70         return std::nullopt;  in AsShapeResult()
75     return std::nullopt;  in AsShapeResult()
93       return std::nullopt;  in AsExtentArrayExpr()
107   return std::nullopt;  in AsConstantShape()
132     return std::nullopt;  in AsConstantExtents()
148     return std::nullopt;  in AsShape()
164     return std::nullopt;  in Fold()
204       return std::nullopt;  in GetSize()
428     return std::nullopt;  in GetNonNegativeExtent()
462             return std::nullopt;  in GetExtent()
473   return std::nullopt;  in GetExtent()
504             return std::nullopt;  in GetExtent()
524     return std::nullopt;  in ComputeUpperBound()
542         return std::nullopt;  in GetRawUpperBound()
557   return std::nullopt;  in GetRawUpperBound()
580   return std::nullopt;  in GetExplicitUBOUND()
593         return std::nullopt;  in GetUBOUND()
609   return std::nullopt;  in GetUBOUND()
630         result.emplace_back(std::nullopt); // UBOUND folding replaces with -1  in GetUBOUNDs()
1018         return std::nullopt;  in CheckConformance()
1021       return std::nullopt;  in CheckConformance()