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Extend this test and make it a bit clearer which cases Clang is getting wrong. 

llvm-svn: 284331
This commit is contained in:
Richard Smith 2016-10-16 06:23:29 +00:00
parent aa1370ac57
commit ebb006e875
1 changed files with 34 additions and 14 deletions
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48
clang/test/CXX/temp/temp.fct.spec/temp.deduct/temp.deduct.conv/p4.cpp
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@ -1,4 +1,4 @@
// RUN: %clang_cc1 -fsyntax-only %s
// RUN: %clang_cc1 -fsyntax-only %s -verify
struct AnyT {
template<typename T>
@ -11,34 +11,54 @@ void test_cvqual_ref(AnyT any) {
struct AnyThreeLevelPtr {
template<typename T>
operator T***() const
{
T x = 0;
// FIXME: looks like we get this wrong, too!
// x = 0; // will fail if T is deduced to a const type
// (EDG and GCC get this wrong)
return 0;
operator T***() const {
T x = 0; // expected-note 2{{declared const here}}
x = 0; // expected-error 2{{const-qualified type}}
T ***p;
return p;
}
};
struct X { };
void test_deduce_with_qual(AnyThreeLevelPtr a3) {
int * const * const * const ip = a3;
int * const * const * const ip1 = a3;
// FIXME: This is wrong; we are supposed to deduce 'T = int' here.
const int * const * const * const ip2 = a3; // expected-note {{instantiation of}}
// This one is correct, though.
const double * * * ip3 = a3; // expected-note {{instantiation of}}
}
struct AnyPtrMem {
template<typename Class, typename T>
operator T Class::*() const
{
T x = 0;
// FIXME: looks like we get this wrong, too!
// x = 0; // will fail if T is deduced to a const type.
// (EDG and GCC get this wrong)
// This is correct: we don't need a qualification conversion here, so we
// deduce 'T = const float'.
T x = 0; // expected-note {{declared const here}}
x = 0; // expected-error {{const-qualified type}}
return 0;
}
};
void test_deduce_ptrmem_with_qual(AnyPtrMem apm) {
const float X::* pm = apm;
const float X::* pm = apm; // expected-note {{instantiation of}}
}
struct TwoLevelPtrMem {
template<typename Class1, typename Class2, typename T>
operator T Class1::*Class2::*() const
{
T x = 0; // expected-note 2{{declared const here}}
x = 0; // expected-error 2{{const-qualified type}}
return 0;
}
};
void test_deduce_two_level_ptrmem_with_qual(TwoLevelPtrMem apm) {
// FIXME: This is wrong: we should deduce T = 'float'
const float X::* const X::* pm2 = apm; // expected-note {{instantiation of}}
// This is correct: we don't need a qualification conversion, so we directly
// deduce T = 'const double'
const double X::* X::* pm1 = apm; // expected-note {{instantiation of}}
}