digitalmars.D.learn - global static pointer variable in DLL

Zarathustra (9/9) May 17 2008 I have a C DLL whih global static pointer variables.

torhu (8/19) May 17 2008 It's a bit hard to know what the problem is when you don't post some

Zarathustra (9/33) May 17 2008 gl2ps is not exported because it is not necessary beyond DLL.

torhu (4/27) May 17 2008 When you say 'crash', do you mean that gl2ps is NULL on line 11 of the

Zarathustra (50/79) May 18 2008 Oh, I find out something.

torhu (4/56) May 18 2008 Have you tried debugging this code with ddbg, and checked what the

Bill Baxter (6/41) May 17 2008 You might be interested in my Frankenstein's hybrid of gl2ps and OGLE.

Zarathustra (3/46) May 18 2008 It sounds good.

Bill Baxter (11/56) May 18 2008 Just something I whipped up because I needed it. There's no docs or

Zarathustra (9/67) May 25 2008 I converted all gl2ps code to d and then started debugging with ddbg.
Zarathustra (9/67) May 25 2008 I converted all gl2ps code to d and then started debugging with ddbg.

torhu (5/79) May 25 2008 Does it crash on the malloc line? Maybe you've got heap corruption.

Zarathustra (22/102) May 25 2008 Ok I resolved this problem by change std.c.stdlib.malloc on std.gc.mallo...

Koroskin Denis (7/34) May 25 2008 , =

Zarathustra (3/36) May 25 2008 Why Do you think that? When I shorten string then error don't occur. The...

Zarathustra <adam.chrapkowski gmail.com> writes:

I have a C DLL whih global static pointer variables.
When I use this DLL with C everything is ok, but when I try to use it (DLL)
with D I receive Acces Violation errors.
I do not have any idea what is wrong. If something is inexplicable, You will
ask. Please help.

simple example code in dll
gl2ps is global pointer
[code]
if(gl2ps){/* 
never true in C but true in D*/}
[/code]

May 17 2008

torhu <no spam.invalid> writes:

Zarathustra wrote:
 I have a C DLL whih global static pointer variables.
 When I use this DLL with C everything is ok, but when I try to use it (DLL)
with D I receive Acces Violation errors.
 I do not have any idea what is wrong. If something is inexplicable, You will
ask. Please help.
 
 simple example code in dll
 gl2ps is global pointer
 [code]
 if(gl2ps){/* 
 never true in C but true in D*/}
 [/code]
 

It's a bit hard to know what the problem is when you don't post some 
more code.  How do you declare gl2ps in D?  If it's in a C DLL, it 
should look like this:

export extern extern (C) void* gl2ps;

Replace void* with the correct type, of course.

And in the C code IIRC it should be:

__declspec(dllexport) void* gl2ps;

May 17 2008

Zarathustra <adam.chrapkowski gmail.com> writes:

torhu Wrote:

 Zarathustra wrote:
 I have a C DLL whih global static pointer variables.
 When I use this DLL with C everything is ok, but when I try to use it (DLL)
with D I receive Acces Violation errors.
 I do not have any idea what is wrong. If something is inexplicable, You will
ask. Please help.
 
 simple example code in dll
 gl2ps is global pointer
 [code]
 if(gl2ps){/* 
 never true in C but true in D*/}
 [/code]
 

 
 It's a bit hard to know what the problem is when you don't post some 
 more code.  How do you declare gl2ps in D?  If it's in a C DLL, it 
 should look like this:
 
 export extern extern (C) void* gl2ps;
 
 Replace void* with the correct type, of course.
 
 And in the C code IIRC it should be:
 
 __declspec(dllexport) void* gl2ps;

gl2ps is not exported because it is not necessary beyond DLL.
gl2ps declaration in DLL is following:
static GL2PScontext *gl2ps = NULL;
for example:
The crash occurs in exported gl2psBeginPage function. (in attachment)
Declaration of above function in D is following:
extern (C) GLint gl2psBeginPage;	// static linking

DLL is little long but very simple, so I can send it to you.

