Why does this code crash Visual Studio 2015?

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP



Why does this code crash Visual Studio 2015?



For some reason, even so much as typing this into a C# file in Visual Studio is enough to cause it to instantly crash. Why?


unsafe struct node
node* child;



It seems to occur when the IDE would start coloring keywords and the like.



Trying it in TIO spits out csc.exe exited with code 1 which isn't very helpful.


csc.exe exited with code 1



While array declarations in C# are different than in C/C++, the above seems like it should be perfectly valid. Why isn't it, and why does it crash Visual Studio?



My Visual Studio version is 14.0.23107.





Confirmed, I pasted that code into VS2015 and it immediately froze, then crashed 20 seconds later. If you remove the , it can be safely copied into a VS code window. However, the moment you type the , VS crashes.
– Amy
Aug 7 at 17:51








VS 2012 produces a compile error: Cannot take the address of, get the size of, or declare a pointer to a managed type
– LarsTech
Aug 7 at 17:54


Cannot take the address of, get the size of, or declare a pointer to a managed type





VS2017 instantly, immediately closes
– Camilo Terevinto
Aug 7 at 17:55





Ditto LINQPad. StackoverflowException.
– Crowcoder
Aug 7 at 18:00





I found an existing bug: github.com/dotnet/roslyn/issues/24978
– Amy
Aug 7 at 18:22




1 Answer
1



This is a known bug in Roslyn. This bug will affect any version of Visual Studio that uses Roslyn.



If I am interpreting VersionOf.net correctly, the first version of Visual Studio with Roslyn built-in is 2015. Before then, I think it was available only as an extension. So, Visual Studio 2013 and prior should be unaffected.



It's due to be fixed in the milestone 16 release. At this time, that release is not scheduled.



Because this is a bug in Roslyn, you can "get around" it by editing and compiling the code containing the unsafe struct in an older version of Visual Studio, one that predates Roslyn. Visual Studio 2012 should work. You can then use the resultant .DLL in your current software.


unsafe struct



An unverified fix is available if you build Roslyn yourself from this branch. The fix was made in this commit.





according to this, you're qualifying for step number 3 or 4: meta.stackexchange.com/a/132704/382678 between awesome and legendary.
– Jean-François Fabre
Aug 7 at 19:49






nice move answering this properly: the question is probably in the 10k tools best questions of today. So here comes the 20k ;)
– Jean-François Fabre
Aug 7 at 19:50





@Jean-FrançoisFabre What is "10k tools best questions of today"?
– Amy
Aug 7 at 21:05





stackoverflow.com/tools. This question is indeed #1. seems that I was right :)
– Jean-François Fabre
Aug 7 at 21:06







By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

-

Popular posts from this blog

Firebase Auth - with Email and Password - Check user already registered

Image
Clash Royale CLAN TAG #URR8PPP Firebase Auth - with Email and Password - Check user already registered I want to check when a user attempts to signup with createUserWithEmailAndPassword() in Firebase user Authentication method, this user is already registered with my app. createUserWithEmailAndPassword() 8 Answers 8 To detect whether a user with that email address already exists, you can detect when the call to createUserWithEmailAndPassword () fails with auth/email-already-in-use . I see that @Srinivasan just posted an answer for this. createUserWithEmailAndPassword () auth/email-already-in-use Alternatively, you can detect that an email address is already used by calling fetchSignInMethodsForEmail() (previous called fetchProvidersForEmail() ). fetchSignInMethodsForEmail() fetchProvidersForEmail() When the user trying to create an user with same email address, the task response will be "Response: The email address is already in use by another account." mFirebas
Read more

Dynamically update html content plain JS

Image
Clash Royale CLAN TAG #URR8PPP Dynamically update html content plain JS So I have a script bound in my index.html, which literally has to fetch an array of jsons from an api, then dynamically update my page when get response. But as a result I'm getting an as the only update of my page. here is my script fetch(url) .then((resp) => resp.json()) .then((resp) => resp.results.forEach(item => fetch(item.url) .then((response)=> response.json()) .then((response) => pokeArr.push(response)) .catch(console.log) ) ).catch(console.log) const filler = () => if(!pokeArr) return 0 pokeArr.map((i,j)=> return `<tr>$i.name</tr>` ) const pokeindex = () => document.getElementById('a').appendChild(document.createElement(filler())) pokeindex() When I'm consoling it, I can see in the console all the responses I get, so I'm at least doing the fetching part right. What's parberakan ? What's pokeArr ? – T.J. Crowder Aug 8 at 12
Read more

How to determine optimal route across keyboard

Image
Clash Royale CLAN TAG #URR8PPP How to determine optimal route across keyboard I'm trying to automate the typing process in a video game. Players are given an on-screen QWERTY keyboard layout that they can navigate with the control stick (up, down, left, right) in order to select a letter to type. I was wondering if there was a module for Python (or some other resource I could explore) that would help my program find a path across the keyboard as it types each letter in a given message. In other words, if the first letter typed was "A" and the next letter was "B", the module would know that the program should move 1 space down on the keyboard and 4 spaces to the right. Currently, I have the program resetting to the "G" key after each letter is typed (allowing me to use fixed-directions as the program parses each character in the desired message). As you can imagine, this is quite inefficient and defeats the purpose of automating the typing in the fir
Read more