Qt Creator Clang Code Model problems collection

aha_1980

Clang is a double-sided sword. If it works, it gives you fantastic insight in your code - but if not, you often have no idea why.

I'd recommend you nevertheless to start an own discussion topic here, we might be able to help you get it at least running. Can you at least work on a small example project?

Also note that the CMake integration is in flow currently, so there might be regressions in .0 releases. You might want to try the last stable or the next snapshot release.

Regards

Edit: Ah, you alread did: https://forum.qt.io/topic/111067/symbols-parsing-and-finding-stops-working-qtcreator-v4-11-0-cmake-on-linux-x64

Neil9

When I just typed a few code in a c++ project,I got an error in the editor which was " no member named 'uint64_t' in namespace 'std' ".The code are listed here:

#include <iostream>
#include <cstdint>
using std::uint64_t

I didn't think it was the code made the issue.And I didn't know how to fix it until I found this topic.Actually,I solved the problem just by disabling Clang. It was really useful.

0...-5

I have upgraded QtCreator to version 6. When I opened my project session clangd run out of memory and crashed my system. Sometimes it just crashes QtCreator:

[12437.692439] Out of memory: Killed process 56361 (clangd.main) total-vm: 1033980kb, anon-ess: 564302kb, shmem-rss: 0kb, UID: 1000, pgtables: 1360kb, oom_score_adj: 0

Bollywoodcellebrite

This post is deleted!

maxim2511

Helo, I have also this same problem with clang. I like this plugin, because it shows me future errors before I will compile program, but I noticed issue with NO auto completion in brackets, I want to autocomplete overloaded function in child class, but this is not working, and then I need spend time to open base class and copy all inputs from virtual function.
Turn it of plugin, helps fixing that issue, but now I cant use clang compilation warnings.
I do not need turn of auto closing brackets to autocomplete inputs in side brackets. Only clang code model is somehow blocking autocompletion. Maybe another plugin is colliding with clang and maybe finding another plugin will fix that issue, and will allow to use again clang?

Joe McGuchan

Commenting to say that I had an issue that the above change also fixed.

I was receiving a repeated warning "definition of builtin function __cpuid", being caused by a file that I discovered was in clang, even though my project was meant to compile in msvc.

Thank you!

RangerQT

On Qt 6.4.x with Qt Creator 9.0.1 I'm seeing the slow as molasses response to keystrokes even with the ClangCodeModel disabled (I did restart but still no improvement. It's almost unusable as an editor since it is several - like five or six keystrokes behind and this on a pretty beefy machine.

Mehrshad

@aha_1980 Still the same problem in mid 2023, but only when using CMake. Why is that?

Omar Hatem

I am using qt-creator latest version (12.0.0) on ubuntu 20.0.4 LTS.
when using the default c++ code model and uncheck use clangd, I noticed that semantic issues and errors are not detected!
I must build the project to see the errors.
Any ideas how to fix the problem??

Mehrshad

@Omar-Hatem, what build system are you using and which version?

Serwus

This topic seems related, so I have a question. How can I disable adding automatic space in angle brackets so this:

object->findChild<QObject *>("abc");

Would look like this:

object->findChild<QObject*>("abc");

It's making me crazy, I couldn't find option for that anywhere.

andr

could we please "unpin" this thread? quite a few things mentioned here are not relevant anymore, and the prominent place has a tendency to end up as a dumping ground for not-so-related issues.