May 17 2008

torhu <no spam.invalid> writes:

Zarathustra wrote:
 torhu Wrote:
 
 Zarathustra wrote:
 I have a C DLL whih global static pointer variables.
 When I use this DLL with C everything is ok, but when I try to use it (DLL)
with D I receive Acces Violation errors.
 I do not have any idea what is wrong. If something is inexplicable, You will
ask. Please help.
 
 simple example code in dll
 gl2ps is global pointer
 [code]
 if(gl2ps){/* 
 never true in C but true in D*/}
 [/code]
 



 gl2ps is not exported because it is not necessary beyond DLL.
 gl2ps declaration in DLL is following:
 static GL2PScontext *gl2ps = NULL;
 for example:
 The crash occurs in exported gl2psBeginPage function. (in attachment)
 Declaration of above function in D is following:
 extern (C) GLint gl2psBeginPage;	// static linking
 
 DLL is little long but very simple, so I can send it to you.

When you say 'crash', do you mean that gl2ps is NULL on line 11 of the 
attached file?    Then the problem is likely be in the code that 
initializes gl2ps, not in the gl2psBeginPage function.

May 17 2008

Zarathustra <adam.chrapkowski gmail.com> writes:

torhu Wrote:

 Zarathustra wrote:
 torhu Wrote:
 
 Zarathustra wrote:
 I have a C DLL whih global static pointer variables.
 When I use this DLL with C everything is ok, but when I try to use it (DLL)
with D I receive Acces Violation errors.
 I do not have any idea what is wrong. If something is inexplicable, You will
ask. Please help.
 
 simple example code in dll
 gl2ps is global pointer
 [code]
 if(gl2ps){/* 
 never true in C but true in D*/}
 [/code]
 



 
 gl2ps is not exported because it is not necessary beyond DLL.
 gl2ps declaration in DLL is following:
 static GL2PScontext *gl2ps = NULL;
 for example:
 The crash occurs in exported gl2psBeginPage function. (in attachment)
 Declaration of above function in D is following:
 extern (C) GLint gl2psBeginPage;	// static linking
 
 DLL is little long but very simple, so I can send it to you.

 
 When you say 'crash', do you mean that gl2ps is NULL on line 11 of the 
 attached file?    Then the problem is likely be in the code that 
 initializes gl2ps, not in the gl2psBeginPage function.

Oh, I find out something.
The most crashes occur in similar calls (in DLL) like following:
________________________________________________________
offs += fprintf(gl2ps->stream, "%%PDF-1.4\n");
________________________________________________________
it looks like DLL haven't got access to FILE(gl2ps->stream), but why?
The FILE is operand of gl2psBeginPage.
Call of gl2psBeginPage function in my D code is in following function:
________________________________________________________
extern (C) void
SaveFile(){
	FILE* fp;
	int state = GL2PS_OVERFLOW;
	int buffsize = 0;
            		
	try{
		fp = fopen("out.pdf", "wb");
		while(state == GL2PS_OVERFLOW){
			buffsize += 1024*1024;

			gl2psBeginPage(
				"test", 
				"gl2psTestSimple", 
				null, 
				GL2PS_PDF, 
				GL2PS_SIMPLE_SORT,
				GL2PS_DRAW_BACKGROUND | GL2PS_USE_CURRENT_VIEWPORT,
				GL_RGBA, 
				0, 
				null, 
				0, 
				0, 
				0, 
				buffsize, 
				fp, 
				"out.pdf"
			);
			
			RenderFrame();
			state = gl2psEndPage();
		}
		fclose(fp);
		MessageBoxA(null, "File saved", "Information", MB_OK | MB_ICONINFORMATION);
	}
	catch(Object o){
		MessageBoxA(null, cast(char*)o.toString(), "Critical Error", MB_OK |
MB_ICONERROR);
	}
}
________________________________________________________
exactly: gl2ps->stream = fp;

May 18 2008

torhu <no spam.invalid> writes:

Zarathustra wrote:
 
 Oh, I find out something.
 The most crashes occur in similar calls (in DLL) like following:
 ________________________________________________________
 offs += fprintf(gl2ps->stream, "%%PDF-1.4\n");
 ________________________________________________________
 it looks like DLL haven't got access to FILE(gl2ps->stream), but why?
 The FILE is operand of gl2psBeginPage.
 Call of gl2psBeginPage function in my D code is in following function:
 ________________________________________________________
 extern (C) void
 SaveFile(){
 	FILE* fp;
 	int state = GL2PS_OVERFLOW;
 	int buffsize = 0;
             		
 	try{
 		fp = fopen("out.pdf", "wb");
 		while(state == GL2PS_OVERFLOW){
 			buffsize += 1024*1024;
 
 			gl2psBeginPage(
 				"test", 
 				"gl2psTestSimple", 
 				null, 
 				GL2PS_PDF, 
 				GL2PS_SIMPLE_SORT,
 				GL2PS_DRAW_BACKGROUND | GL2PS_USE_CURRENT_VIEWPORT,
 				GL_RGBA, 
 				0, 
 				null, 
 				0, 
 				0, 
 				0, 
 				buffsize, 
 				fp, 
 				"out.pdf"
 			);
 			
