It's been a long time, but I'm pretty sure C treats a leading zero as octal in source code. PHP and Node definitely do. Yes, it's a bad convention. It's much worse if that's being done by a runtime function that parses user input, though. I'm pretty sure I've seen that somewhere in the past, but no idea where. Doesn't seem likely to be common.

[–] [email protected] 2 points 5 months ago (1 children)

PHP and Node definitely do.

Node doesn’t.

> parseInt('077')
77

If the input string, with leading whitespace and possible +/- signs removed, begins with 0x or 0X (a zero, followed by lowercase or uppercase X), radix is assumed to be 16 and the rest of the string is parsed as a hexadecimal number.

If the input string begins with any other value, the radix is 10 (decimal).

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/parseInt

[–] [email protected] 2 points 5 months ago (2 children)

You seem to have missed the important phrase "in source code", as well as the entire second part of my comment discussing that runtime functions that parse user input are different.

[–] [email protected] 1 points 4 months ago

You seem to have missed the important phrase “in source code”

I read that, but I thought it was a useless qualifier, because everything is source code. You probably meant “in a literal”.

[–] sukhmel 1 points 4 months ago* (last edited 4 months ago)

You can make user input source code with the power of eval or whatever it is called in your language of choice /s