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85255a04e5
Ignore top-level qualifiers in casts, which fixes issues in reinterpret_cast. This rule comes from [expr.type]/8.2.2 which explains that casting to a pr-qualified type should actually cast to the unqualified type. In C++ this is only done for types that aren't classes or arrays. Fixes: PR49221 Reviewed By: Anastasia Differential Revision: https://reviews.llvm.org/D102689
38 lines
1.6 KiB
Plaintext
38 lines
1.6 KiB
Plaintext
// RUN: %clang_cc1 %s -pedantic -verify -fsyntax-only
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typedef int int2 __attribute__((ext_vector_type(2)));
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typedef int int3 __attribute__((ext_vector_type(3)));
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typedef int int4 __attribute__((ext_vector_type(4)));
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struct X {};
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__global int g = 0;
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__global int *__global g_ptr = &g;
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kernel void foo() {
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// Testing conversions between vectors and vectors/scalars
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long l1;
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auto l_to_i2 = reinterpret_cast<int2>(l1);
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int2 i2;
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auto i2_to_l = reinterpret_cast<long>(i2);
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auto i2_to_i = reinterpret_cast<int>(i2); // expected-error{{reinterpret_cast from vector 'int2' (vector of 2 'int' values) to scalar 'int' of different size}}
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auto i2_to_i2 = reinterpret_cast<int2>(i2);
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// Testing reinterpret_cast with address spaces.
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__private short s;
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auto s2 = reinterpret_cast<__private short>(s);
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auto s3 = reinterpret_cast<decltype(s)>(s);
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auto s4 = reinterpret_cast<__global short>(s);
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__private X x;
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auto x2 = reinterpret_cast<__private X>(x); // expected-error{{reinterpret_cast from '__private X' to '__private X' is not allowed}}
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auto ptr = reinterpret_cast<__global int* __private>(g_ptr);
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(void)reinterpret_cast<__private int* __private>(g_ptr); // expected-error{{reinterpret_cast from '__global int *' to '__private int *' is not allowed}}
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// Only integral types (and pointer/references) can be reinterpret casted to themselves.
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// Currently this does not include any opencl types.
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reserve_id_t r_id1;
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auto r_id2 = reinterpret_cast<reserve_id_t>(r_id1); // expected-error{{reinterpret_cast from 'reserve_id_t' to 'reserve_id_t' is not allowed}}
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}
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