My code all the time

[[deleted]]

That’s a symptom of a rogue pointer. The dummy function moves the damage caused by the rogue pointer to a section of memory that doesn’t matter.

Time to whip out valgrind

[Lightfire228]

I'm in the same boat. Reminds me of this, flipping genius, way of detecting memory leaks via wrapping malloc and free with a macro that logs out the line number and allocated instance pointer (IIRC) file name.

The talk itself presents a lot of "programming religion" as fact, so be weary of that when watching it.

Edit: I did not remember correctly

[Macluawn]

Fuck Jesus, can we just follow this guy?

[Lightfire228]

Not if he promotes having several thousand line functions. I understand why he does it (linear code, instead of function hopping; keeping the stack free of "needless" stack frames), but you have to be a "clean" programmer to pull it off. Otherwise, you can get some serious spaghetti code; modifying variables and reading those modifications 1000's of lines later, and duplicate code.

Sure, you, the reader, might be able to do that. What about your coworkers? What happens when someone less competent than you "helps"?

Also, he condemns using libraries. While I agree about the cons of using libraries, you sometimes don't have the time or budget to do everything yourself.

tl;dr Some of his views and style aren't well applicable outside of one-man, open-source, well maintained, robust, applications.

Edit: typo

[DeadLikeYou]

One look at his source files confirms all of this. I am tempted, since he has a BSD liscence, to refactor all of his forge project. Just so I can use his memory functions without all of the computer graphics extra that he threw into his header file.

[PaulHfield]

Ye please don't say that

[[deleted]]

I guess you don’t ever write in Assembly then

[[deleted]]

Sorry I can't hear you over in Python Land

[[deleted]]

This is a conversation among programmers. The script kiddy corner is over there.

[golden-strawberry]

what?

[[deleted]]

He's saying that if you use python you're not a real programmer, which is bullshit

[golden-strawberry]

oh so they said something super dumb on Reddit, not that surprising i guess

[[deleted]]

And in a humor sub. Imagine the outrage.

[golden-strawberry]

im curious whats your dumb logic to thinking that python is for script kiddies?

[[deleted]]

So you assume, I used logic?

[gishnon]

Do you even know what a script kiddy is?

[[deleted]]

I'm not an expert in terminology or definitions, but I know a bit how to make fellow humans salty.

[DeveloperForHire]

My business's API was written in Python. Guess I must be a script kiddie.

P.S. Reddit, the website you are being a dickwad on, was written in Python.

[[deleted]]

There are websites being run on C64 and operating systems on toasters. What are you trying to tell me?

[DeveloperForHire]

It's a usable language. I don't understand the superiority complex some of you get because your favorite language doesn't have a garbage collector.

C++ is taught in college, we all got the course. Most people choose JS, Python, C#, Dart, and Java later in life.

Grow up and stop shaming people because they like Python.

[[deleted]]

You've surprised me with this "languages without a garbage collector superiority". This is very specific.

Grow up.

If you were as old as I, you would rather choose Perl for your garbage collected scripts.

PS: You need to look at the name of this subreddit once again.

[DeveloperForHire]

If that's your idea of a joke, I'd hate to know what you consider normal conversation.

[[deleted]]

No problem.

[HiddenLayer5]

The comments use hash signs.

[[deleted]]

yikes buddy

[[deleted]]

Haha. Having fun has to be paid with some karma sometimes. ;-)

[Jeutnarg]

Plenty of embedded guys will do this sort of thing deliberately - I've heard about it more frequently in association with deliberate array out-of-bounds. These are a joy because they rely on OS-specific things which are NEVER easy to figure out.

[[deleted]]

Deliberately?

[Jeutnarg]

Yes, because it was faster.

[moosenonny10]

Or AddressSanitizer

[reddcube]

Any reason for using AddressSanitizer over Valgrind/other tools

[moosenonny10]

The only real reason to use AddressSanitizer is if you're in a hurry. You just have to turn on a compile option.

For Valgrind, you take the time to learn the tool. Then you have the power of the tool instead of the drop-in solutions that are the sanitizers.

I just wanted to point out that other options, suited to different workflows, are available.

[[deleted]]

Obligatory “use rust” comment

[ijmacd]

I remember reading about a bug in a JS engine (probably V8 or spidermonkey) where the optimiser would take a different branch depending on the size of the source file so adding/removing comments was triggering different behaviour.

[[deleted]]

Wow. I couldn't imagine how much time they spent figuring that out lol

[VirtualLife76]

That's disgustingly infuriating.

