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<karolherbst>
is there a great way to check for the existence of a C++ member function with meson?
<karolherbst>
guess I have to use compiles, because has_function doesn't seem to work for C++ member functions
<mceier>
maybe has_member works also for C++
<karolherbst>
mhhhh...
<karolherbst>
worth a try
<karolherbst>
error: invalid use of non-static member function :')
<mceier>
ok
<karolherbst>
one hack with has_function would be to do a `using namespace::class:member_function;` thing, but I think that's illegal
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<mceier>
how did you try has_member? meson tries to compile `void bar() { {typename} foo; foo.{member}; };` so you should use `function_name(args)` as a member instead of `function_name`
<karolherbst>
mhhhhhh
<karolherbst>
I guess?
<karolherbst>
let's see...
<karolherbst>
mceier: that seems to work
<mceier>
cool :)
<karolherbst>
I wonder what meson devs think of that :D
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<karolherbst>
I have a SPIR-V question. If you have a three component vector variable in the Input storage class, what's the expected behavior on out of bound reads?
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<karolherbst>
UB?
<karolherbst>
defined as per environment spec?
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<zmike>
env spec yes
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<sima>
jfalempe, for the fancy qr code, maybe a text hint which qr reader will work would be good on the panic screen?
<sima>
high-res qr code with full dmesg is great, but we need to make sure people can read it :-)
<karolherbst>
put in a second QR code to download the qr code reader :P
<sima>
qr codes all the way down
<sima>
should make the ascii art tux a qr code too with a link to full res one :-P
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<karolherbst>
anyway, free qr code reader is such a big bikeshed, because try to find one which you can generally advise to use, which isn't a huge piracy violation like most of them :P
<karolherbst>
*privacy
<sima>
I thought the bigger issue was that default QR codes only encode like 200 bytes or so
<sima>
and the high-res ones we need to put a good chunk of dmesg in it are a bit unusual
<emersion>
we don't upload the dmesg to a pastebin yet?
<emersion>
smh
<sima>
if you can do that reliably from nmi context, I'll retire
<karolherbst>
if network is down, just use the sound card to transmit data wireless, and if that doesn't work, there is probably also a CPU noise based exploit in the wild somewhere
<karolherbst>
just needs an app to recieve the data
<sima>
the problem with panic context is you get either lockless (as in try lockless, no retrying allowed) or raw_spin_trylock to synchronize with anything else
<sima>
stuff like lockless list walks with the nmi safe rcu variant for updates
<sima>
everything else is somewhere between undefined and "probably on fire"
<karolherbst>
the proper solution to all those issues is of course, that we just compress the data with xz and then have our "DRM blue screen QR reader" app on the stores (1.4/5 stars best rated comment: "DRM is cancer")
<sima>
I see the headline already
<sima>
xz embedded payload to exploit the kernel through the drm panic handler
<karolherbst>
owning an android device through a malicious drm panic handler QR code would indeed be impressive
<karolherbst>
looks like the scanner app I have can read those version 40 QR codes
<karolherbst>
soooo
<karolherbst>
I think we are fine
<sima>
oh I more meant a repeat of xz-utils vs openssh, except this time the kernel
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<karolherbst>
heh
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<sima>
agd5f, no -fixes pull this week or just not yet?