[En-Nut-Discussion] Just a word of warning with WinAVR-20050214.

[Ole Reinhardt]

Hi Vesa,

> If we think about AHDLC's ioctl handler, at variable declarations it 
> have already referenced that data pointer. In case it was NULL it reads 
> four bytes from memory location 0. And this allowed GCC to optimize NULL 
> pointer check out of the picture.

Could you please point me out a bit more detailed in whitch cases 
avr-gcc optimizes out NULL pointer checks? I use them quite often in 
some of my code...

Best regards,

Ole Reinhardt

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