Daniel Lemire

icon indicating a website link http://lemire.me/en/ icon indicating an email [email protected]

icon company Université du Québec (TELUQ) icon location Montreal, Quebec, Canada icon location Daniel Lemire is a computer science professor. His research is on software performance in data engineering.

Results 1864 comments of Daniel Lemire

[WIP] Fuzzer for buffer overflow

Of course, it might be nice to know *which function* failed (e.g., given this input, and calling the transcoding function from UTF-8, we get an error).

[WIP] Fuzzer for buffer overflow

You can print to an existing buffer in C using `sprintf`: https://cplusplus.com/reference/cstdio/sprintf/ There is no need for a dynamic buffer if you know the size of the input since you...

[WIP] Fuzzer for buffer overflow

Don’t worry about the good old VS. I will investigate.

[WIP] Fuzzer for buffer overflow

@NicolasJiaxin I have solved the VS issue. It was a little nothing.

Write higher quality fuzzer

cc @NicolasJiaxin

Write higher quality fuzzer

Running an extensive fuzzer with `SIMDUTF_SANITIZE` set to on might reveal unknown bugs.

Write higher quality fuzzer

@NicolasJiaxin If you are interested, you could help find bugs... A fuzzer that catches buffer overflows would be fantastic. :-)

Write higher quality fuzzer

Note that we would not normally run it as part of our tests. It would be something that we let run for a long time with sanitizers on…

Port SIMD acceleration to POWER

@WojciechMula I do. Didn't I give you access? Anyhow. Yes. I do. POWER9. It was an expensive purchase. :-(

Port SIMD acceleration to POWER

I have begun the work. It not terribly difficult but it will require hours of work.