 			RenderFrame();
 			state = gl2psEndPage();
 		}
 		fclose(fp);
 		MessageBoxA(null, "File saved", "Information", MB_OK | MB_ICONINFORMATION);
 	}
 	catch(Object o){
 		MessageBoxA(null, cast(char*)o.toString(), "Critical Error", MB_OK |
MB_ICONERROR);
 	}
 }
 ________________________________________________________
 exactly: gl2ps->stream = fp;
 

Have you tried debugging this code with ddbg, and checked what the 
actual values of gl2ps and gl2ps->stream are when it crashes?

http://ddbg.mainia.de/

May 18 2008

Bill Baxter <dnewsgroup billbaxter.com> writes:

Zarathustra wrote:
 torhu Wrote:
 
 Zarathustra wrote:
 I have a C DLL whih global static pointer variables.
 When I use this DLL with C everything is ok, but when I try to use it (DLL)
with D I receive Acces Violation errors.
 I do not have any idea what is wrong. If something is inexplicable, You will
ask. Please help.

 simple example code in dll
 gl2ps is global pointer
 [code]
 if(gl2ps){/* 
 never true in C but true in D*/}
 [/code]

 It's a bit hard to know what the problem is when you don't post some 
 more code.  How do you declare gl2ps in D?  If it's in a C DLL, it 
 should look like this:

 export extern extern (C) void* gl2ps;

 Replace void* with the correct type, of course.

 And in the C code IIRC it should be:

 __declspec(dllexport) void* gl2ps;

 
 gl2ps is not exported because it is not necessary beyond DLL.
 gl2ps declaration in DLL is following:
 static GL2PScontext *gl2ps = NULL;
 for example:
 The crash occurs in exported gl2psBeginPage function. (in attachment)
 Declaration of above function in D is following:
 extern (C) GLint gl2psBeginPage;	// static linking
 
 DLL is little long but very simple, so I can send it to you.

You might be interested in my Frankenstein's hybrid of gl2ps and OGLE. 
It allows basically allows you to do what gl2ps does, but 
non-invasively.  I.e. you can gl2ps an OpenGL screen without modifying 
any source code.

--bb

May 17 2008

Zarathustra <adam.chrapkowski gmail.com> writes:

Bill Baxter Wrote:

 Zarathustra wrote:
 torhu Wrote:
 
 Zarathustra wrote:
 I have a C DLL whih global static pointer variables.
 When I use this DLL with C everything is ok, but when I try to use it (DLL)
with D I receive Acces Violation errors.
 I do not have any idea what is wrong. If something is inexplicable, You will
ask. Please help.

 simple example code in dll
 gl2ps is global pointer
 [code]
 if(gl2ps){/* 
 never true in C but true in D*/}
 [/code]

 It's a bit hard to know what the problem is when you don't post some 
 more code.  How do you declare gl2ps in D?  If it's in a C DLL, it 
 should look like this:

 export extern extern (C) void* gl2ps;

 Replace void* with the correct type, of course.

 And in the C code IIRC it should be:

 __declspec(dllexport) void* gl2ps;

 
 gl2ps is not exported because it is not necessary beyond DLL.
 gl2ps declaration in DLL is following:
 static GL2PScontext *gl2ps = NULL;
 for example:
 The crash occurs in exported gl2psBeginPage function. (in attachment)
 Declaration of above function in D is following:
 extern (C) GLint gl2psBeginPage;	// static linking
 
 DLL is little long but very simple, so I can send it to you.

 
 You might be interested in my Frankenstein's hybrid of gl2ps and OGLE. 
 It allows basically allows you to do what gl2ps does, but 
 non-invasively.  I.e. you can gl2ps an OpenGL screen without modifying 
 any source code.
 
 --bb

It sounds good.
Could You tell something more about your Frankenstein's hybrid? Where can i
find more information about it?

