1 files changed, 32 insertions, 0 deletions
diff --git a/tests/gd2/bug797.c b/tests/gd2/bug797.c
new file mode 100644
index 0000000..89adedd
--- /dev/null
+++ b/tests/gd2/bug797.c
@@ -0,0 +1,32 @@
+/**
+ * Test that invalid transparent colors can't be read
+ *
+ * We're reading a corrupt palette image in GD2 format, which has only a single
+ * palette entry, but claims that the transparent color would be 1.  We check
+ * that the transparency is simply ignored in this case.
+ *
+ * See also <https://github.com/libgd/libgd/issues/383>
+ */
+
+
+#include "gd.h"
+#include "gdtest.h"
+
+
+int main()
+{
+    gdImagePtr im;
+    FILE *fp;
+
+    fp = gdTestFileOpen2("gd2", "bug797.gd2");
+    gdTestAssert(fp != NULL);
+    im = gdImageCreateFromGd2(fp);
+    gdTestAssert(im != NULL);
+    fclose(fp);
+
+    gdTestAssert(gdImageGetTransparent(im) == -1);
+
+    gdImageDestroy(im);
+
+    return gdNumFailures();
+}