Segfault

[DalenW]

Here's what the debugger says:

[arthurlm]

Looking at the locals variables from your screen capture here is my guess on what happen:

1. i2 == 110
2. i2 / 10 == 11
3. i2 / 10 == b';' as u8 & 0x0F
4. i2 / 10 == line[line.len() - 3]
5. line.len() == 5
6. line[2] = b';'
7. line[4] = b'6' (because f=6)

So my guess is the input file you provide contains line with following format:

??;?6

As you can see, the parser I wrote rely a lot on unsafe code to strip out all check from the final x86 assembly.
Lines produced by the 1brc measures generator must respect the following regexp format:

\w+;-?\d{1,2}\.\d

Did you use the ./create_measurements.sh script provided in the official repository ? Or did you use another script to generate the input file ?

[DalenW]

Yeah I did use a different script to generate the file. My bad. I'll try to rerun it with the script you mentioned when I find a time to do so.