From: Max Mouratov <mmouratov@gmail.com>
Date: Sun, 21 Oct 2012 14:39:17 +0000 (+0600)
Subject: Fix: VirtualAlloc leaks when freeing the heap on win32
X-Git-Tag: gc7_4_0~100
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=376e63f889300ea1becab97cf9b1637b53a64e91;p=gc

Fix: VirtualAlloc leaks when freeing the heap on win32
---

diff --git a/os_dep.c b/os_dep.c
index df5ebdb0..2074f465 100644
--- a/os_dep.c
+++ b/os_dep.c
@@ -2308,7 +2308,14 @@ void * os2_alloc(size_t bytes)
 #       endif
         GC_heap_bases[GC_n_heap_bases] = 0;
       }
-    }
+
+    // Avoiding the VirtualAlloc leak
+    } else {
+        while (GC_n_heap_bases > 0) {
+          VirtualFree(GC_heap_bases[--GC_n_heap_bases], 0, MEM_RELEASE);
+          GC_heap_bases[GC_n_heap_bases] = 0;
+        }
+      }
   }
 #endif /* USE_WINALLOC || CYGWIN32 */