[Forensics-changes] [yara] 241/415: Free regexp engine stacks when finalizing the thread

[Hilko Bengen]

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bengen pushed a commit to branch debian
in repository yara.

commit 871dfe770cb2ddc0ba5b0f23d4504eb673df2c21
Author: Victor M. Alvarez <plusvic at gmail.com>
Date:   Fri Nov 22 15:46:06 2013 +0000

    Free regexp engine stacks when finalizing the thread
---
 libyara/re.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/libyara/re.c b/libyara/re.c
index b243e54..713a862 100644
--- a/libyara/re.c
+++ b/libyara/re.c
@@ -168,16 +168,29 @@ int yr_re_finalize()
 
 int yr_re_finalize_thread()
 {
-  RE_THREAD_STORAGE* thread_storage;
+  RE_STACK* stack;
+  RE_STACK* next_stack;
+  RE_THREAD_STORAGE* storage;
 
   #ifdef WIN32
-  thread_storage = TlsGetValue(thread_storage_key);
+  storage = TlsGetValue(thread_storage_key);
   #else
-  thread_storage = pthread_getspecific(thread_storage_key);
+  storage = pthread_getspecific(thread_storage_key);
   #endif
 
-  if (thread_storage != NULL)
-    yr_free(thread_storage);
+  if (storage != NULL)
+  {
+    stack = storage->stack_pool.free;
+
+    while (stack != NULL)
+    {
+      next_stack = stack->next;
+      yr_free(stack);
+      stack = next_stack;
+    }
+
+    yr_free(storage);
+  }
 
   return ERROR_SUCCESS;
 }

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