Windows...

include/sys.h

@@ -220,4 +220,12 @@ typedef unsigned __int32 uint32_t;
 #define __attribute__(x) /* nothing */
 #endif
 
+/* A normal abort() on windows causes the crucial stack frame to be missing
+ * from the stack trace, IOTW: you don't see where abort() was called!
+ * It's silly but this works:
+ */
+#ifdef _WIN32
+ #define abort(x)  do { char *crash = NULL; *crash = 'x'; } while(0)
+#endif
+
 #endif /* __sys_include__ */