From ff9dd35c1c1d8e89a9c93db4eae9fba79621eedd Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Mon, 16 Aug 2021 13:53:12 +0200
Subject: GUI: Avoid crash when trying to index no image

---
 src/gui_index.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/gui_index.c b/src/gui_index.c
index 7aaefbf6..8524cc79 100644
--- a/src/gui_index.c
+++ b/src/gui_index.c
@@ -574,6 +574,11 @@ static void run_indexing_once(struct crystfelproject *proj)
 	char *tmpdir;
 	int r;
 
+	if ( proj->cur_image == NULL ) {
+		ERROR("No image to index!\n");
+		return;
+	}
+
 	if ( proj->indexing_params.cell_file != NULL ) {
 		cell = load_cell_from_file(proj->indexing_params.cell_file);
 	} else {
-- 
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