(Y2K, i.e. the “year 2000 problem”, affected two digit date formats. Nothing bad happened, but consensus nowadays is that that wasn’t because the issue was overblown, it’s because the issue was recognized and seriously addressed. Lots of already retired or soon retiring programmers came back to fix stuff in ancient software and made bank. In 2038, another very common date format will break. I’d say it’s much more common than 2 digit dates, but 2 digit dates may have been more common in 1985. It’s going to require a massive remediation effort and I hope AI-assisted static analysis will be viable enough to help us by then.)
My dad is a tech in the telecommunications industry. We basically didn’t see him for all of 1999. The fact that nothing happened is because of people working their assess off.
How much software is still running 32 bit binaries that won’t be recompiled because the source code has been lost together with the build instructions, the compiler, and the guy who knew how it worked?
How much software is using int32 instead of time_t, then casting/converting in various creative ways?
How many protocols, serialization formats and structs have 32 bit fields?
The most common date format used internally is “seconds since January 1st, 1970”.
In early 2038, the number of seconds will reach 2^31 which is the biggest number that fits in a certain (also very common) data type. Numbers bigger than that will be interpreted as negative, so instead of January 2038 it will be in December 1901 or so.
Why not just use unsigned int rather than signed int? We rarely have to store times before 1970 in computers and when we do we can just use a different format.
Y2038 is my “retirement plan”.
(Y2K, i.e. the “year 2000 problem”, affected two digit date formats. Nothing bad happened, but consensus nowadays is that that wasn’t because the issue was overblown, it’s because the issue was recognized and seriously addressed. Lots of already retired or soon retiring programmers came back to fix stuff in ancient software and made bank. In 2038, another very common date format will break. I’d say it’s much more common than 2 digit dates, but 2 digit dates may have been more common in 1985. It’s going to require a massive remediation effort and I hope AI-assisted static analysis will be viable enough to help us by then.)
My dad is a tech in the telecommunications industry. We basically didn’t see him for all of 1999. The fact that nothing happened is because of people working their assess off.
My dad still believes the entire Y2K problem was a scam. How do I convince him?
Well my dad does too and he worked his ass off to prevent it. Baby boomers are just stupid as shit, there’s not really much you can do.
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How many UNIX machines in production are still running on machines with 32-bit words, or using a 32-bit time_t?
How much software is still running 32 bit binaries that won’t be recompiled because the source code has been lost together with the build instructions, the compiler, and the guy who knew how it worked?
How much software is using int32 instead of time_t, then casting/converting in various creative ways?
How many protocols, serialization formats and structs have 32 bit fields?
Irrelevant. The question you should ask instead is: how many of those things will still be in use in 15 years.
I am taking the week off, family camping, and cell phones off for that week in 2038.
What is the basis for the 2038 problem?
The most common date format used internally is “seconds since January 1st, 1970”.
In early 2038, the number of seconds will reach 2^31 which is the biggest number that fits in a certain (also very common) data type. Numbers bigger than that will be interpreted as negative, so instead of January 2038 it will be in December 1901 or so.
Huh interesting. Why 2^31? I thought it was done in things like 2^32. We could have pushed this to 2106.
Signed integers. The number indeed goes to 2^32 but the second half is reserved for negative numbers.
With 8 bit numbers for simplicity:
0 means 0.
127 means 127 (last number before 2^(7)).
128 means -128.
255 means -1.
Why not just use unsigned int rather than signed int? We rarely have to store times before 1970 in computers and when we do we can just use a different format.