out of order read in git master with arrajoin and jpg images

[jcupitt]

This sample program:

/* compile with:
 *
 * gcc -g -Wall try330.c `pkg-config vips --cflags --libs`
 */

#include <vips/vips.h>
    
int 
main(int argc, char **argv) 
{
    VipsObject *context;
    VipsImage *image;
    VipsImage **images;
    int n_images;
    int i;

    if (VIPS_INIT(argv[0]))
        vips_error_exit(NULL);

    if (argc != 4)
        vips_error_exit("usage: %s infile outfile 4", argv[0]);

    n_images = atoi(argv[3]);
    context = VIPS_OBJECT(vips_image_new());
    images = (VipsImage **) vips_object_local_array(context, n_images);

    for (i = 0; i < n_images; i++)
        if (!(images[i] = vips_image_new_from_file(argv[1], 
                "access", VIPS_ACCESS_SEQUENTIAL, NULL))) {
            g_object_unref(context);
            vips_error_exit(NULL);
        }

    if (vips_arrayjoin(images, &image, n_images, "across", 1, NULL)) {
        g_object_unref(context);
        vips_error_exit(NULL);
    }

    if (vips_image_write_to_file(image, argv[2], NULL)) {
        g_object_unref(image);
        g_object_unref(context);
        vips_error_exit(NULL);
    }

    g_object_unref(image);
    g_object_unref(context);

    return 0;
}

Fails like this:

$ ./a.out ~/pics/k2.jpg x.tif 1
$ ./a.out ~/pics/k2.jpg x.tif 10
$ ./a.out ~/pics/k2.jpg x.tif 100

(process:806177): VIPS-WARNING **: 18:58:54.572: error in tile 0 x 1920
VipsJpeg: out of order read at line 2048

With git master libvips. This only fails with JPEG source images. The output format doesn't matter.

[jcupitt]

Context kleisauke/net-vips#135

[jcupitt]

Seems to be fixed, phew,