updated

graph/libgd/files/patch-gdtest.c

@@ -0,0 +1,58 @@
+--- src/gdtest.c.orig	2015-09-16 11:34:29 UTC
++++ src/gdtest.c
+@@ -35,6 +35,8 @@ main (int argc, char **argv)
+ 	gdSink imgsnk;
+ 	int foreground;
+ 	int i;
++	gdIOCtx *ctx;
++
+ 	if (argc != 2) {
+ 		fprintf(stderr, "Usage: gdtest filename.png\n");
+ 		exit (1);
+@@ -63,6 +65,35 @@ main (int argc, char **argv)
+ 
+ 	CompareImages ("Initial Versions", ref, im);
+ 
++        /* */
++        /* Send to GIF File then Ptr */
++        /* */
++        sprintf(of, "%s.gif", argv[1]);
++        out = fopen(of, "wb");
++        gdImageGif(im, out);
++        fclose(out);
++
++        in = fopen(of, "rb");
++        if (!in) {
++                fprintf(stderr, "GIF Output file does not exist!\n");
++                exit(1);
++        }
++        im2 = gdImageCreateFromGif(in);
++        fclose(in);
++
++        CompareImages("GD->GIF File->GD", ref, im2);
++
++        unlink(of);
++        gdImageDestroy(im2);
++
++	iptr = gdImageGifPtr(im,&sz);
++	ctx = gdNewDynamicCtx(sz,iptr);
++	im2 = gdImageCreateFromGifCtx(ctx);
++
++        CompareImages("GD->GIF ptr->GD", ref, im2);
++
++	gdImageDestroy(im2);
++	ctx->gd_free(ctx);
+ 
+ 	/* */
+ 	/* Send to PNG File then Ptr */
+@@ -334,6 +365,10 @@ main (int argc, char **argv)
+ 	printf ("[Merged Image has %d colours]\n", im2->colorsTotal);
+ 	CompareImages ("Merged (gdtest.png, gdtest_merge.png)", im2, im3);
+ 
++	out = fopen ("test/gdtest_merge_out.png", "wb");
++	gdImagePng(im2, out);
++	fclose(out);
++
+ 	gdImageDestroy (im2);
+ 	gdImageDestroy (im3);
+