When enough hydrogen is put under really high pressure and heated, there is a chance a singularity is formed. Other times just noble gas and CO2 are formed so I really don't know if this a bug with hydrogen, CO2, or noble gas or whether its just a possible side effect of the noble gas ---> CO2 reaction.
@Tandors(View Post) It depends on the initial temperature of the hydrogen. If you heat it to the max temp, a lot will be formed, but if you have it at about 5000 degrees it might only go to CO2 before fusion stops.