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why use of size 0 or 1 array in structure for URI'S etc
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Join Date: Jun 2009
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#11 Oct 14th, 2009
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Now this will crash.
-Tommy (For Great Justice!) Gunn
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#12 Oct 14th, 2009
It's purely theoretical. You shouldn't have to compile it to see that it will crash.
The buffer will be filled with unknown data after the first two known values so the four bytes at BYTE *data will be some random value which surely will not be the desired pointer value.
The zero sized array version ->data member will always point to the next byte after the known values in the buffer.
The buffer will be filled with unknown data after the first two known values so the four bytes at BYTE *data will be some random value which surely will not be the desired pointer value.
The zero sized array version ->data member will always point to the next byte after the known values in the buffer.
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#13 Oct 14th, 2009
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You shouldn't have to compile it to see that it will crash.
-Tommy (For Great Justice!) Gunn
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#14 Oct 14th, 2009
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Originally Posted by Tom Gunn 
All I see is undefined behavior from using a bogus pointer. I have debugged many cases where the same problem does not crash, so your theoretical result does not mean anything unless you can back it up with empirical data. The problem is that saying things like this will crash gives beginners a false sense of security that the program will fail spectacularly if they do something wrong. It is just as probable that the program will fail silently and continue running until the damage done is very costly.
I will try to avoid that in the future. I forget that what's 'obvious' to me is not to every one
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