whitequark

whitequark, 11 days ago to random

why do they call it Synplify if it usually makes your life more complex

i should write a synthesizer called Conplyxify

whitequark, 11 days ago to random

presses the Attention Button on your PCIe slot
presses the Attention Button on your PCIe slot
presses the Attention Button on your PCIe slot
presses the Attention Button on your PCIe slot

whitequark, 11 days ago to random

if your language has /* */ style comments and they don't nest you're going to hell

whitequark, 11 days ago to random

i love thinking rocks

fasterthanlime, 12 days ago to random

asking LLMs to do the lord's work:

it rewrote it to 1 << 24

mcc, 12 days ago to random

I wish Audacity were better than it is

whitequark, 12 days ago to random

i just need to reach L0

whitequark, 13 days ago to random

normal device

whitequark, 13 days ago to random

you should probably stop updating Chrome after 2025 :) https://blog.chromium.org/2024/05/manifest-v2-phase-out-begins.html

whitequark, 13 days ago to random

i think i need a cane

i have trouble standing for more than 10-15 minutes, even that is difficult

azonenberg, 13 days ago to random

Not sure if this is a gcc bug or some weird corner of UB or what...

But I have a packed struct containing a uint32 as the first field. I'm running on ARMv7-M so 32-bit unaligned loads are allowed (but not 64-bit).

This struct is being read directly via casting from a network RX buffer that is likely not aligned to any particular byte boundary. It's a) packed and b) has 32-bit fields in it.

So silly me assumed that gcc would generate either bytewise reads (assuming no alignment at all) or a ldr instruction (accepting that 32-bit unaligned loads are OK).

But for some reason at -O3 it generates a 64-bit read with ldrd, which promptly hard faults. I have no idea why it's doing that given that I was just __builtin_bswap32'ing a single 32-bit field.

Was able to work around the issue with memcpy, but seriously WTF? If I'm using a packed struct I'm explicitly telling the compiler not to make any assumptions about alignment because I'm directly serializing the data from somewhere. Where did it magically get the idea that my packed 32-bit field had 64-bit alignment?

whitequark, 13 days ago to random

i'm sorry... why does my laptop include a schematic sheet for smokeless powder?

whitequark, 13 days ago to random

where in the UK would i have a type-C connector on a laptop motherboard swapped?

I need it to be done within 1-2 days