May 18 2008

Bill Baxter <dnewsgroup billbaxter.com> writes:

Zarathustra wrote:
 Bill Baxter Wrote:
 
 Zarathustra wrote:
 torhu Wrote:

 Zarathustra wrote:
 I have a C DLL whih global static pointer variables.
 When I use this DLL with C everything is ok, but when I try to use it (DLL)
with D I receive Acces Violation errors.
 I do not have any idea what is wrong. If something is inexplicable, You will
ask. Please help.

 simple example code in dll
 gl2ps is global pointer
 [code]
 if(gl2ps){/* 
 never true in C but true in D*/}
 [/code]

 It's a bit hard to know what the problem is when you don't post some 
 more code.  How do you declare gl2ps in D?  If it's in a C DLL, it 
 should look like this:

 export extern extern (C) void* gl2ps;

 Replace void* with the correct type, of course.

 And in the C code IIRC it should be:

 __declspec(dllexport) void* gl2ps;

 gl2ps is not exported because it is not necessary beyond DLL.
 gl2ps declaration in DLL is following:
 static GL2PScontext *gl2ps = NULL;
 for example:
 The crash occurs in exported gl2psBeginPage function. (in attachment)
 Declaration of above function in D is following:
 extern (C) GLint gl2psBeginPage;	// static linking

 DLL is little long but very simple, so I can send it to you.

 You might be interested in my Frankenstein's hybrid of gl2ps and OGLE. 
 It allows basically allows you to do what gl2ps does, but 
 non-invasively.  I.e. you can gl2ps an OpenGL screen without modifying 
 any source code.

 --bb

 It sounds good.
 Could You tell something more about your Frankenstein's hybrid? Where can i
find more information about it?

Just something I whipped up because I needed it.  There's no docs or 
anything at this point (though OGLE, which it is based on can be found 
here: http://ogle.eyebeamresearch.org/

Put the OpenGL32.dll from in this zip into your program's exe dir
http://www.billbaxter.com/etc/GLGrabber-2008-02-02.zip

And copy a gliconfig.ini from in there to your exe dir too.  Read the 
gliconfig.ini for some info.  I think by default Ctrl-Shift-F12 is the 
screen-grab-to-svg keystroke.  You can change the settings in 
gliConfig.ini to save to PS if you prefer.

--bb

May 18 2008

Zarathustra <adam.chrapkowski gmail.com> writes:

torhu Wrote:

 Zarathustra wrote:
 
 Oh, I find out something.
 The most crashes occur in similar calls (in DLL) like following:
 ________________________________________________________
 offs += fprintf(gl2ps->stream, "%%PDF-1.4\n");
 ________________________________________________________
 it looks like DLL haven't got access to FILE(gl2ps->stream), but why?
 The FILE is operand of gl2psBeginPage.
 Call of gl2psBeginPage function in my D code is in following function:
 ________________________________________________________
 extern (C) void
 SaveFile(){
 	FILE* fp;
 	int state = GL2PS_OVERFLOW;
 	int buffsize = 0;
             		
 	try{
 		fp = fopen("out.pdf", "wb");
 		while(state == GL2PS_OVERFLOW){
 			buffsize += 1024*1024;
 
 			gl2psBeginPage(
 				"test", 
 				"gl2psTestSimple", 
 				null, 
 				GL2PS_PDF, 
 				GL2PS_SIMPLE_SORT,
 				GL2PS_DRAW_BACKGROUND | GL2PS_USE_CURRENT_VIEWPORT,
 				GL_RGBA, 
 				0, 
 				null, 
 				0, 
 				0, 
 				0, 
 				buffsize, 
 				fp, 
 				"out.pdf"
 			);
 			
 			RenderFrame();
 			state = gl2psEndPage();
 		}
 		fclose(fp);
 		MessageBoxA(null, "File saved", "Information", MB_OK | MB_ICONINFORMATION);
 	}
 	catch(Object o){
 		MessageBoxA(null, cast(char*)o.toString(), "Critical Error", MB_OK |
MB_ICONERROR);
 	}
 }
 ________________________________________________________
 exactly: gl2ps->stream = fp;
 

 
 Have you tried debugging this code with ddbg, and checked what the 
 actual values of gl2ps and gl2ps->stream are when it crashes?
 
 http://ddbg.mainia.de/

I converted all gl2ps code to d and then started debugging with ddbg.
I have got a problem with allocating memory. I have got the following code:

if(gl2ps.bgcolor is cast(GL2PSrgba*)null){
    gl2ps.bgcolor = cast(GL2PSrgba*)malloc(GL2PSrgba.sizeof);
}

and error:
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at
?Alloc RTLPool  QAEPAXXZ (0x0042e8a9) thread(5368)

I don't know what does it mean.

