+// expected-note@+5 2 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
+#endif
 // expected-error@+3 2 {{directive '#pragma omp target teams distribute' cannot contain more than one 'collapse' clause}}
 // expected-error@+2 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
 // expected-error@+1 2 {{expression is not an integral constant expression}}
 #pragma omp target teams distribute collapse (foobool(argc)), collapse (true), collapse (-5)
   for (int i = ST; i < N; i++)
     argv[0][i] = argv[0][i] - argv[0][i-ST];
 
 #pragma omp target teams distribute collapse (S) // expected-error {{'S' does not refer to a value}}
   for (int i = ST; i < N; i++)
     argv[0][i] = argv[0][i] - argv[0][i-ST];
 
-// expected-error@+1 2 {{expression is not an integral constant expression}}
+#if __cplusplus <= 199711L
+  // expected-error@+4 2 {{expression is not an integral constant expression}}
+#else
+  // expected-error@+2 2 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
+#endif
 #pragma omp target teams distribute collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
   for (int i = ST; i < N; i++)
     argv[0][i] = argv[0][i] - argv[0][i-ST];
 
 #pragma omp target teams distribute collapse (1)
   for (int i = ST; i < N; i++)
     argv[0][i] = argv[0][i] - argv[0][i-ST];
 

 #pragma omp target teams distribute collapse (4 // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-note {{as specified in 'collapse' clause}}
   for (int i = 4; i < 12; i++)
     argv[0][i] = argv[0][i] - argv[0][i-4]; // expected-error {{expected 4 for loops after '#pragma omp target teams distribute', but found only 1}}
 
 #pragma omp target teams distribute collapse (2+2)) // expected-warning {{extra tokens at the end of '#pragma omp target teams distribute' are ignored}}  expected-note {{as specified in 'collapse' clause}}
   for (int i = 4; i < 12; i++)
     argv[0][i] = argv[0][i] - argv[0][i-4]; // expected-error {{expected 4 for loops after '#pragma omp target teams distribute', but found only 1}}
 
-#pragma omp target teams distribute collapse (foobool(1) > 0 ? 1 : 2) // expected-error {{expression is not an integral constant expression}}
+// expected-error@+4 {{expression is not an integral constant expression}}
+#if __cplusplus >= 201103L
+// expected-note@+2 {{non-constexpr function 'foobool' cannot be used in a constant expression}}
+#endif
+#pragma omp target teams distribute collapse (foobool(1) > 0 ? 1 : 2)
   for (int i = 4; i < 12; i++)
     argv[0][i] = argv[0][i] - argv[0][i-4];
 
+#if __cplusplus >= 201103L
+  // expected-note@+5{{non-constexpr function 'foobool' cannot be used in a constant expression}}
+#endif
 // expected-error@+3 {{expression is not an integral constant expression}}
 // expected-error@+2 2 {{directive '#pragma omp target teams distribute' cannot contain more than one 'collapse' clause}}
 // expected-error@+1 2 {{argument to 'collapse' clause must be a strictly positive integer value}}
 #pragma omp target teams distribute collapse (foobool(argc)), collapse (true), collapse (-5) 
   for (int i = 4; i < 12; i++)
     argv[0][i] = argv[0][i] - argv[0][i-4];
 
 #pragma omp target teams distribute collapse (S1) // expected-error {{'S1' does not refer to a value}}
   for (int i = 4; i < 12; i++)
     argv[0][i] = argv[0][i] - argv[0][i-4];
 
-// expected-error@+1 {{expression is not an integral constant expression}}
+#if __cplusplus <= 199711L
+  // expected-error@+4 {{expression is not an integral constant expression}}
+#else
+  // expected-error@+2 {{integral constant expression must have integral or unscoped enumeration type, not 'char *'}}
+#endif
 #pragma omp target teams distribute collapse (argv[1]=2) // expected-error {{expected ')'}} expected-note {{to match this '('}}
   for (int i = 4; i < 12; i++)
     argv[0][i] = argv[0][i] - argv[0][i-4];
 
 // expected-error@+3 {{statement after '#pragma omp target teams distribute' must be a for loop}}
 // expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, -1, -2>' requested here}}
 #pragma omp target teams distribute collapse(collapse(tmain<int, char, -1, -2>(argc, argv) // expected-error 2 {{expected ')'}} expected-note 2 {{to match this '('}}
   foo();
 
 #pragma omp target teams distribute collapse (2) // expected-note {{as specified in 'collapse' clause}}
   foo(); // expected-error {{expected 2 for loops after '#pragma omp target teams distribute'}}
 
 // expected-note@+1 {{in instantiation of function template specialization 'tmain<int, char, 1, 0>' requested here}}
   return tmain<int, char, 1, 0>(argc, argv);
 }