add STACK_TRAP to track stack use on client, will seqfault if exceed limit to see where use is too high, doesn't work with pthread_create()

ctaocrypt/src/asn.c

@@ -137,6 +137,13 @@
     #define XGMTIME(c) gmtime((c))
     #define XVALIDATE_DATE(d, f, t) ValidateDate((d), (f), (t))
 
+    #ifdef STACK_TRAP
+        /* for stack trap tracking, don't call os gmtime on OS X/linux,
+           uses a lot of stack spce */
+        extern time_t time(time_t * timer);
+        #define XTIME(tl)  time((tl))
+    #endif /* STACK_TRAP */
+
 #else
     /* default */
     /* uses complete <time.h> facility */