198 lines
10 KiB
C++
198 lines
10 KiB
C++
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// RUN: %clang_cc1 -fsyntax-only -verify %s
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// This test checks for the various conversions and casting operations
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// with address-space-qualified pointers.
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struct A { virtual ~A() {} };
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struct B : A { };
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typedef void *void_ptr;
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typedef void __attribute__((address_space(1))) *void_ptr_1;
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typedef void __attribute__((address_space(2))) *void_ptr_2;
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typedef int *int_ptr;
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typedef int __attribute__((address_space(1))) *int_ptr_1;
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typedef int __attribute__((address_space(2))) *int_ptr_2;
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typedef A *A_ptr;
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typedef A __attribute__((address_space(1))) *A_ptr_1;
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typedef A __attribute__((address_space(2))) *A_ptr_2;
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typedef B *B_ptr;
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typedef B __attribute__((address_space(1))) *B_ptr_1;
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typedef B __attribute__((address_space(2))) *B_ptr_2;
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void test_const_cast(int_ptr ip, int_ptr_1 ip1, int_ptr_2 ip2,
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A_ptr ap, A_ptr_1 ap1, A_ptr_2 ap2,
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const int *cip,
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const int __attribute__((address_space(1))) *cip1) {
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// Cannot use const_cast to cast between address spaces, add an
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// address space, or remove an address space.
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(void)const_cast<int_ptr>(ip1); // expected-error{{is not allowed}}
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(void)const_cast<int_ptr>(ip2); // expected-error{{is not allowed}}
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(void)const_cast<int_ptr_1>(ip); // expected-error{{is not allowed}}
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(void)const_cast<int_ptr_1>(ip2); // expected-error{{is not allowed}}
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(void)const_cast<int_ptr_2>(ip); // expected-error{{is not allowed}}
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(void)const_cast<int_ptr_2>(ip1); // expected-error{{is not allowed}}
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(void)const_cast<A_ptr>(ap1); // expected-error{{is not allowed}}
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(void)const_cast<A_ptr>(ap2); // expected-error{{is not allowed}}
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(void)const_cast<A_ptr_1>(ap); // expected-error{{is not allowed}}
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(void)const_cast<A_ptr_1>(ap2); // expected-error{{is not allowed}}
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(void)const_cast<A_ptr_2>(ap); // expected-error{{is not allowed}}
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(void)const_cast<A_ptr_2>(ap1); // expected-error{{is not allowed}}
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// It's acceptable to cast away constness.
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(void)const_cast<int_ptr>(cip);
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(void)const_cast<int_ptr_1>(cip1);
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}
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void test_static_cast(void_ptr vp, void_ptr_1 vp1, void_ptr_2 vp2,
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A_ptr ap, A_ptr_1 ap1, A_ptr_2 ap2,
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B_ptr bp, B_ptr_1 bp1, B_ptr_2 bp2) {
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// Well-formed upcast
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(void)static_cast<A_ptr>(bp);
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(void)static_cast<A_ptr_1>(bp1);
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(void)static_cast<A_ptr_2>(bp2);
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// Well-formed downcast
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(void)static_cast<B_ptr>(ap);
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(void)static_cast<B_ptr_1>(ap1);
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(void)static_cast<B_ptr_2>(ap2);
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// Well-formed cast to/from void
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(void)static_cast<void_ptr>(ap);
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(void)static_cast<void_ptr_1>(ap1);
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(void)static_cast<void_ptr_2>(ap2);
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(void)static_cast<A_ptr>(vp);
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(void)static_cast<A_ptr_1>(vp1);
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(void)static_cast<A_ptr_2>(vp2);
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// Ill-formed upcasts
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(void)static_cast<A_ptr>(bp1); // expected-error{{is not allowed}}
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(void)static_cast<A_ptr>(bp2); // expected-error{{is not allowed}}
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(void)static_cast<A_ptr_1>(bp); // expected-error{{is not allowed}}