May 25 2008

Zarathustra <adam.chrapkowski gmail.com> writes:

torhu Wrote:

 Zarathustra wrote:
 
 Oh, I find out something.
 The most crashes occur in similar calls (in DLL) like following:
 ________________________________________________________
 offs += fprintf(gl2ps->stream, "%%PDF-1.4\n");
 ________________________________________________________
 it looks like DLL haven't got access to FILE(gl2ps->stream), but why?
 The FILE is operand of gl2psBeginPage.
 Call of gl2psBeginPage function in my D code is in following function:
 ________________________________________________________
 extern (C) void
 SaveFile(){
 	FILE* fp;
 	int state = GL2PS_OVERFLOW;
 	int buffsize = 0;
             		
 	try{
 		fp = fopen("out.pdf", "wb");
 		while(state == GL2PS_OVERFLOW){
 			buffsize += 1024*1024;
 
 			gl2psBeginPage(
 				"test", 
 				"gl2psTestSimple", 
 				null, 
 				GL2PS_PDF, 
 				GL2PS_SIMPLE_SORT,
 				GL2PS_DRAW_BACKGROUND | GL2PS_USE_CURRENT_VIEWPORT,
 				GL_RGBA, 
 				0, 
 				null, 
 				0, 
 				0, 
 				0, 
 				buffsize, 
 				fp, 
 				"out.pdf"
 			);
 			
 			RenderFrame();
 			state = gl2psEndPage();
 		}
 		fclose(fp);
 		MessageBoxA(null, "File saved", "Information", MB_OK | MB_ICONINFORMATION);
 	}
 	catch(Object o){
 		MessageBoxA(null, cast(char*)o.toString(), "Critical Error", MB_OK |
MB_ICONERROR);
 	}
 }
 ________________________________________________________
 exactly: gl2ps->stream = fp;
 

 
 Have you tried debugging this code with ddbg, and checked what the 
 actual values of gl2ps and gl2ps->stream are when it crashes?
 
 http://ddbg.mainia.de/

I converted all gl2ps code to d and then started debugging with ddbg.
I have got a problem with allocating memory. I have got the following code:

if(gl2ps.bgcolor is cast(GL2PSrgba*)null){
    gl2ps.bgcolor = cast(GL2PSrgba*)malloc(GL2PSrgba.sizeof);
}

and error:
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at
?Alloc RTLPool  QAEPAXXZ (0x0042e8a9) thread(5368)

I don't know what does it mean.

May 25 2008

torhu <no spam.invalid> writes:

Zarathustra wrote:
 torhu Wrote:
 
 Zarathustra wrote:
 
 Oh, I find out something.
 The most crashes occur in similar calls (in DLL) like following:
 ________________________________________________________
 offs += fprintf(gl2ps->stream, "%%PDF-1.4\n");
 ________________________________________________________
 it looks like DLL haven't got access to FILE(gl2ps->stream), but why?
 The FILE is operand of gl2psBeginPage.
 Call of gl2psBeginPage function in my D code is in following function:
 ________________________________________________________
 extern (C) void
 SaveFile(){
 	FILE* fp;
 	int state = GL2PS_OVERFLOW;
 	int buffsize = 0;
             		
 	try{
 		fp = fopen("out.pdf", "wb");
 		while(state == GL2PS_OVERFLOW){
 			buffsize += 1024*1024;
 
 			gl2psBeginPage(
 				"test", 
 				"gl2psTestSimple", 
 				null, 
 				GL2PS_PDF, 
 				GL2PS_SIMPLE_SORT,
 				GL2PS_DRAW_BACKGROUND | GL2PS_USE_CURRENT_VIEWPORT,
 				GL_RGBA, 
 				0, 
 				null, 
 				0, 
 				0, 
 				0, 
 				buffsize, 
 				fp, 
 				"out.pdf"
 			);
 			
 			RenderFrame();
 			state = gl2psEndPage();
 		}
 		fclose(fp);
 		MessageBoxA(null, "File saved", "Information", MB_OK | MB_ICONINFORMATION);
 	}
 	catch(Object o){
 		MessageBoxA(null, cast(char*)o.toString(), "Critical Error", MB_OK |
MB_ICONERROR);
 	}
 }
 ________________________________________________________
 exactly: gl2ps->stream = fp;
 

