mc-3693-syntax.c-Cleanup-unsafe-loop-optimizations-compiler-.patch

From e6146633d6fe5866a78a9469dae51cd7565224e3 Mon Sep 17 00:00:00 2001
From: Andreas Mohr <and@gmx.li>
Date: Tue, 6 Dec 2016 10:33:40 +0000
Subject: [PATCH] (syntax.c) Cleanup unsafe-loop-optimizations compiler warning

Found by GCC 6.2.0.

syntax.c: In function 'edit_get_rule':
syntax.c:572:9: error: cannot optimize possibly infinite loops [-Werror=unsafe-loop-optimizations]

Signed-off-by: Andreas Mohr <and@gmx.li>
---
 src/editor/syntax.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/editor/syntax.c b/src/editor/syntax.c
index 20130d6..056060a 100644
--- a/src/editor/syntax.c
+++ b/src/editor/syntax.c
@@ -569,21 +569,21 @@ edit_get_rule (WEdit * edit, off_t byte_index)
 
     if (byte_index > edit->last_get_rule)
     {
-        for (i = edit->last_get_rule + 1; i <= byte_index; i++)
+        for (i = edit->last_get_rule; i < byte_index; i++)
         {
             off_t d = SYNTAX_MARKER_DENSITY;
 
-            apply_rules_going_right (edit, i);
+            apply_rules_going_right (edit, i + 1);
 
             if (edit->syntax_marker != NULL)
                 d += ((syntax_marker_t *) edit->syntax_marker->data)->offset;
 
-            if (i > d)
+            if (i + 1 > d)
             {
                 syntax_marker_t *s;
 
                 s = g_new (syntax_marker_t, 1);
-                s->offset = i;
+                s->offset = i + 1;
                 s->rule = edit->rule;
                 edit->syntax_marker = g_slist_prepend (edit->syntax_marker, s);
             }