Segmentation fault on printf() [NOOB ALERT]

[Richardcavell]

Hi, everyone. I'm tearing my hair out. The second printf statement segfaults. Printed on the screen is:

BeforeLibcurlinitializedsuccessfully
Segmentation fault

#include "curl/curl.h"		/*        /usr/include/curl/curl.h comes with package libcurl4-dev     */
#include <stdio.h>
#include <string.h>
#include "Error.h"

#define StringMax 100

static unsigned int libcurlinitialized = 0 ;

int initializeinternetfunctions ( void )
{ 
	char Message2 [] = "Libcurl initialized successfully.\n" ;
	printf("Before");
	int z = printf ( "%s" , Message2 ) ;
	printf("After");
	if ( z != strlen ( Message2 ) )
	{
		ErrorMessage ( "Couldn't print to screen." , __FILE__ , __LINE__ );
		return -1;
	}

	return 0 ;
}

[quzah]

It's not the second printf that was segfaulting, or you wouldn't see it. It's more likely that it's after it returns. Your "After" doesn't have a newline, which means that printf isn't required to immediately flush (write so you can see it) the output stream. It's probably printing "After", you don't see it, because it immediately crashes after it returns, but before it writes "After".


Quzah.

[Richardcavell]

Yes, you're right. This code is not where the error is. I'll continue bug hunting.

Richard