5e9746f520
This has two significant effects:
1) Direct relational comparisons between null pointer constants (0 and nullopt)
and pointers are now ill-formed. This was always the case for C, and it
appears that C++ only ever permitted by accident. For instance, cases like
nullptr < &a
are now rejected.
2) Comparisons and conditional operators between differently-cv-qualified
pointer types now work, and produce a composite type that both source
pointer types can convert to (when possible). For instance, comparison
between 'int **' and 'const int **' is now valid, and uses an intermediate
type of 'const int *const *'.
Clang previously supported #2 as an extension.
We do not accept the cases in #1 as an extension. I've tested a fair amount of
code to check that this doesn't break it, but if it turns out that someone is
relying on this, we can easily add it back as an extension.
This is a re-commit of r284800.
llvm-svn: 284890
308 lines
9.9 KiB
C++
308 lines
9.9 KiB
C++
// RUN: %clang_cc1 -x c++ -std=c++11 -verify -fopenmp %s
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struct B {
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static int ib[20]; // expected-note 0 {{'B::ib' declared here}}
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static constexpr int bfoo() { return 8; }
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};
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namespace X {
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B x; // expected-note {{'x' defined here}}
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};
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constexpr int bfoo() { return 4; }
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int **z;
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const int C1 = 1;
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const int C2 = 2;
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void test_aligned_colons(int *&rp)
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{
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int *B = 0;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(B:bfoo())
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for (int i = 0; i < 10; ++i) ;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(B::ib:B:bfoo()) // expected-error {{unexpected ':' in nested name specifier; did you mean '::'}}
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for (int i = 0; i < 10; ++i) ;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(B:B::bfoo())
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for (int i = 0; i < 10; ++i) ;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(z:B:bfoo()) // expected-error {{unexpected ':' in nested name specifier; did you mean '::'?}}
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for (int i = 0; i < 10; ++i) ;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(B:B::bfoo())
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for (int i = 0; i < 10; ++i) ;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(X::x : ::z) // expected-error {{integral constant expression must have integral or unscoped enumeration type, not 'int **'}} expected-error {{argument of aligned clause should be array, pointer, reference to array or reference to pointer, not 'B'}}
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for (int i = 0; i < 10; ++i) ;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(B,rp,::z: X::x) // expected-error {{integral constant expression must have integral or unscoped enumeration type, not 'B'}}
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for (int i = 0; i < 10; ++i) ;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(::z)
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for (int i = 0; i < 10; ++i) ;
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#pragma omp distribute simd aligned(B::bfoo()) // expected-error {{expected variable name}}
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for (int i = 0; i < 10; ++i) ;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(B::ib,B:C1+C2) // expected-warning {{aligned clause will be ignored because the requested alignment is not a power of 2}}
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for (int i = 0; i < 10; ++i) ;
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}
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// expected-note@+1 {{'num' defined here}}
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template<int L, class T, class N> T test_template(T* arr, N num) {
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N i;
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T sum = (T)0;
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T ind2 = - num * L;
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// Negative number is passed as L.
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(arr:L) // expected-error {{argument to 'aligned' clause must be a strictly positive integer value}}
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for (i = 0; i < num; ++i) {
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T cur = arr[(int)ind2];
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ind2 += L;
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sum += cur;
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}
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(num:4) // expected-error {{argument of aligned clause should be array, pointer, reference to array or reference to pointer, not 'int'}}
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for (i = 0; i < num; ++i);
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return T();
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}
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template<int LEN> int test_warn() {
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int *ind2 = 0;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(ind2:LEN) // expected-error {{argument to 'aligned' clause must be a strictly positive integer value}}
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for (int i = 0; i < 100; i++) {
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ind2 += LEN;
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}
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return 0;
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}
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struct S1; // expected-note 2 {{declared here}}
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extern S1 a; // expected-note {{'a' declared here}}
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class S2 {
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mutable int a;
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public:
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S2():a(0) { }
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};
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const S2 b; // expected-note 1 {{'b' defined here}}
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const S2 ba[5];
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class S3 {
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int a;
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public:
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S3():a(0) { }
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};
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const S3 ca[5];
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class S4 {
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int a;
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S4();
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public:
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S4(int v):a(v) { }
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};
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class S5 {
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int a;
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S5():a(0) {}
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public:
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S5(int v):a(v) { }
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};
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S3 h; // expected-note 2 {{'h' defined here}}
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#pragma omp threadprivate(h)
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template<class I, class C> int foomain(I argc, C **argv) {
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I e(argc);
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I g(argc);
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int i; // expected-note {{declared here}} expected-note {{'i' defined here}}
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// expected-note@+2 {{declared here}}
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// expected-note@+1 {{reference to 'i' is not a constant expression}}
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int &j = i;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned // expected-error {{expected '(' after 'aligned'}}
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for (I k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
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for (I k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned () // expected-error {{expected expression}}
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for (I k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
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for (I k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned (argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
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for (I k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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// FIXME: Should argc really be a pointer?
