I have written a small character driver, in the cleanup module at the line
int a=unregister_chrdev(Major,DEVICE_NAME);
I am getting the following error
error: void value not ignored as it ought to be
If the value return by unregister_chrdev() function is not stored in any variable it is working fine...
So far I have this:
Code:
int mm_init (mm_t *MM, int hm, int sz) {
int i;
[code]...
I have been trying to get a void pointer cast to work and I seem to have some problems. My code compiles, but when I execute it gives back garbage data. I'm not sure what I'm doing wrong.
Code:
int main()
{
[code]....
I have a problem with correctly using a void pointer. I am writing a system that can open plugins and run them, and so far everything is going fine: I have a struct with some variables in, some function pointers, and I've written a small library to handle these correctly to communicate with the plugin. My challenge is that I need to put a pointer (let's call it "context") into this struct. The type is not important to the main body of code, and it is not ever used except by the plugin. The plugin will malloc some space for itself, and this *context will then point to whatever malloc returned. context is the address to a struct that I typedeffed to "ctxt".
Here is the first struct I mentioned:
Code:
typedef struct slave {
int val1;
int val2;
int (*entry)(struct slave*, int a, int b);
void *context;
} target;
Here are some snippets from the plugin:
Code:
typedef struct context {
int a;
int b;
} ctxt;
(*target).context = malloc(sizeof(struct ctxt));
So that (*target).*(ctxt)*context.a should refer to the int a in struct context.
But the error that the compiler gives me is a syntax one:
"expected identifier before '*' token"
Is my logic correct? Is my C correct?
I was going through a file known as linux-2.6.34/kernel/timer.c and found following code.
static inline void
timer_set_base(struct timer_list *timer, struct tvec_base *new_base)
{
timer->base = (struct tvec_base *)((unsigned long)(new_base) |
tbase_get_deferrable(timer->base));
}
I want to understand what is it doing. What is the meaning of static inline in above? I searched and came across
[Code]...
So, DnD is cool - and in Java, it works. Just set the component where the drag starts to allow that:
Quote: tblMain.setDragEnabled(true);
and - yes - the rest pretty much runs itself. I have a JTextField that happily takes the drop from the JTable (be it the whole row - I'm not there yet, still working on that)...but does not raise any events. I'd like the JTextField to raise an event:
- cleaning up the received data, now it gets the raw stuff, and I need an ID from that string
- starting up another void() with the received ID
I read the tutorials but - for blisters - cannot see the "light", please shed some (light, that is)
When I paste a text selection from a Firefox page into a text field in the page, the selection becomes void.
View 5 Replies View RelatedI just bought an... Acer Aspire 4 gig on board 750 gig hard drive I5 processor Question is, if I install dual boot with Windows 7 and Ubuntu, will that VOID my warranty?
View 4 Replies View RelatedWe make everyday a DB Mysql backup on Linux redhat Enterprise. We are using a bash shell script (and putting it in the crontab) to execute it automatically everyday. We added a line to this script telling, once the backup has completed, to find old backup files (stored on hard disk after each backup) older than x days to remove them. We use the find command (search for file type) with the mtime option and in combination with rm command. Everything runs ok but we also want to add some new code to the same line: If find command cannot find anything or fails, for example if it cannot delete file or fails, send the error message (standard error output) to an error file (like error000001 and increasing) and mail the errorxxxx file to an email address for example to admin@companyname.com. What would be the code for this issue to add it to our find command in the same bash shell script??
View 2 Replies View Relatedhow to rectify these errors..
RCC: Error in 'appchooser.qrc': Cannot find file 'accessories-dictionary.png'
RCC: Error in 'appchooser.qrc': Cannot find file 'akregator.png'
RCC: Error in 'appchooser.qrc': Cannot find file 'digikam.png'
RCC: Error in 'appchooser.qrc': Cannot find file 'k3b.png'
RCC: Warning: No resources in 'appchooser.qrc'.
and my .qrc file is like this
<!DOCTYPE RCC><RCC version="1.0">
<qresource>
<file>accessories-dictionary.png</file>
<file>akregator.png</file>
<file>digikam.png</file>
code....
Parse error: syntax error, unexpected '@' in C:xampphtdocsminippromail.php on line 8 .......its not recognizing the '@' symbol. heres the code im working with
<?php $receiver = myfriend@ourmail.co.in; $subject = wish; $content = Hi! My dear friend how are you.; $sender = myself@ ourmail.co.in ; $headers = From: $sender; mail($receiver,$subject, $content,$headers); echo Mail has been sent successfully.; ?>
i have Ubuntu10.10 (kernel-2.6.35-22-generic) installed. struct stat StatBuff;
[Code]...
I have mounted a windows share folder on /mnt. When i gave any directory within /mnt/ to stat function it fails with errorno 75. perror shows "Value too large for defined data type". Example 1 is fail but Example 2 works fine.
