Fix rapidjson for Clang 10

Based on Tencent/rapidjson#1679 Addresses USCiLab#631
groscoe2 · May 28, 2020 · 2425e46 · 2425e46
1 parent 3e4d1b8
commit 2425e46
Showing 1 changed file with 13 additions and 6 deletions.
diff --git a/include/cereal/external/rapidjson/document.h b/include/cereal/external/rapidjson/document.h
@@ -24,6 +24,9 @@
 #include "encodedstream.h"
 #include <new>      // placement new
 #include <limits>
+#ifdef __cpp_lib_three_way_comparison
+#include <compare>
+#endif
 
 CEREAL_RAPIDJSON_DIAG_PUSH
 #ifdef __clang__
@@ -175,12 +178,16 @@ class GenericMemberIterator {
 
     //! @name relations
     //@{
-    bool operator==(ConstIterator that) const { return ptr_ == that.ptr_; }
-    bool operator!=(ConstIterator that) const { return ptr_ != that.ptr_; }
-    bool operator<=(ConstIterator that) const { return ptr_ <= that.ptr_; }
-    bool operator>=(ConstIterator that) const { return ptr_ >= that.ptr_; }
-    bool operator< (ConstIterator that) const { return ptr_ < that.ptr_; }
-    bool operator> (ConstIterator that) const { return ptr_ > that.ptr_; }
+    template <bool Const_> bool operator==(const GenericMemberIterator<Const_, Encoding, Allocator>& that) const { return ptr_ == that.ptr_; }
+    template <bool Const_> bool operator!=(const GenericMemberIterator<Const_, Encoding, Allocator>& that) const { return ptr_ != that.ptr_; }
+    template <bool Const_> bool operator<=(const GenericMemberIterator<Const_, Encoding, Allocator>& that) const { return ptr_ <= that.ptr_; }
+    template <bool Const_> bool operator>=(const GenericMemberIterator<Const_, Encoding, Allocator>& that) const { return ptr_ >= that.ptr_; }
+    template <bool Const_> bool operator< (const GenericMemberIterator<Const_, Encoding, Allocator>& that) const { return ptr_ < that.ptr_; }
+    template <bool Const_> bool operator> (const GenericMemberIterator<Const_, Encoding, Allocator>& that) const { return ptr_ > that.ptr_; }
+
+#ifdef __cpp_lib_three_way_comparison
+    template <bool Const_> std::strong_ordering operator<=>(const GenericMemberIterator<Const_, Encoding, Allocator>& that) const { return ptr_ <=> that.ptr_; }
+#endif
     //@}
 
     //! @name dereference