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#pragma omp distribute simd aligned (*argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
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for (I k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned (argc : 5) // expected-warning {{aligned clause will be ignored because the requested alignment is not a power of 2}}
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for (I k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned (S1) // expected-error {{'S1' does not refer to a value}}
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for (I k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned (argv[1]) // expected-error {{expected variable name}}
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for (I k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(e, g)
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for (I k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(h) // expected-error {{argument of aligned clause should be array, pointer, reference to array or reference to pointer, not 'S3'}}
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for (I k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(i) // expected-error {{argument of aligned clause should be array, pointer, reference to array or reference to pointer, not 'int'}}
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for (I k = 0; k < argc; ++k) ++k;
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#pragma omp parallel
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{
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int *v = 0;
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I i;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(v:16)
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for (I k = 0; k < argc; ++k) { i = k; v += 2; }
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}
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float *f;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(f)
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for (I k = 0; k < argc; ++k) ++k;
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int v = 0;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(f:j) // expected-note {{initializer of 'j' is not a constant expression}} expected-error {{expression is not an integral constant expression}}
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for (I k = 0; k < argc; ++k) { ++k; v += j; }
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(f)
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for (I k = 0; k < argc; ++k) ++k;
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return 0;
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}
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// expected-note@+1 2 {{'argc' defined here}}
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int main(int argc, char **argv) {
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double darr[100];
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// expected-note@+1 {{in instantiation of function template specialization 'test_template<-4, double, int>' requested here}}
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test_template<-4>(darr, 4);
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test_warn<4>(); // ok
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// expected-note@+1 {{in instantiation of function template specialization 'test_warn<0>' requested here}}
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test_warn<0>();
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int i;
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int &j = i;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned // expected-error {{expected '(' after 'aligned'}}
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for (int k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned ( // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
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for (int k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned () // expected-error {{expected expression}}
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for (int k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned (argv // expected-error {{expected ')'}} expected-note {{to match this '('}}
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for (int k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned (argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error {{argument of aligned clause should be array, pointer, reference to array or reference to pointer, not 'int'}}
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for (int k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned (argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
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for (int k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned (argc) // expected-error {{argument of aligned clause should be array, pointer, reference to array or reference to pointer, not 'int'}}
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for (int k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned (S1) // expected-error {{'S1' does not refer to a value}}
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for (int k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned (a, b) // expected-error {{argument of aligned clause should be array, pointer, reference to array or reference to pointer, not 'S1'}} expected-error {{argument of aligned clause should be array, pointer, reference to array or reference to pointer, not 'S2'}}
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for (int k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned (argv[1]) // expected-error {{expected variable name}}
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for (int k = 0; k < argc; ++k) ++k;
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#pragma omp target
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#pragma omp teams
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#pragma omp distribute simd aligned(h) // expected-error {{argument of aligned clause should be array, pointer, reference to array or reference to pointer, not 'S3'}}
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for (int k = 0; k < argc; ++k) ++k;
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int *pargc = &argc;
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// expected-note@+1 {{in instantiation of function template specialization 'foomain<int *, char>' requested here}}
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foomain<int*,char>(pargc,argv);
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return 0;
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}
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