I have installed it++ on suse11.2 I have downloaded an example project and everytime i try to "make"..error "/bin/sh: line 1: .dependencies: Permission denied" comes up.I have tried to run as root but this hangs on "checking dependencies" and gives no action.
View 2 Replies View RelatedI am a newbie in unix shell script programming . After I have tried to execute this code , I found the problem said that "syntax error near unexpected token done" . I don't know that where is the mistake in my code . Could anyone help me out this problem ?, PS* : I executed it in Redhat Enterprise Linux 4 and this is my code :
#!/bin/ksh
# Purge Script
# Input:
# 1. path (absolute path)
# 2. filename (does not apply to empty folder name)
# 3. retention policy (in day)
[Code]...
The following is the error in my program :
Here is my program...
Code:
When i call Connect() in side HandleConnection() it returns -1 and when i set strerror(errno) it returns "No Error" with value 0.
I'm working on a project where I am converting a C file to C++. I have worked out 99% of the errors but there is still one lingering one that I cant seem to figure out. I get the following error when compiling with g++
Code:
mscp.cpp:749: error: invalid conversion from const void* to move
mscp.cpp:750: error: invalid conversion from const void* to move
[code]...
I wonder how error handling is done in C in real applications, by returning a error code when something goes wrong, or by using setjmp and longjmp, or something else?
View 10 Replies View RelatedWhen I compile the following program with g++ I am getting error:
When I compile:
why I am getting this error?
I'm trying to parse an xml file in C using libxml2, however the function xmlParseFile returns
e100.xml:12764: parser error : Premature end of data in tag ErrorStrings line 11211
^
e100.xml:12764: parser error : Premature end of data in tag APIDefinitionTable line 2
^
I have tested the xml file with W3C validator and no errors were reported, the file also opens find in firefox, and looking at the file with a hex editor I can see any errors where those lines are.
I use serial port. I get serial EAGAIN error. I open serial port with below settings.
do I have any error with settings.
static int fd=-1;
bool openPort(int baudrate, const char * ThePort) {
unsigned long BAUD;
struct termios port_settings;
[Code].....
Well I got an strange error while I am programming. In fact, I am doing fast udp communication and testing the communication. In order to do it, I have done a program which test how many frame i manage to receive by changing the flow( between 800 Mb/s to 950Mb/s). The flow and number of Frame are defined in an other computer and every thing about that is alright.
While I am testing the number of Frame received 100 time, sometimes, I get 995 receveid et the next 1005 receveid instead of 1000. The delay for receiving frame lasts much more than the real delay.
So how could this error happen and how can I do for this error to not occur anymore?
gcc kk.c : kk.c:1: fatal error: gtk/gtk.h: No such file or directory compilation terminated.
View 1 Replies View Relatedi want to run this code
[code]...
i have error in graphics. i have C++ 2005
i getting following error message plz help me to solve
[root@localhost a]# awk -f dream2.awk simple.tr >simple1.tr
awk: dream2.awk:29: (FILENAME=simple.tr FNR=53107) fatal: division by zero attempted
[root@localhost a]#
I've been told to move my code from MFC to linux platform, and so I did, trying to keep as much as I can on the way, now, I had a dll and application, the application I rewrote all anew while the dll I only made changes so it'll be an ".so" file, now, when I try to link using "dlopen", I get the message "undefined symbol: _ZN5ImageC1EiiPh", now, Image is a class in the DLL, which even makes its own ".o" file for the DLL itself. I just can't understand why it happens. I use Image in functions which are not in Extern "C", but the functions I want to use don't use it. Also, I have many globals in the DLL, (because that's how the DLL was written in the past) but none of them is Image...
Is the problem with the fact I include a c++ class in the DLL? How can I solve such a problem? I tried messing with how I link it, but I think that's not the issue here.
I use g++ and -rdynamic --export-dynamic -ldl -lrt for the application
and for the dll I use -shared -Wl,-soname, and -lm, and for the .o files of the dll -Wall -fPIC (although for some reason it doesn't let me do it through the makefile and I needed to do that by hand, which was a little weird. I put it in tag, I put it in line, but it still did nothing...
I've got a 'nested' for loop which has a grep in it, if the grep fails there's no output - however the error code is still $0 and the second for loop is still entered, there's also a grep in the second for loop.I guess ultimately what i need to know is whether there's a way of making grep generate an error code. when no results are found?
View 14 Replies View RelatedCode:
Above is a code for UDP server which I am trying.
When I compile it I get following errors
Code:
I just installed codeblocks 8.02.
And I want to run some data structure program.
When I click run it gives me error as
Code:
sh: /home/sujit/Documents/2nd Sem/ds: Permission Denied.
Press ENTER to continue.
What should be done?
I have the following code:
Code:
And it gives this error:
Code: