1. A system for automated attribute propagation and hierarchical consistency checking, the system comprising: a memory having computer readable instructions; and a processing device for executing the computer readable instructions, the computer readable instructions comprising: detecting a non-standard extension during convergence of an integrated circuit logic design, wherein detecting a non-standard extension comprises a NOBUFFER attribute being added to a voltage sense line in the integrated circuit design; propagating the non-standard extension to each level of a plurality of hierarchies of the integrated circuit design for which a net utilizes a special constraint; and verifying a hierarchy consistency across each level of the plurality of hierarchies, wherein the NOBUFFER attribute is stored into a non-standard extensions file for each level of the plurality of hierarchies that the voltage sense line traverses, and wherein the non-standard extensions file indicates which of a plurality of pins should receive the NOBUFFER attribute for each level of the plurality of hierarchies, and wherein an integrated circuit is manufactured using the integrated circuit design.