[tor-commits] [tor/master] Assert that we aren't returning a pointer to a local variable.

[nickm at torproject.org]

commit 620108ea7770608de72dcbea4ca73d6fb99c1109
Author: Nick Mathewson <nickm at torproject.org>
Date:   Tue Sep 18 14:34:49 2018 -0400

    Assert that we aren't returning a pointer to a local variable.
    
    GCC got confused here with LTO enabled.
    
    Fixes part of #27772.
---
 src/feature/nodelist/routerparse.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/feature/nodelist/routerparse.c b/src/feature/nodelist/routerparse.c
index b76b2974f..ae57fbe49 100644
--- a/src/feature/nodelist/routerparse.c
+++ b/src/feature/nodelist/routerparse.c
@@ -4436,7 +4436,9 @@ router_parse_addr_policy(directory_token_t *tok, unsigned fmt_flags)
     return NULL;
   }
 
-  return addr_policy_get_canonical_entry(&newe);
+  addr_policy_t *result = addr_policy_get_canonical_entry(&newe);
+  tor_assert(result != &newe); // We aren't returning the one from the stack.
+  return result;
 }
 
 /** Parse an exit policy line of the format "accept[6]/reject[6] private:...".