xcode 6Apple today released an updated version of Xcode, Xcode 9.3.1. The new version of Xcode comes over a month after the release of Xcode 9.3, which was launched alongside iOS 11.3 back in late March.

Xcode 9.3.1 is a minor bug fix update. According to Apple's release notes, it addresses an issue that could cause a user to have to log in with their Apple ID repeatedly and it fixes a bug that could cause Xcode to hang when using Playgrounds.

Xcode 9.3, the previous update, introduced a new Energy organizer designed to help developers detect when an app or app extension is using too much battery life on a user's device.

The software also brought a new 64-bit testing mode for macOS 10.13.4, which is designed to let developers test software for 64-bit compatibility as Apple prepares to start phasing out 32-bit Mac apps. As of Xcode 9.3, Xcode support for macOS 32-bit support has been depreciated.

Xcode 9.3.1 will be followed by Xcode 9.4, which is currently in beta testing. Apple has seeded two betas of Xcode 9.4 to developers thus far.

Top Rated Comments

hunt2013 Avatar
93 months ago
That goodness for the fix to Playgrounds crashing. It is hard to test stuff when it crashed every 5 minutes.
Score: 2 Votes (Like | Disagree)
Reason077 Avatar
93 months ago
Xcode really does crash a fair bit, doesn’t it.
Mines pretty stable so long as you stick to the code editors. But once you start messing around in Interface Builder, it can be a nightmare.
Score: 2 Votes (Like | Disagree)
chrono1081 Avatar
93 months ago
Finally fixed playgrounds! They're so useful and it sucks not having them.
[doublepost=1526048728][/doublepost]
How can I crash thee, let me count the ways... Xcode crashing is basically expected for me at this point, you just never know what's going to make it crash the next time.
I go months between crashes and I use it for at least 8 hours a day. I'm not sure how so many people are getting so many crashes. The only crashes I experienced frequently were not even crashes, but rather slowdowns and unresponsiveness in the playgrounds.

I'm not saying you're lying about the crashes, I'm rather just curious on why some people experience so many of them and what the common denominator among those experiencing crashes is.
Score: 1 Votes (Like | Disagree)
Markoth Avatar
93 months ago
That goodness for the fix to Playgrounds crashing. It is hard to test stuff when it crashed every 5 minutes.
How can I crash thee, let me count the ways... Xcode crashing is basically expected for me at this point, you just never know what's going to make it crash the next time.
Score: 1 Votes (Like | Disagree)
tzm41 Avatar
93 months ago
The Playgrounds are almost useless. Due to bugs and limitations, and I don't just mean the one they fixed, it's honestly faster in almost every case to use a fresh project.

Better yet, use React Native if you wanna quickly iterate with GUI. It's so much easier because you just write to the file, and it insta-updates so you can tweak things quickly instead of having to take forever rebuilding (Swift takes sooooo freaking long to build vs ObjC). That and the language and libraries are way easier to deal with for GUI. And I get to use Vim. Only thing is I feel dirty using Javascript.
[doublepost=1526196452][/doublepost]
No, mine crashes pretty rarely now. But... rant incoming... ever since the Swift update, it's been crappy in many other ways. Builds take forever. There are not-super-rare memory leaks. I used to get tons of segfaults IN THE COMPILER while compiling, and it still happens on rare occasions if I have a syntax error in some crazy thing involving generics. The debugger's variable inspection is broken af, like to the point where I can't expect anything to work, so I use print statements instead. The code completion used to also be broken, but now it works pretty reliably but often slowly.

Btw, Swift is a decent language and quite the engineering marvel, but there are some decisions they made that I can't fathom. String manipulation is unbelievably difficult, to the point where I've relied on custom solutions. Structs are very weird to work with, and pass-by-value arrays are a "wtf" kind of surprise to newbies. Syntax is weird and unintuitive in many places, especially code blocks.
Second the part with debugger variable inspection. I never use that crap anymore.
Score: 1 Votes (Like | Disagree)
tzm41 Avatar
93 months ago
Finally fixed playgrounds! They're so useful and it sucks not having them.
[doublepost=1526048728][/doublepost]

I go months between crashes and I use it for at least 8 hours a day. I'm not sure how so many people are getting so many crashes. The only crashes I experienced frequently were not even crashes, but rather slowdowns and unresponsiveness in the playgrounds.

I'm not saying you're lying about the crashes, I'm rather just curious on why some people experience so many of them and what the common denominator among those experiencing crashes is.
It definitely depends on the complexity of your project. It doesn't handle very large projects, or projects with a lot of RxSwift, or code that puts compiler's typer inference ability to test, very well. Also if there are some IBDesignables, IB crashes very often.
[doublepost=1526055140][/doublepost]
Except, when someone is using the Apple provided lessons in App Development with Swift (which Apple is promoting as the definitive teaching solution), the student has to use playgrounds for a majority of chapters.

