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Internet Explorer's dumbest bug explored

The depths of programming nuttiness
Tue May 06 2003, 19:48
SOME UNFORTUNATE developer at Microsoft is being mercilessly ribbed at the moment. Either that or is busily cleaning out their desk. All because of one silly mistake. How could a mistyped HTML tag cause a whole series of programs to crash?

But that silly mistake is exactly the kind of thing that should never, ever have escaped into the wild. How on Earth it has escaped notice until now is a mystery. Perhaps because only a beginner would miss the equals sign out of an input tag. A beginner might think that the crash was their fault.

Several readers have written in after exploring the bug more fully. And, as Ivor Hewitt found out, perhaps the nastiest indictment on the developer concerned is that the bug will cause IE to crash even if the now famous line is in a comment.

<!-- > <input type code>

The line above will crash IE unless, and here's the big get-out, the line is surrounded by <body> tags. The same goes for the rest of the problem. Put body tags around it and it goes away.

That still won't make many IE users any happier that they only have to wait for some 1337 script kiddie to start sending out emails with it in the header for a laugh. µ

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