From 91ea6184b1eb7aabe2d5cd60f551e1a642201714 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Thu, 26 Oct 2017 23:07:15 +0200
Subject: scblock_delete_text(): Add a warning

---
 src/sc_parse.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/sc_parse.c b/src/sc_parse.c
index 79e59a0..4838bc6 100644
--- a/src/sc_parse.c
+++ b/src/sc_parse.c
@@ -718,7 +718,15 @@ void sc_insert_block(SCBlock *b1, int o1, SCBlock *ins)
 
 void scblock_delete_text(SCBlock *b, size_t o1, size_t o2)
 {
-	size_t len = strlen(b->contents);
+
+	size_t len;
+
+	if ( b->contents == NULL ) {
+		fprintf(stderr, "Deleting text from block \\%s\n", b->name);
+		return;
+	}
+
+	len = strlen(b->contents);
 	if ( (o1 >= o2) || (o1 > len) || (o2 > len) ) {
 		fprintf(stderr, "Invalid delete: %i %i %i\n",
 		        (int)o1, (int)o2, (int)len);
-- 
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