Following on the tails of my previous (answered) question...
SharpSvn makes calling the Subversion client API simple:
SvnClient client = new SvnClient();
client.Authentication.DefaultCredentials = new NetworkCredential(username, password);
client.CheckOut(new Uri("http://xxx.yyy.zzz.aaa/svn/repository"), workingCopyDir);
On the other hand, calling the client API from C/C++, as shown in minimal_client.c requires coding "closer to the metal", as it were, on Subversion.
Are there Windows libraries for C++ in Visual Studio 2003 that present a simpler interface than what minimal_client uses?
If there are not, is there a VS2003 C++ project (a .vcproj file) that demonstrates getting minimal_client to run? I'm able to compile minimal_client.c and link it using the following libraries:
libsvn_client-1.lib libsvn_delta-1.lib libsvn_diff-1.lib libsvn_fs-1.lib libsvn_fs_base-1.lib libsvn_fs_fs-1.lib libsvn_ra-1.lib libsvn_ra_local-1.lib libsvn_ra_svn-1.lib libsvn_repos-1.lib libsvn_subr-1.lib libsvn_wc-1.lib libapr-1.lib libaprutil-1.lib xml.lib libneon.lib
but when I run my application (in the debugger or start the release build without debugging), it runs for about 20 seconds without hitting the first line of main() and then throws this exception:
An unhandled exception of type
'System.TypeLoadException' occurred in
Unknown Module.
Additional information: Could not load
type apr_pool_t from assembly
minimal_client,
Version=1.0.3477.16033,
Culture=neutral, PublicKeyToken=null.
I've tried various combination of libsvn_.lib and svn_.lib to no avail.
Any thoughts on what I'm doing wrong?
EDIT: I started fresh with a "Win32 Console Project" (still in VS2003) and I am now able to debug the first few lines of my app. But now, on this line:
if (svn_cmdline_init ("minimal_client", stderr) != EXIT_SUCCESS)
I get a different exception (in the debugger or start the release build without debugging):
Unhandled exception at 0x7c91b21a in
Win32ConsoleProject_minimal_client.exe:
0xC0000005: Access violation writing
location 0x00000010.
EDIT: This thread explains that this error is a CRT mismatch between svn and stderr in my app. If I don't want to build Svn so they match (I don't want to), I can pass NULL instead of stderr (provided I'm willing to do without messages that would go to stderr) When I did this, my app ran all the way through correctly.
It seems that C++ wrappers are not overflowing the 'net. However, you may want to try SVNCPP, which can be yoinked from RapidSVN.
See http://rapidsvn.tigris.org/ for details (note: I've not tried it).
Can you upgrade to Visual C++ 2005 ? If so, you could just go using SharpSvn with C++/CLI.
Or even maybe stick to VC2003 and go SharpSvn with Managed C++ ? (not that I have any knowledge on the how od even the if)
edit: oh well, SharpSvn's homepage explicitely states that VC++ 2005 SP1 is required...
Related
I'm currently using Qt Creator 4.4.1 with Qt 5.9.2 and the MSVC 2015 32/64 Bit compilers to create a DLL on Windows 7.
In Qt Creator under
Projects -> Build & Run -> Desktop Qt 5.9.2 MSVC2015 xxbit -> Run -> Executable
I've specified the host application, that loads my DLL, so when I hit F5 this app gets executed and loads my DLL without a flaw.
However, on loading, the main app raises an exception which I have no hands-on, making Qt Creator showing up a message box with the following content:
The inferior stopped because it triggered an exception.
Stopped in thread 0 by: Exception at 0x60251637, code 0xc0000005: write access violation at: 0x1, flags=0x0 (first chance).
I now have to close the message box and hit F5 again to proceed.
Because I have to do this for every test run, again and again, it becomes really annoying. So, is there a simplest way to tell CDB from Qt Creator to ignore only that specific type of exception?
Look at the call stack, find the relevant code and see what it does. You should find a try ... catch ... around that line. See whether you can avoid the exception in some way, typically by introducing an if ... else ....
If you cannot avoid it, and you made sure it's really safe to ignore it, start CDB with command line argument -c "sxn c0000005" or the equivalent -c "sxn av", where AV is short for "access violation". You can use sx to see all exception settings.
