Fix crash in cleanup attr handling
ResolveSingleFunctionTemplateSpecialization() returns 0 and doesn't emit diags
unless the expression has template-ids, so we must null check the result.
Also add a better diag noting which overloads are causing the problem.
Reviewed by Aaron Ballman.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@193055 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaOverload.cpp b/lib/Sema/SemaOverload.cpp
index 6dbb7b6..20cfb00 100644
--- a/lib/Sema/SemaOverload.cpp
+++ b/lib/Sema/SemaOverload.cpp
@@ -9672,6 +9672,9 @@
/// template, where that template-id refers to a single template whose template
/// arguments are either provided by the template-id or have defaults,
/// as described in C++0x [temp.arg.explicit]p3.
+///
+/// If no template-ids are found, no diagnostics are emitted and NULL is
+/// returned.
FunctionDecl *
Sema::ResolveSingleFunctionTemplateSpecialization(OverloadExpr *ovl,
bool Complain,