From f1b32e87f71ff5718be4c8bf79d29a480600d53b Mon Sep 17 00:00:00 2001
From: Dave Davenport <qball@gmpclient.org>
Date: Sun, 17 Jan 2021 16:09:58 +0100
Subject: [PATCH] Add check for input == NULL.

---
 source/helper.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/source/helper.c b/source/helper.c
index 1eb2b902..07441732 100644
--- a/source/helper.c
+++ b/source/helper.c
@@ -1138,13 +1138,17 @@ char *helper_get_theme_path ( const char *file )
     return filename;
 }
 
-static void parse_pair ( char  *input, rofi_range_pair  *item )
+static gboolean parse_pair ( char  *input, rofi_range_pair  *item )
 {
     // Skip leading blanks.
     while ( input != NULL && isblank ( *input ) ) {
         ++input;
     }
 
+    if ( input == NULL ) {
+        return FALSE;
+    }
+
     const char *sep[]   = { "-", ":" };
     int        pythonic = ( strchr ( input, ':' ) || input[0] == '-' ) ? 1 : 0;
     int        index    = 0;
@@ -1166,6 +1170,7 @@ static void parse_pair ( char  *input, rofi_range_pair  *item )
             --item->stop;
         }
     }
+    return TRUE;
 }
 void parse_ranges ( char *input, rofi_range_pair **list, unsigned int *length )
 {
@@ -1178,9 +1183,9 @@ void parse_ranges ( char *input, rofi_range_pair **list, unsigned int *length )
         // Make space.
         *list = g_realloc ( ( *list ), ( ( *length ) + 1 ) * sizeof ( struct rofi_range_pair ) );
         // Parse a single pair.
-        parse_pair ( token, &( ( *list )[*length] ) );
-
-        ( *length )++;
+        if ( parse_pair ( token, &( ( *list )[*length] ) ) ) {
+            ( *length )++;
+        }
     }
 }
 /**