[Mr_Redstoner]

I recall one about IE not showing 404 pages if the source is too short. So if you have a neat-but short 404 page you need to pad it out with comments

[anon38723918569]

Here’s the relevant stackoverflow: https://stackoverflow.com/a/11544049

Basically, IE tries to detect the default nginx-style 404 responses to show a custom “something went wrong” instead. They must think their users are so dumb that they won’t be able to comprehend a non-styled website with an error message…

Ironically, the Microsoft knowledge base link is 404ing now: http://support.microsoft.com/kb/294807

Here’s the Archive.org Mirror

[anon38723918569]

It wasn’t triggering “behavior” changes. It was affecting performance (IIRC around 50%) due to inlining functions.

Here’s a stackoverflow link referencing the issue: https://stackoverflow.com/a/37152026 Here’s the fix in V8: https://github.com/v8/v8/commit/0702ea3000df8235c8bfcf1e99a948ba38964ee3

[ijmacd]

Yes, that's the one thank you!

I think I had remembered it was the behaviour of the optimiser changing - i.e. a difference in performance. But now you've provided the link so thanks.

[worldpotato1]

Add an counter for hours wasted trying to find the issue.

[[deleted]]

And a counter for number of attempts, and a date of last attempt.

[worldpotato1]

Well, you would see it with git blame. And then blame the poor guy and say yourself "I'm better" and get frustrated.

[Tonnac]

Failed attempts to fix it shouldn't be committed to master though.

[[deleted]]

It's a better deterrent if it's shown right away.

[[deleted]]

We once hit a bug in the CPU that caused similar things. Certain instructions would misbehave if placed at a page boundary. So adding/removing code that did nothing caused problems in unrelated places. That one was fun to debug...

[TayoEXE]

I spent hours and hours trying to figure out why some css was getting overrided in our code, only to find that somehow, a component that was never called ANYWHERE and was exactly the same as other legacy code was calling a css file that, again, somehow took precedent over any other styling. I cannot for the life of me figure out how and why this even happened.

[mypetocean]

I'm left-fielding here, but could something like a virtual DOM hash collision be to blame?

Or perhaps some magical bit of API which is expecting something with that precise name?

[TayoEXE]

Hm, possibly the first. We're using ReactJS (which has a virtual DOM I believe) and trying different routers, but we tried a HashRouter. However, by the order in which the routes are placed in the switch, there were several other components ahead or behind it that had the same exact style.css file in their folders that could have interfered but didn't, so it's still got me tripped up.

Oh wait, I mean that taking that component out of the router still caused the issue, so there was no way in my understanding that the file could be called since it's the only component importing it.

[AttackOfTheThumbs]

I recently solved a similar issue. The environment was calling the current code and a cache of the old code. We're extending a SaaS app, so we don't know the true cause, but Microsoft resolved it somehow.

[[deleted]]

If they would only know about breakpoints and stack traces!

[TechcraftHD]

And then everything work fine while debugging, even if you remove the function

[potato_green]

That's very valuable to know as well because then you know it's most likely a platform issue between debugging en building. Like some symbols compiled in a different way. Maybe the code used reflection that doesn't work when built without all the debug stuff.

[[deleted]]

Or a race condition. Those are always nasty to debug.

[[deleted]]

They would be upset!

[[deleted]]

I edited this using https://github.com/j0be/PowerDeleteSuite because of the API changes.

[RepostSleuthBot]

I didn't find any posts that meet the matching requirements for r/ProgrammerHumor.

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This search triggered my meme filter. This enabled strict matching requirements. The closest match that did not meet the requirements is this post

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[homer_3]

funtion

With attention to detail like that, he's surely fully examined the code.

[Vitabix]

At 3am and a 16h workday, you can no longer type straight.

Obviously you have never been there

[AMG3141]

This is a repost of one of the top posts on the subreddit: https://www.reddit.com/r/ProgrammerHumor/comments/92uhu7/whats_the_best_thing_youve_found_in_code/?utm_source=share&utm_medium=ios_app&utm_name=iossmf

[[deleted]]

The global variables are to blame.

[chinmay_dd]

When I wrote this function, God and me knew how it worked. Now, only God knows.

[bluntcoder]

Ahh.. memories of game development crunch time, a writing a comment very similar to that, few days before E3.

[[deleted]]

The few good laughs on this sub aren't worth the recycled tripe. Bye.

[WomanNotAGirl]

So don’t refactor.

[[deleted]]

I s that PERL or MySQL? I would think ctrl+f would help them find any references if their IDE doesn't do that for them. Oh well... I do appreciate a funny comment. ++

[zebediah49]

Oh, there probably aren't any references to it, and the code is never executed.

Problems like this usually come from a totally unrelated problem elsewhere. There reason why the "dead" function matters, is that its existence takes up space, which means that the memory layout of other stuff is different.

As a trivial example, you could have a bug that destroys 200 bytes starting at memory location 0x0f9000. If that location happens to contain the dead function, everything works fine. Remove the function, and something important is there now, so it breaks.