 
 Have you tried debugging this code with ddbg, and checked what the 
 actual values of gl2ps and gl2ps->stream are when it crashes?
 
 http://ddbg.mainia.de/

 
 I converted all gl2ps code to d and then started debugging with ddbg.
 I have got a problem with allocating memory. I have got the following code:
 
 if(gl2ps.bgcolor is cast(GL2PSrgba*)null){
     gl2ps.bgcolor = cast(GL2PSrgba*)malloc(GL2PSrgba.sizeof);
 }
 
 and error:
 Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at
?Alloc RTLPool  QAEPAXXZ (0x0042e8a9) thread(5368)
 
 I don't know what does it mean.
 
 

Does it crash on the malloc line?  Maybe you've got heap corruption. 
You could check for stray pointers or buffer overflows.  Maybe someone 
else recognizes this error and can tell you more, because I might be 
completely wrong about this.

May 25 2008

Zarathustra <adam.chrapkowski gmail.com> writes:

torhu Wrote:

 Zarathustra wrote:
 torhu Wrote:
 
 Zarathustra wrote:
 
 Oh, I find out something.
 The most crashes occur in similar calls (in DLL) like following:
 ________________________________________________________
 offs += fprintf(gl2ps->stream, "%%PDF-1.4\n");
 ________________________________________________________
 it looks like DLL haven't got access to FILE(gl2ps->stream), but why?
 The FILE is operand of gl2psBeginPage.
 Call of gl2psBeginPage function in my D code is in following function:
 ________________________________________________________
 extern (C) void
 SaveFile(){
 	FILE* fp;
 	int state = GL2PS_OVERFLOW;
 	int buffsize = 0;
             		
 	try{
 		fp = fopen("out.pdf", "wb");
 		while(state == GL2PS_OVERFLOW){
 			buffsize += 1024*1024;
 
 			gl2psBeginPage(
 				"test", 
 				"gl2psTestSimple", 
 				null, 
 				GL2PS_PDF, 
 				GL2PS_SIMPLE_SORT,
 				GL2PS_DRAW_BACKGROUND | GL2PS_USE_CURRENT_VIEWPORT,
 				GL_RGBA, 
 				0, 
 				null, 
 				0, 
 				0, 
 				0, 
 				buffsize, 
 				fp, 
 				"out.pdf"
 			);
 			
 			RenderFrame();
 			state = gl2psEndPage();
 		}
 		fclose(fp);
 		MessageBoxA(null, "File saved", "Information", MB_OK | MB_ICONINFORMATION);
 	}
 	catch(Object o){
 		MessageBoxA(null, cast(char*)o.toString(), "Critical Error", MB_OK |
MB_ICONERROR);
 	}
 }
 ________________________________________________________
 exactly: gl2ps->stream = fp;
 

 
 Have you tried debugging this code with ddbg, and checked what the 
 actual values of gl2ps and gl2ps->stream are when it crashes?
 
 http://ddbg.mainia.de/

 
 I converted all gl2ps code to d and then started debugging with ddbg.
 I have got a problem with allocating memory. I have got the following code:
 
 if(gl2ps.bgcolor is cast(GL2PSrgba*)null){
     gl2ps.bgcolor = cast(GL2PSrgba*)malloc(GL2PSrgba.sizeof);
 }
 
 and error:
 Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at
?Alloc RTLPool  QAEPAXXZ (0x0042e8a9) thread(5368)
 
 I don't know what does it mean.
 
 

 
 Does it crash on the malloc line?  Maybe you've got heap corruption. 
 You could check for stray pointers or buffer overflows.  Maybe someone 
 else recognizes this error and can tell you more, because I might be 
 completely wrong about this.

Ok I resolved this problem by change std.c.stdlib.malloc on std.gc.malloc.
But now I still have a problem with fprintf() functions.
code:
________________________________________________________
offs = fprintf(gl2ps.stream,
                 "1 0 obj\n<<\n/Title (%s)\n/Creator (GL2PS %d.%d.%d%s,
%s)\n/Producer (%s)\n",
                 gl2ps.title, GL2PS_MAJOR_VERSION, GL2PS_MINOR_VERSION,
                 GL2PS_PATCH_VERSION, GL2PS_EXTRA_VERSION, GL2PS_COPYRIGHT,
                 gl2ps.producer);
________________________________________________________
Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at _strlen
(0x0042a37d) thread(3380)

but when I change it:
code
________________________________________________________
  offs = fprintf(gl2ps.stream,
                 /*"1 0 obj\n<<\n/Title (%s)\n/Creator (GL2PS %d.%d.%d%s,
%s)\n/Producer (%s)\n",*/
                 gl2ps.title, GL2PS_MAJOR_VERSION, GL2PS_MINOR_VERSION,
                 GL2PS_PATCH_VERSION, GL2PS_EXTRA_VERSION, GL2PS_COPYRIGHT,
                 gl2ps.producer);
________________________________________________________
everything is ok :/, too long string or what?

