patch 7.4.2326
Problem: Illegal memory access when Visual selection starts in invalid
position. (Dominique Pelle)
Solution: Correct position when needed.
diff --git a/src/misc2.c b/src/misc2.c
index 7c639d6..4d914d2 100644
--- a/src/misc2.c
+++ b/src/misc2.c
@@ -505,6 +505,28 @@
}
/*
+ * Make sure "pos.lnum" and "pos.col" are valid in "buf".
+ * This allows for the col to be on the NUL byte.
+ */
+ void
+check_pos(buf_T *buf, pos_T *pos)
+{
+ char_u *line;
+ colnr_T len;
+
+ if (pos->lnum > buf->b_ml.ml_line_count)
+ pos->lnum = buf->b_ml.ml_line_count;
+
+ if (pos->col > 0)
+ {
+ line = ml_get_buf(buf, pos->lnum, FALSE);
+ len = (colnr_T)STRLEN(line);
+ if (pos->col > len)
+ pos->col = len;
+ }
+}
+
+/*
* Make sure curwin->w_cursor.lnum is valid.
*/
void