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(void)static_cast<A_ptr_1>(bp2); // expected-error{{is not allowed}}
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(void)static_cast<A_ptr_2>(bp); // expected-error{{is not allowed}}
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(void)static_cast<A_ptr_2>(bp1); // expected-error{{is not allowed}}
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// Ill-formed downcasts
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(void)static_cast<B_ptr>(ap1); // expected-error{{casts away qualifiers}}
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(void)static_cast<B_ptr>(ap2); // expected-error{{casts away qualifiers}}
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(void)static_cast<B_ptr_1>(ap); // expected-error{{casts away qualifiers}}
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(void)static_cast<B_ptr_1>(ap2); // expected-error{{casts away qualifiers}}
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(void)static_cast<B_ptr_2>(ap); // expected-error{{casts away qualifiers}}
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(void)static_cast<B_ptr_2>(ap1); // expected-error{{casts away qualifiers}}
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// Ill-formed cast to/from void
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(void)static_cast<void_ptr>(ap1); // expected-error{{is not allowed}}
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(void)static_cast<void_ptr>(ap2); // expected-error{{is not allowed}}
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(void)static_cast<void_ptr_1>(ap); // expected-error{{is not allowed}}
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(void)static_cast<void_ptr_1>(ap2); // expected-error{{is not allowed}}
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(void)static_cast<void_ptr_2>(ap); // expected-error{{is not allowed}}
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(void)static_cast<void_ptr_2>(ap1); // expected-error{{is not allowed}}
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(void)static_cast<A_ptr>(vp1); // expected-error{{casts away qualifiers}}
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(void)static_cast<A_ptr>(vp2); // expected-error{{casts away qualifiers}}
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(void)static_cast<A_ptr_1>(vp); // expected-error{{casts away qualifiers}}
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(void)static_cast<A_ptr_1>(vp2); // expected-error{{casts away qualifiers}}
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(void)static_cast<A_ptr_2>(vp); // expected-error{{casts away qualifiers}}
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(void)static_cast<A_ptr_2>(vp1); // expected-error{{casts away qualifiers}}
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}
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void test_dynamic_cast(A_ptr ap, A_ptr_1 ap1, A_ptr_2 ap2,
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B_ptr bp, B_ptr_1 bp1, B_ptr_2 bp2) {
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// Well-formed upcast
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(void)dynamic_cast<A_ptr>(bp);
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(void)dynamic_cast<A_ptr_1>(bp1);
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(void)dynamic_cast<A_ptr_2>(bp2);
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// Well-formed downcast
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(void)dynamic_cast<B_ptr>(ap);
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(void)dynamic_cast<B_ptr_1>(ap1);
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(void)dynamic_cast<B_ptr_2>(ap2);
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// Ill-formed upcasts
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(void)dynamic_cast<A_ptr>(bp1); // expected-error{{casts away qualifiers}}
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(void)dynamic_cast<A_ptr>(bp2); // expected-error{{casts away qualifiers}}
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(void)dynamic_cast<A_ptr_1>(bp); // expected-error{{casts away qualifiers}}
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(void)dynamic_cast<A_ptr_1>(bp2); // expected-error{{casts away qualifiers}}
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(void)dynamic_cast<A_ptr_2>(bp); // expected-error{{casts away qualifiers}}
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(void)dynamic_cast<A_ptr_2>(bp1); // expected-error{{casts away qualifiers}}
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// Ill-formed downcasts
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(void)dynamic_cast<B_ptr>(ap1); // expected-error{{casts away qualifiers}}
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(void)dynamic_cast<B_ptr>(ap2); // expected-error{{casts away qualifiers}}
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(void)dynamic_cast<B_ptr_1>(ap); // expected-error{{casts away qualifiers}}
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(void)dynamic_cast<B_ptr_1>(ap2); // expected-error{{casts away qualifiers}}
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(void)dynamic_cast<B_ptr_2>(ap); // expected-error{{casts away qualifiers}}
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(void)dynamic_cast<B_ptr_2>(ap1); // expected-error{{casts away qualifiers}}
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}
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void test_reinterpret_cast(void_ptr vp, void_ptr_1 vp1, void_ptr_2 vp2,
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A_ptr ap, A_ptr_1 ap1, A_ptr_2 ap2,
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B_ptr bp, B_ptr_1 bp1, B_ptr_2 bp2,
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const void __attribute__((address_space(1))) * cvp1) {
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// reinterpret_cast can't be used to cast to a different address space unless they are matching (i.e. overlapping).
