When performing template argument deduction given a function argument
of incomplete array type, attempt to complete the array type. This was
made much easier by Chandler's addition of RequireCompleteExprType(),
which I've tweaked (slightly) to improve the consistency of the
DeclRefExpr. Fixes PR7985.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@132530 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplateDeduction.cpp b/lib/Sema/SemaTemplateDeduction.cpp
index ed1b671..7d0ce8b 100644
--- a/lib/Sema/SemaTemplateDeduction.cpp
+++ b/lib/Sema/SemaTemplateDeduction.cpp
@@ -2500,6 +2500,12 @@
if (ParamRefType) {
QualType PointeeType = ParamRefType->getPointeeType();
+ // If the argument has incomplete array type, try to complete it's type.
+ if (ArgType->isIncompleteArrayType() &&
+ !S.RequireCompleteExprType(Arg, S.PDiag(),
+ std::make_pair(SourceLocation(), S.PDiag())))
+ ArgType = Arg->getType();
+
// [C++0x] If P is an rvalue reference to a cv-unqualified
// template parameter and the argument is an lvalue, the type
// "lvalue reference to A" is used in place of A for type