The phrase hung, drawn and quartered would seem to be an exception to the phenomenon of "hanged" being the only form for that form of execution. However, a Google NGrams comparison of the two forms of the phrase hanged/hung, drawn and quartered shows a different story.
grammar - To be "hung, drawn and quartered", or to be "hanged, drawn ...
I use 'hung' for computers, pictures, and stockings, and 'hanged' for people, except in the phrase 'hung, drawn, and quartered'.
MSN: Hanged, drawn & quartered; the most inhuman medieval punishment ever invented
This video examines the historical practice of being hanged, drawn, and quartered, a punishment used for treason in medieval England. The process involved multiple stages designed to maximize ...
b: to suspend by the neck until dead —often hanged in the past Thus the past tense of "hang" in the execution sense is "hanged" but if this is to happen in the future, is it He will be hung Or He will be hanged It seems odd that the future tense would have anything to do with past tense.
Hung vs Hanged: “going to be hung” or “going to be hanged”?
I would use "hangs". "Gets hanged" is inappropriate and awkward, saying that the software has been executed by hanging, and "gets hung" invokes a slang expression regarding the size of sexual anatomy. ("Gets hung up" would avoid this, but "hangs" is still better.) Fun fact: being sentenced to "death by hanging" and "to be hung by the neck until dead" denote different forms of execution. "Death ...