May 25 2008

"Koroskin Denis" <2korden gmail.com> writes:

On Sun, 25 May 2008 22:57:35 +0400, Zarathustra  =

<adam.chrapkowski gmail.com> wrote:

 Ok I resolved this problem by change std.c.stdlib.malloc on  =

 std.gc.malloc.
 But now I still have a problem with fprintf() functions.
 code:
 ________________________________________________________
 offs =3D fprintf(gl2ps.stream,
                  "1 0 obj\n<<\n/Title (%s)\n/Creator (GL2PS %d.%d.%d%s=

,  =

 %s)\n/Producer (%s)\n",
                  gl2ps.title, GL2PS_MAJOR_VERSION, GL2PS_MINOR_VERSION=

,
                  GL2PS_PATCH_VERSION, GL2PS_EXTRA_VERSION,  =

 GL2PS_COPYRIGHT,
                  gl2ps.producer);
 ________________________________________________________
 Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at _strlen=

  =

 (0x0042a37d) thread(3380)

 but when I change it:
 code
 ________________________________________________________
   offs =3D fprintf(gl2ps.stream,
                  /*"1 0 obj\n<<\n/Title (%s)\n/Creator (GL2PS  =

 %d.%d.%d%s, %s)\n/Producer (%s)\n",*/
                  gl2ps.title, GL2PS_MAJOR_VERSION, GL2PS_MINOR_VERSION=

,
                  GL2PS_PATCH_VERSION, GL2PS_EXTRA_VERSION,  =

 GL2PS_COPYRIGHT,
                  gl2ps.producer);
 ________________________________________________________
 everything is ok :/, too long string or what?

Looks like you provide a null-pointer as a string to fprintf...

May 25 2008

Zarathustra <adam.chrapkowski gmail.com> writes:

Koroskin Denis Wrote:

 On Sun, 25 May 2008 22:57:35 +0400, Zarathustra  
 <adam.chrapkowski gmail.com> wrote:
 
 Ok I resolved this problem by change std.c.stdlib.malloc on  
 std.gc.malloc.
 But now I still have a problem with fprintf() functions.
 code:
 ________________________________________________________
 offs = fprintf(gl2ps.stream,
                  "1 0 obj\n<<\n/Title (%s)\n/Creator (GL2PS %d.%d.%d%s,  
 %s)\n/Producer (%s)\n",
                  gl2ps.title, GL2PS_MAJOR_VERSION, GL2PS_MINOR_VERSION,
                  GL2PS_PATCH_VERSION, GL2PS_EXTRA_VERSION,  
 GL2PS_COPYRIGHT,
                  gl2ps.producer);
 ________________________________________________________
 Unhandled Exception: EXCEPTION_ACCESS_VIOLATION(0xc0000005) at _strlen  
 (0x0042a37d) thread(3380)

 but when I change it:
 code
 ________________________________________________________
   offs = fprintf(gl2ps.stream,
                  /*"1 0 obj\n<<\n/Title (%s)\n/Creator (GL2PS  
 %d.%d.%d%s, %s)\n/Producer (%s)\n",*/
                  gl2ps.title, GL2PS_MAJOR_VERSION, GL2PS_MINOR_VERSION,
                  GL2PS_PATCH_VERSION, GL2PS_EXTRA_VERSION,  
 GL2PS_COPYRIGHT,
                  gl2ps.producer);
 ________________________________________________________
 everything is ok :/, too long string or what?

 
 Looks like you provide a null-pointer as a string to fprintf...

Why Do you think that? When I shorten string then error don't occur. There
didn't occur null pointers, I checked It before.
I think that interesting is the error "_strlen". Also interesting is that, why
when I execute this code with C then everything is ok. How to check what does
this error exactly mean? It looks like rate of data is too big for one
fprintf() call.

May 25 2008

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