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Full Discussion: Why does this example C code run and yet SHOULD either not compile or give a segmentation fault?
Top Forums Programming Why does this example C code run and yet SHOULD either not compile or give a segmentation fault? Post 303033031 by Corona688 on Thursday 28th of March 2019 06:55:31 PM
Old 03-28-2019
Quote:
Originally Posted by wisecracker
IMO gcc should check for any assembly jumps outside the bounds of any individual function, irrespective of how one compiles it.
It's necessary sometimes, if you're building an operating system for example, to insert special instructions here and there without the compiler's interference. That's the kind of thing asm() is for. gcc will insert raw assembly if you ask, but you really have to know what you're doing since it can't protect you( though some more advanced syntax lets you warn gcc about side-effects instead). Plain, non-ASM goto (yes, it exists, very rarely used) wouldn't let you jump out of bounds.
This User Gave Thanks to Corona688 For This Post:
wisecracker
 

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