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(void)reinterpret_cast<A_ptr>(ap1); // expected-error{{reinterpret_cast from 'A_ptr_1' (aka '__attribute__((address_space(1))) A *') to 'A_ptr' (aka 'A *') is not allowed}}
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(void)reinterpret_cast<A_ptr>(ap2); // expected-error{{reinterpret_cast from 'A_ptr_2' (aka '__attribute__((address_space(2))) A *') to 'A_ptr' (aka 'A *') is not allowed}}
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(void)reinterpret_cast<A_ptr>(bp);
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(void)reinterpret_cast<A_ptr>(bp1); // expected-error{{reinterpret_cast from 'B_ptr_1' (aka '__attribute__((address_space(1))) B *') to 'A_ptr' (aka 'A *') is not allowed}}
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(void)reinterpret_cast<A_ptr>(bp2); // expected-error{{reinterpret_cast from 'B_ptr_2' (aka '__attribute__((address_space(2))) B *') to 'A_ptr' (aka 'A *') is not allowed}}
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(void)reinterpret_cast<A_ptr>(vp);
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(void)reinterpret_cast<A_ptr>(vp1); // expected-error{{reinterpret_cast from 'void_ptr_1' (aka '__attribute__((address_space(1))) void *') to 'A_ptr' (aka 'A *') is not allowed}}
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(void)reinterpret_cast<A_ptr>(vp2); // expected-error{{reinterpret_cast from 'void_ptr_2' (aka '__attribute__((address_space(2))) void *') to 'A_ptr' (aka 'A *') is not allowed}}
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(void)reinterpret_cast<A_ptr_1>(ap); // expected-error{{reinterpret_cast from 'A_ptr' (aka 'A *') to 'A_ptr_1' (aka '__attribute__((address_space(1))) A *') is not allowed}}
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(void)reinterpret_cast<A_ptr_1>(ap2); // expected-error{{reinterpret_cast from 'A_ptr_2' (aka '__attribute__((address_space(2))) A *') to 'A_ptr_1' (aka '__attribute__((address_space(1))) A *') is not allowed}}
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(void)reinterpret_cast<A_ptr_1>(bp); // expected-error{{reinterpret_cast from 'B_ptr' (aka 'B *') to 'A_ptr_1' (aka '__attribute__((address_space(1))) A *') is not allowed}}
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(void)reinterpret_cast<A_ptr_1>(bp1);
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(void)reinterpret_cast<A_ptr_1>(bp2); // expected-error{{reinterpret_cast from 'B_ptr_2' (aka '__attribute__((address_space(2))) B *') to 'A_ptr_1' (aka '__attribute__((address_space(1))) A *') is not allowed}}
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(void)reinterpret_cast<A_ptr_1>(vp); // expected-error{{reinterpret_cast from 'void_ptr' (aka 'void *') to 'A_ptr_1' (aka '__attribute__((address_space(1))) A *') is not allowed}}
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(void)reinterpret_cast<A_ptr_1>(vp1);
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(void)reinterpret_cast<A_ptr_1>(vp2); // expected-error{{reinterpret_cast from 'void_ptr_2' (aka '__attribute__((address_space(2))) void *') to 'A_ptr_1' (aka '__attribute__((address_space(1))) A *') is not allowed}}
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// ... but don't try to cast away constness!
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(void)reinterpret_cast<A_ptr_2>(cvp1); // expected-error{{casts away qualifiers}}
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}
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void test_cstyle_cast(void_ptr vp, void_ptr_1 vp1, void_ptr_2 vp2,
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A_ptr ap, A_ptr_1 ap1, A_ptr_2 ap2,
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B_ptr bp, B_ptr_1 bp1, B_ptr_2 bp2,
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const void __attribute__((address_space(1))) *cvp1) {
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// C-style casts are the wild west of casts.
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(void)(A_ptr)(ap1);
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(void)(A_ptr)(ap2);
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(void)(A_ptr)(bp);
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(void)(A_ptr)(bp1);
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(void)(A_ptr)(bp2);
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(void)(A_ptr)(vp);
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(void)(A_ptr)(vp1);
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(void)(A_ptr)(vp2);
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(void)(A_ptr_1)(ap);
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(void)(A_ptr_1)(ap2);
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(void)(A_ptr_1)(bp);
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(void)(A_ptr_1)(bp1);
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(void)(A_ptr_1)(bp2);
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(void)(A_ptr_1)(vp);
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(void)(A_ptr_1)(vp1);
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(void)(A_ptr_1)(vp2);
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(void)(A_ptr_2)(cvp1);
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}
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void test_implicit_conversion(void_ptr vp, void_ptr_1 vp1, void_ptr_2 vp2,
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A_ptr ap, A_ptr_1 ap1, A_ptr_2 ap2,
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B_ptr bp, B_ptr_1 bp1, B_ptr_2 bp2) {
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// Well-formed conversions
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void_ptr vpA = ap;
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void_ptr_1 vp_1A = ap1;
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void_ptr_2 vp_2A = ap2;
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A_ptr ap_A = bp;
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A_ptr_1 ap_A1 = bp1;
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A_ptr_2 ap_A2 = bp2;
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// Ill-formed conversions
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void_ptr vpB = ap1; // expected-error{{cannot initialize a variable of type}}
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void_ptr_1 vp_1B = ap2; // expected-error{{cannot initialize a variable of type}}
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A_ptr ap_B = bp1; // expected-error{{cannot initialize a variable of type}}
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A_ptr_1 ap_B1 = bp2; // expected-error{{cannot initialize a variable of type}}
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}
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