8704ca0fb8
When casting a 0 to a pointer type, the IsNullPtr flag was always set to
false, leading to weird results like a pointer with value 0 that isn't a
null pointer.
This caused
```c++
struct B { const int *p;};
template<B> void f() {}
template void f<B{nullptr}>();
template void f<B{fold(reinterpret_cast<int*>(0))}>();
```
to be valid code, since nullptr and (int*)0 aren't equal. This seems
weird and GCC doesn't behave like this.
10 lines
255 B
Plaintext
10 lines
255 B
Plaintext
// RUN: %clang_cc1 -triple amdgcn -cl-std=clc++ -verify %s
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// expected-no-diagnostics
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#define fold(x) (__builtin_constant_p(x) ? (x) : (x))
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static_assert(nullptr != fold(reinterpret_cast<private int*>(0)));
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static_assert(nullptr == (private int *)0);
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