Re: *crash* on try to find out how many nesting levelsare allowed

On Sun, 9 Jul 2000, Shane Caraveo wrote: > > > Stanislav Malyshev wrote: > > > > w>> I wanted to find out how many nesting levels are allowed, but after > > w>> class "a" gets instanciated from inside of "b", PHP crashes, > > w>> that should > > w>> not be. > > > > And what did you expect? You tried to crash it, you succeeded. Infinite > > recursion leads to crash. Try it in C, you get the same. > > That's an entirely lame attitude. The goal here should be a stable php, > irregardless of the quality of code php is running. In the case of > infinite loops, recursions, etc., php can either throw an error if it is > somehow recognizable, or it can simply timeout. Allowing it to crash > because 'infinite recursion leads to crash' is pathetic. If it crashes, > it can be fixed. As a matter of fact, it can't be. There's no way to recover from stack overflows in UNIX, you can't really tell for sure (in a reasonable, portable way) how much stack space you have left, and even if you could tell, it would be way too slow and clumsy to protect against it. Zeev -- Zeev Suraski <zeev@zend.com> http://www.zend.com/