Thread: execl: Bad Address

What does it mean?

Probably passing a bad pointer to execl() - it's hard to say, because sometimes the error codes from a system call are "reusing a nearby error" instead of creating a new "non-standard" error code.

--
Mats

My guess is you forgot to add the (char*)0 to the end of the list of arguments.

my program writes a file (inside a function, using write and fread).And just after that i run

Code:

 if(execute(2, tempFileName) ==ERR){	/* executes another program */
				exit(1);
			}

but in that case the program fails ... and says bad address.

But if i call execute from another program it runs perfectly.
I suspect that the function that writes the file is not completely correct.

Can anyone help me with this?

I posted this problem but no one seems to know...
http://cboard.cprogramming.com/showthread.php?t=98407

please help.

Code:

static char *program[8] = {
			"./avgFilter", 
			"./binarize", 
			"./invert", 
			"", "", "", ""};

int execute(short progNumber, char * fileName){
	int pid;
	int status;
	
	/*
	 *	Get a child process
	 */
	if((pid = fork()) < 0){
		perror("fork: ");
		return(-1);
	}
	
	/*
	 *	The child executes the program
	 */
	if(pid == 0){
		execl(program[progNumber],program[progNumber], fileName, (char *)0);
		perror("execl");
		return(-1);
	}
	
	/*
	 *	The parent process just waits
	 */
	if (pid >= 1) {
		wait(&status);
	}
	
	return(0);
}

Can you show the "tempFilename" declaration?

--
Mats