casa-mp-base

--- libical-1.0/src/libical/orig.icaltimezone.c 2014-07-28 17:05:08.000000000 +0200

+++ libical-1.0/src/libical/icaltimezone.c      2014-07-28 17:07:13.000000000 +0200

@@ -47,7 +47,10 @@

 #ifdef HAVE_PTHREAD

 #include <pthread.h>

-static pthread_mutex_t builtin_mutex = PTHREAD_MUTEX_INITIALIZER;

+// static pthread_mutex_t builtin_mutex = PTHREAD_MUTEX_INITIALIZER;

+// It seems the same thread can attempt to lock builtin_mutex multiple times

+// (at least when using builtin tzdata), so make it builtin_mutex recursive:

+static pthread_mutex_t builtin_mutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;

 #endif

 #ifdef WIN32

​