bulletproof

adj. Used of an algorithm or implementation considered extremely robust ;
lossage-resistant; capable of correctly recovering from any imaginable
exception condition a rare and valued quality. Implies that the programmer
has thought of all possible errors, and added code to protect against each
one. Thus, in some cases, this can imply code that is too heavyweight, due
to excessive paranoia on the part of the programmer. Syn. armor-plated.

