[PATCH] D45383: Limit types of builtins that can be redeclared.

[Eli Friedman via Phabricator via cfe-commits]

efriedma added inline comments.


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Comment at: test/Sema/builtin-redecl.cpp:9
+// Overloading a builtin is acceptable in C++.
+void __builtin_va_copy(double d);
+#endif
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We don't want to allow this; in particular, for builtins with custom type-checking, we have no way to correctly resolve which overload to call.  Probably Sema::CheckOverload should be checking canBeRedeclared.


https://reviews.llvm.org/D45383