Commit d625dfcd authored by Zsolt Parragi's avatar Zsolt Parragi

Avoid compiling CMake itself as C++17 with Clang's MSVC ABI

GUID functions in ATL cause compilation errors with this compiler.
Add the offending case to our check for C++17 support so that it
is not used by default when it does not work.
parent 8a1d25af
......@@ -2,8 +2,21 @@
#include <memory>
#include <unordered_map>
#ifdef _MSC_VER
# include <comdef.h>
int main()
std::unique_ptr<int> u(new int(0));
#ifdef _MSC_VER
// clang-cl has problems instantiating this constructor in C++17 mode
// error: indirection requires pointer operand ('const _GUID' invalid)
// return *_IID;
IUnknownPtr ptr{};
IDispatchPtr disp(ptr);
return *u;
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