[lug] A head scratcher for your weekend

[Matt Bidwell]

Endianess aside, I have a cause... finally. From here: 
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=895718
"We discussed this on #debian-reproducible today and finally found the 
reason:
Qt 5.10 started using the getrandom(2) syscall which was introduced in 
Linux 3.17."

This is some old hardware I've not been able to boot OS provided kernels 
after 3.16.5-3. So maybe I'll download some kernel source see how that 
works. I guess I only need to get to 3.17.
Thanks everyone... what a wild and crazy week, the highs, the lows...

Matt

On 05/24/2018 06:29 PM, Zan Lynx wrote:
> On 5/24/2018 8:15 AM, Rob Nagler wrote:
>>
>> I hate little endian machines. They make no sense.
> 
> Ah but they do. It took me a while to get it myself, but here is the trick.
> 
> If you store the value 3 in big endian it looks like this in a hex dump:
> 00 00 00 03
> 
> In little endian it looks like:
> 03 00 00 00
> 
> The goodness of little endian comes in when you read the value using 
> different width instructions. Because 03 00 00 00 is the same number at 
> 16 bits 03 00 and 8 bits 03.
> 
> While with big endian the pointer must be shifted over for different 
> width access.
> 
> If you're building a RISC system where absolutely every memory access is 
> 32-bits or 64-bits and anything smaller is done with shift/mask, then 
> big endian is OK. Otherwise it is annoying.
> 
>