I encountered the same problem, the problem may be caused by the variable is not initialized, for example:
QLable *lable;
If you forget to allocate memory for this variable, it will cause this error.
lable = new QLable(this);
I think you should check your variables.
I have recently started coding with C++ and I have come across a little source of error which I think requires knowledge about computers that I don't have.
When I write a simple code (in Visual Studio Express 2013), let's say a "Hello World!" example, I Build and Start Without Debugging successfuly.
Then, when I edit my code to print the sum of two numbers for example, I get an error when I try to Build. I get this error:
Error 1 error LNK1168: cannot open c:\users\name\documents\visual
studio 2013\Projects\ConsoleApplication4\Debug\ConsoleApplication4.exe
for writing
But if I wait for a bit and then re-attempt to Build, everything is fine.
I have also noticed this when I use g++ in the standard cmd module; if I try to complile a code under the same name (for the .exe file) I get an Access Denied error, but if I wait a bit I am allowed to do it.
My instincts tell me that the computer still has the .exe file running for a bit after I execute it, and it is not allowing me to overwrite it.
It's because the process is still running and therefore the file is in use and write-locked. It takes Windows a few tempo beats to clean everything up after you've terminated.
This is a very open ended question and I am really just looking for how to approach locating the issue.
The application runs for a day or so and then will crash while being used. The point in the application that it crashes is not the same each time. The memory that the application is using is not increasing.
C++ is not my standard dev language so any pointers would be appreciated.
The run time error I am given is detailed below. Having googled this I can see that 40000015 is a generic I don't know what has happened style error. Is there anyway I can use the additional information (1-4) to assist in locating the issue?
Any help is much appreciated!
Thanks
Problem signature:
Problem Event Name: APPCRASH
Application Name: Main.exe
Application Version: 1.1.10.0
Application Timestamp: 5278d640
Fault Module Name: MSVCR90.dll
Fault Module Version: 9.0.30729.4940
Fault Module Timestamp: 4ca2ef57
Exception Code: 40000015
Exception Offset: 0005beae
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 2057
Additional Information 1: 3793
Additional Information 2: 379382cf89267e4a4b730ab2a7cc6828
Additional Information 3: f05b
Additional Information 4: f05b042c097ccdb870355bd0f539be8d
Read our privacy statement online:
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I would start by running it under debugger and leave it running for a day. Remember to enable all exceptions to catch - in my VS 2005 its in Debug->Exceptions, add handler for 40000015 exception.
If you cannot run it under debugger, ie. it happens only on client PC (still you can use remote debugging), then you can implement exception hanlder using : AddVectoredExceptionHandler, then use StackWalk64 to log call stack. If you can compile with symbols, then such stack will contain full path to the source of exception. It will be inside MSVCR90.dll, but will originate probably somewhere in your code. If you cannot include symbols then you can always use .map files or windbg with locally stored .pdb files. Of course this is a lot of work especially if C++ is not your main language, so the first suggestion is the best for you.
Ok, you can also use MiniDumpWriteDump and then use windbg instead of StackWalk64.
I am busy converting by existing firebreath plugin here to use gpgme instead of making calls via the OS and the gpg binary.
I have managed to get the code to compile in windows using VS 2010 on a x32 system but after loading the plugin into chrome I can not access the npapi code at all. Even simple version calls fails.
When loading the plugin I get no visible errors but when using sawbuck log viewer for chrome I get the erorr messages below.
.\renderer\webplugin_delegate_proxy.cc 347 PluginMsg_Init returned false
..\plugins\npapi\webplugin_impl.cc 271 Couldn't initialize plug-in
I have tried to use my code with both firebreath 1.4 and 1.6 and neither versions work. After some simple debugging it seems that using any code provided by gpgme (whether its called or not) causes the plugin to break.
I came to this conclusion by doing the following.
Created a new project with firebreath (versions 1.4 and 1.6)
Add the gpgme.h headers to gmailGPGAPI.cpp and changed nothing else aside from adding the required reference paths to the project.
Build the project to create the dll (this generates the dll fine).
Replace the existing ddl in my project with the dll in step 2 and test it with the following piece of code
plugin = document.createElement('object'); plugin.id = 'plugin';
plugin.type = 'application/x-gmailtest';
document.body.appendChild(plugin);
console.log("my plugin returned: "+ plugin.valid);
console.log("my plugin returned: " + plugin.version);
This returns valid = true and the version returns what ever i set it to.
