From: Alberto Bertogli <albertito@blitiri.com.ar>
Date: Fri, 15 May 2009 02:18:09 +0000 (-0300)
Subject: Initialize capacity to 0 when allocating a new cell
X-Git-Tag: word-sized-cells~5
X-Git-Url: https://git.llucax.com/software/dgc/naive.git/commitdiff_plain/2d8639409b4749afd92266347f20b99da80e14c9?hp=1510e826d84ca402a00c5cab2d2e2d172b8602d2

Initialize capacity to 0 when allocating a new cell

Otherwise, when later we do cell.capacity == 0 we're using uninitialized
memory and can return the wrong result if we're not lucky enough to get 0s.
---

diff --git a/gc/gc.d b/gc/gc.d
index 3ee81ac..a7c8f59 100644
--- a/gc/gc.d
+++ b/gc/gc.d
@@ -533,6 +533,7 @@ public:
 
         // No luck still, allocate new memory
         cell = cast(Cell*) cstdlib.malloc(size + Cell.sizeof);
+        cell.capacity = 0; // so we can later tell it's new
         if (cell)
             goto success;