This short program gives a Segmentation fault

// gcc `pkg-config --cflags --libs cairo` pdf-test.c -o pdf-test

#include <cairo.h>
#include <cairo-pdf.h>

#define X_INCHES 2
#define Y_INCHES 2
#define X_PPI    300.0
#define Y_PPI    300.0

#define WIDTH    X_INCHES * 96.0
#define HEIGHT   Y_INCHES * 96.0

#define FILENAME "/tmp/test.pdf" 

int
main (void)
{
    cairo_t *cr;
    cairo_surface_t *surface;
    FILE *file;

    file = fopen (FILENAME, "w");
    if (file == NULL) {
	fprintf (stderr, "Failed to open file %s for writing.\n", FILENAME);
	return 1;
    }
    cr = cairo_create ();
    surface = cairo_pdf_surface_create (file, X_INCHES, Y_INCHES, X_PPI, Y_PPI);
    cairo_set_target_surface (cr, surface);
    cairo_save(cr);
    cairo_restore(cr);
    return 0;
}