From: Michael D. Lowis <mike.lowis@gentex.com>
Date: Tue, 3 Jul 2018 17:36:36 +0000 (-0400)
Subject: fixed bad memory handling in view when clearing rows
X-Git-Url: https://git.mdlowis.com/?a=commitdiff_plain;h=13c0ad3e4b0b67f21a27cb6f0e6d06f92854f042;p=projs%2Ftide.git

fixed bad memory handling in view when clearing rows
---

diff --git a/lib/view.c b/lib/view.c
index 30168c1..0d0cfb7 100644
--- a/lib/view.c
+++ b/lib/view.c
@@ -51,9 +51,17 @@ static Sel* getsel(View* view) {
 
 static void clear_rows(View* view, size_t startidx) {
     if (view->rows) {
-        for (size_t i = startidx; i < view->nrows; i++)
+        /* Free and clear invalid rows now */
+        for (size_t i = startidx; i < view->nrows; i++) {
             free(view->rows[i]);
-        view->rows = realloc(view->rows, startidx);
+            view->rows[i] = NULL;
+        }
+        /* grow row array if needed */
+        if (startidx > view->nrows)
+            view->rows = realloc(view->rows, startidx);
+        /* zero out newly created slots */
+        for (size_t i = view->nrows; i < startidx; i++)
+            view->rows[i] = NULL;
         view->nrows = startidx;
     }
 }