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Type: Bug
Resolution: Cannot Reproduce
Priority: P2: Important
Fix Version/s: Qt Creator 4.6.0-beta1
Affects Version/s: Qt Creator 3.6.0-rc1, Qt Creator 3.6.0
Component/s: C/C++/Obj-C++ Support
Labels:
- Reported_by_support_standard
Environment:
I am on windows 7 and my project uses cmake. The source repository and the build repository are accessed through symbolic links.

Hello,

For the first time, I am testing clang code model with Qt Creator 3.6 rc1 (which seems very promising), and often I am not able to save a particular header file (.h). I have then the error message "not possible to save ..." ending by "Disk full ?". Each time I have the error, Qt Creator creates a backup of the header with a name having a number at the end ("XXX.h.F551256" for example).

When I look to the processes having a handle blocking the file, sometime there is only the qtcreator process, sometime there is the qtcreator and the clangBackend processes.

I then delete the handle(s) (with process sysinternals) and I can save the file.

This occurs only on header file, not on source file (.cpp).

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locked.png
75 kB
26 Jul '17 09:18
image-2017-07-07-14-49-41-108.png
10 kB
07 Jul '17 12:49
image-2017-07-07-14-37-46-541.png
16 kB
07 Jul '17 12:37
headers-as-dlls.png
62 kB
23 May '18 14:23
header-lock-4.8.png
5 kB
03 Dec '18 15:21
header-lock.zip
0.5 kB
03 Dec '18 13:05
header-handles.png
58 kB
28 Dec '17 06:28
clang-locks.png
42 kB
28 Nov '18 07:02

is duplicated by

QTCREATORBUG-15929 Clang backend blocks source file (cannot save)

Closed

QTCREATORBUG-15990 Unable to build or save edited file because clangbackend.exe is using it

Closed

QTCREATORBUG-16964 Sometimes clangbackend.exe gets stuck or is just very slow and blocks saving of the source file

Closed

QTCREATORBUG-17626 "Disk full" error message when saving file when using Clang Code Model

Closed

relates to

QTCREATORBUG-24911 [REG 4.13->4.14] Qt Creator locks header and source files

Closed

QTCREATORBUG-20870 (maybe crashed) clang code model locks source files

Closed

QTCREATORBUG-20540 Clangbackend uses huge amount of memory - multiple mapped files

Closed

QTCREATORBUG-19404 Research how to suspend/resume libclang to prevent file locks

Closed

links to

Clang mmap fix

(3 relates to, 1 links to)

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For Gerrit Dashboard: QTCREATORBUG-15449
#	Subject	Branch	Project	Status	CR	V
187694,2	Clang: Add patch against leaking file descriptors on windows	master	qt-creator/qt-creator	Status: MERGED	+2	0
198047,3	Utils: improve saving a file in windows	master	qt-creator/qt-creator	Status: ABANDONED	0	0
198849,3	Utils: improve failed file saving behavior	master	qt-creator/qt-creator	Status: MERGED	+2	0
199689,10	Clang: Add patch fixing locked files for windows	4.4	qt-creator/qt-creator	Status: MERGED	+2	0
213124,13	Utils: workaround for saving file opened by another application	master	qt-creator/qt-creator	Status: MERGED	+2	0
226474,1	Windows: Avoid file locking issues	release_60-based	clang/llvm	Status: ABANDONED	-1	0
230884,9	[backported/clang-7][Frontend] Honor UserFilesAreVolatile flag getting file buffer in ASTUnit	release_60-based	clang/clang	Status: MERGED	+2	0
233188,4	VcsCommand: Block auto reload while a command is running	4.7	qt-creator/qt-creator	Status: MERGED	+2	0
242442,8	Clang: Avoid starting backend jobs for inactive app and during VCS operations	4.8	qt-creator/qt-creator	Status: MERGED	+2	0