I'm glad Apple fixed it.
[doublepost=1526053450][/doublepost]

I'm guessing here, but I'm betting this line from your signature has something to do with it: "Mac Pro (2010): 3.33Ghz Intel Xeon (6 core) - 24 GB RAM - NVidia Quadro k5000".

Before this latest bug, my 15" MacBook Pro had no issues, but my 13" MacBook Pro would hang from time to time.
For me, Xcode 9 itself probably only crashes once per week. I consider that huge improvement from 7 and 8. The crashes are mostly not due to the power of the machine though. Often times it's code editor trying to access an non existent line and causes index out of bounds, or some other cryptic crash on NSView loading frames.

IB engine crashes quite often, as well as compiler when I switch branches.
Score: 1 Votes (Like | Disagree)

Popular Stories

Apple Watch Ultra Night Mode Screen

Apple Watch Ultra 3 Launching Later This Year With Two Key Upgrades

Wednesday July 2, 2025 1:13 pm PDT by
The long wait for an Apple Watch Ultra 3 appears to be nearly over, and it is rumored to feature both satellite connectivity and 5G support. Apple Watch Ultra's existing Night Mode In his latest Power On newsletter, Bloomberg's Mark Gurman said that the Apple Watch Ultra 3 is on track to launch this year with "significant" new features, including satellite connectivity, which would let you...
iPhone 17 Pro in Hand Feature Lowgo

iPhone 17 Pro Max Battery Capacity Leaked

Thursday July 3, 2025 5:40 am PDT by
The iPhone 17 Pro Max will feature the biggest ever battery in an iPhone, according to the Weibo leaker known as "Instant Digital." In a new post, the leaker listed the battery capacities of the iPhone 11 Pro Max through to the iPhone 16 Pro Max, and added that the iPhone 17 Pro Max will feature a battery capacity of 5,000mAh: iPhone 11 Pro Max: 3,969mAh iPhone 12 Pro Max: 3,687mAh...
iPhone 17 Pro in Hand Feature Lowgo

iPhone 17 Pro Coming Soon With These 14 New Features

Friday July 4, 2025 1:05 pm PDT by
Apple's next-generation iPhone 17 Pro and iPhone 17 Pro Max are just over two months away, and there are plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models. Latest Rumors These rumors surfaced in June and July:Apple logo repositioned: Apple's logo may have a lower position on the back of the iPhone 17 Pro models, compared to previous...
iPhone 17 Pro Lower Logo Magsafe

iPhone 17 Pro's New MagSafe Design Revealed in Leaked Photo

Wednesday July 2, 2025 8:37 am PDT by
The upcoming iPhone 17 Pro and iPhone 17 Pro Max are rumored to have a slightly different MagSafe magnet layout compared to existing iPhone models, and a leaked photo has offered a closer look at the supposed new design. The leaker Majin Bu today shared a photo of alleged MagSafe magnet arrays for third-party iPhone 17 Pro cases. On existing iPhone models with MagSafe, the magnets form a...
airpods pro 2

AirPods Pro 3 to Help Maintain Apple's Place in Earbud Market Amid Increasing Low-Cost Competition

Thursday July 3, 2025 7:25 am PDT by
Apple's position as the dominant force in the global true wireless stereo (TWS) earbud market is expected to continue through 2025, according to Counterpoint Research. The forecast outlines a 3% year-over-year increase in global TWS unit shipments for 2025, signaling a transition from rapid growth to a more mature phase for the category. While Apple is set to remain the leading brand by...
Wi Fi WiFi General Feature

iOS 26 Adds a Useful New Wi-Fi Feature to Your iPhone

Wednesday July 2, 2025 6:36 am PDT by
iOS 26 and iPadOS 26 add a smaller yet useful Wi-Fi feature to iPhones and iPads. As spotted by Creative Strategies analyst Max Weinbach, sign-in details for captive Wi-Fi networks are now synced across iPhones and iPads running iOS 26 and iPadOS 26. For example, while Weinbach was staying at a Hilton hotel, his iPhone prompted him to fill in Wi-Fi details from his iPad that was already...
iOS 18

Apple Releases Second iOS 18.6 Public Beta

Tuesday July 1, 2025 10:19 am PDT by
Apple today seeded the second betas of upcoming iOS 18.6 and iPadOS 18.6 updates to public beta testers, with the betas coming just a day after Apple provided the betas to developers. Apple has also released a second beta of macOS Sequoia 15.6. Testers who have signed up for beta updates through Apple's beta site can download iOS 18.6 and iPadOS 18.6 from the Settings app on a compatible...