Be paranoid about NULL size expressions in dependently-sized array types

llvm-svn: 122454

clang/lib/Sema/SemaTemplateDeduction.cpp

@@ -704,6 +704,7 @@ DeduceTemplateArguments(Sema &S,
       }
       if (const DependentSizedArrayType *DependentArrayArg
             = dyn_cast<DependentSizedArrayType>(ArrayArg))
+        if (DependentArrayArg->getSizeExpr())
           return DeduceNonTypeTemplateArgument(S, NTTP,
                                                DependentArrayArg->getSizeExpr(),
                                                Info, Deduced);