1 files changed, 27 insertions, 0 deletions
diff --git a/tests/gif/bug00415.c b/tests/gif/bug00415.c
new file mode 100644
index 0000000..e95df28
--- /dev/null
+++ b/tests/gif/bug00415.c
@@ -0,0 +1,27 @@
+#include <gd.h>
+#include "gdtest.h"
+
+int main()
+{
+    gdImagePtr im1, im2;
+
+    im1 = gdImageCreate(100, 100);
+    gdImageColorAllocate(im1, 0, 0, 0);
+    im2 = gdImageCreate(10, 10);
+    gdImageColorAllocate(im2, 255, 255, 255);
+
+    FILE *fp = gdTestTempFp();
+    if (!fp) return 4;
+    gdImageGifAnimBegin(im1, fp, 0, 0);
+    gdImageGifAnimAdd(im1, fp, 1, 0, 0, 100, 1, NULL);
+    gdImageGifAnimAdd(im2, fp, 1, 0, 0, 100, 1, im1);
+    // replacing `im2` with `NULL` in the following line succeeds
+    gdImageGifAnimAdd(im1, fp, 1, 0, 0, 100, 1, im2);
+    gdImageGifAnimEnd(fp);
+    fclose(fp);
+
+    gdImageDestroy(im1);
+    gdImageDestroy(im2);
+
+    return 0;
+}
+\ No newline at end of file