I then modified gmailGPGAPI.cpp to now return the gpg version by calling gpgme_check_version(NULL) in the version method. I used that method because its probably the simplest returning function that I could test with.
Build the plugin and copy dll to chrome extension as in step 3-4. The plugin builds fine again as expected.
Load the plugin and try to execute the code in step 4 at which point it now just returns undefined for any property or method i try to access on the plugin. No errors are printed to the console or anywhere else in chrome except for the error logged to sawbuck.
I have got no idea where to look or what to try since I cant seem to get an actionable error to work against. I have also reduced by test code to the point where its just a new project with a one line change to make it easier to find the problem.
I should note the code in the repo builds fine in linux/OSX and loads into chrome correctly so I know at some level my code does work.
Two possible paths:
You may have a DLL dependency that isn't available which keeps the plugin from loading; if you run regsvr32 on it in the state where it doesn't work on chrome, does it work?
Your plugin may be loading and then crashing. Start chrome with --plugin-startup-dialog and then when it pops up a dialog warning you that a plugin is about to be loaded attach to that process and see if the process crashes. At this point you can also set breakpoints to try to figure out how far it gets.
Double check your metadata in PluginConfig.cmake as well; sometimes unusual characters in some fields can cause issues like this.
I have a batch file that tries to compile a static library using Borland C++ Builder 6.0
It is called from Borland make (makefile created with bpr2mak) which is called from a .bat file (used to compile the whole project with Visual Studio and some Borland C++ Builder legacy projects), which is called from a bash shell script running inside Cygwin.
When I run the .bat file directly from a Cygwin shell, it runs OK, but when its being run from a Program calling cygwin with Boost::Process::launcher I'm getting this error:
C:\ARQUIV~1\Borland\CBUILD~1\Bin\..\BIN\TLib /u bclibs.lib #MAKE0000.###
DOS-reported error: Bad file number
TLIB 4.5 Copyright (c) 1987, 1999 Inprise Corporation
opening 'MAKE0000.###'
** error 1 ** deleting bclibs.lib
It's a complicated scenario, but this Program which calls cygwin is run whenever we need to build our software package which needs to be build for various Linux distos and Windows 32 and 64-bit.
Note: It's the only Borland Project failing, the other compile just fine (it's the only static library using borland also, so it can be some problem with the TLib tool.
The problem was that TLib does not like to have his output redirected (seen here) without having an input pipe as well. Solved by creating an input pipe to in the Boost::Process::launcher using set_stdin_behavior
I'm just guessing here, but this may have to do with long filenames and/or spaces in paths.
1) Modify your makefile so it would save current environment to a file, immediately before executing the failing command (set > d:\env.txt & echo CD=%CD% >> d:\env.txt). Then run it both ways (directly and via program) and compare the environments of good run and bad run.
2) Using filemon from Sysinternals, capture logs of disk access in both cases (these logs are going to be huge, though you can uncheck everything except Open in the filter to reduce the size). Again, compare and check for clues...
3) Try instaling everything involved to paths conforming to 8.3 scheme.
This error is not related to C++ itself. It happens when your build script opens too much files (more than defined in DOS command processor environment). To resolve this issue try to set value of files variable to 253. For Windows XP this variable defined in the file %WINDIR%\system32\config.nt.
files=253
Seems it is known bug in Borland C++ tools. Here is description and possible workaround for this issue:
Problem: Some static Lib projects will
not link correctly when compiled. You might see something
like this :
J:\Borland\CBUILD~1\bin\..\BIN\TLib /u debug\jpegD.lib #MAKE0000.###
DOS-reported error: Bad file number
TLIB 4.5 Copyright (c) 1987, 1999 Inprise Corporation
opening 'MAKE0000.###'
** error 1 ** deleting debug\jpegD.lib
MAKE failed, returned : 1
Workaround : In some cases (where the "Bad file number" error is seen) it may be possible to work around this by specifying -tDEFLIB.BMK in the BPR2MAKE Options field, and Turning off the "Capture Make Output" option.
I have not tested it, but I hope that helps.