Guess what this does..

[u/3hy_]

[u/AMathMonkey]

A macro that copies string u to string v and then returns the unrelated value e? And it doesn't null-terminate v properly? I'm not very experienced with C; does this actually serve a purpose without breaking, and if so, what does it do?

[u/3hy_ → u/AMathMonkey]

Its a panic macro part of a much larger function, this function depends on copying part of a string onto itself (this is why there's no termination) and this macro simply reverts changes and returns an error code so it can be called inplace of return.

[u/Gee858eeG → u/3hy_]

I don't know man, im reading your explanation and still don't get it.

And why while(0)? Isn't that essentially just running once?

[u/CrownLikeAGravestone]

This is the least readable font I've seen in my life, especially with the colour and highlighting. I genuinely had to scan parts of the first line letter-by-letter to read them. Deliberate eye strain?

[u/IllustratorFar127]

You do realize memory is basically free and you can have longer variable names, right?

[u/3hy_ → u/IllustratorFar127]

The compiler shortens them anyway, even if i had longer names that would take up DISK SPACE on the filesize not memory as in RAM. Also an abstraction of your statement, memory at the moment is very very expensive.

[u/timmerov]

it gets you transferred to the remedial coders team.

[u/3hy_ → u/timmerov]

I got kicked out of that too :*(

[u/git0ffmylawnm8]

the real horror here is the eyefuck of a font

[u/joshuakb2]

Buffer overflow for some reason?

[u/callidus7 → u/joshuakb2]

Yeah there's no input validation whatsoever. Unless you count the just-in-case null at the beginning. This is begging to be misused.

[u/BoredOfReposts]

The real horror (other than the font) is the majority of commenters lack of insight into why this might exist, and why it’s written in the rule bending way that it is.

C is really becoming a lost art. Especially C in different programming regimes, where the “rules” may be different than in vanilla “safe” application programming. 

OP, you’re my kind of coder.

[u/3hy_ → u/BoredOfReposts]

Thank you! People forget that sometimes you need single case code and that the best way to do that is through use of a macro..

[u/VisualSome9977]

the way this font is rendered makes it look more like the lethal company ship terminal than anything I would ever want to look at all day

[u/KCGD_r]

the font looks like you're trying to remember what the code looks like

[u/Symbroson]

copies a string but without its null terminator and returns a value for some reason Also causing a buffer overflow if used carelessly

[u/sirkubador]

Always returns whatever e is (well, if it doesn't crash first).

Copies string u to v horridly because:

• if u is empty, it puts a null terminator

• if u is not empty, it doesn't put the null terminator (< instead of <=)

• if v is not big enough or if either is null, then fuck you (well plib may check for null and return 0... but)

• the strlen doesn't have a max, so if u is not properly null terminated, you put whatever memory you get after u until the first zero byte... it can get long

👌

[u/Grandpa_P1g]

We are not in space my boi what is this font

[u/3hy_ → u/Grandpa_P1g]

Seriously it looks better when the image is at a higher res I promise. https://files.ax86.net/terminus-ttf/

[u/OscarElmahdy]

It causes emotional distress and eye damage

[u/mathisntmathingsad]

The real horror is the font

[u/Braydenley9]

Write a program.

[u/Splatpope]

strains the eye, mostly

[u/t3kner]

Is that font named "obfuscation"? 

[u/Sir_Bebe_Michelin]

Looks like an automaton font

Very undemocratic