[or-cvs] [tor/release-0.2.1] Fix a double-counting bug in addrmap_get_virtual_address

[arma at torproject.org]

commit 31d6659d974800e972af43856405e8a7abe08f72
Author: Nick Mathewson <nickm at torproject.org>
Date:   Wed Jan 5 16:02:43 2011 -0500

    Fix a double-counting bug in addrmap_get_virtual_address
    
    We were decrementing "available" twice for each in-use address we ran
    across.  This would make us declare that we ran out of virtual
    addresses when the address space was only half full.
---
 changes/bug2328          |    4 ++++
 src/or/connection_edge.c |    2 +-
 2 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/changes/bug2328 b/changes/bug2328
new file mode 100644
index 0000000..e5ce492
--- /dev/null
+++ b/changes/bug2328
@@ -0,0 +1,4 @@
+  o Minor bugfixes
+    - Fix a bug where we would declare that we had run out of virtual
+      addresses when the address space was only half-exhausted.  Bugfix
+      on 0.1.1.19-rc.
diff --git a/src/or/connection_edge.c b/src/or/connection_edge.c
index 9ecdf5c..6c23775 100644
--- a/src/or/connection_edge.c
+++ b/src/or/connection_edge.c
@@ -1178,7 +1178,7 @@ addressmap_get_virtual_address(int type)
       ++next_virtual_addr;
       --available;
       log_info(LD_CONFIG, "%d addrs available", (int)available);
-      if (! --available) {
+      if (! available) {
         log_warn(LD_CONFIG, "Ran out of virtual addresses!");
         return NULL;
       }