add init.c, force BUG_ON in safe_malloc()

src/util.h

@@ -17,13 +17,19 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-#include "bug.h"
+#include <bug.h>
 
 #include "chessdefs.h"
 
 #undef safe_malloc
 #undef safe_free
 
+/* force BUG_ON, to get a program abort for failed malloc/free
+ */
+#pragma push_macro("BUG_ON")
+#undef BUG_ON
+#define BUG_ON
+
 #define safe_malloc(size) ({                   \
             void *_ret = malloc(size);         \
             bug_on(_ret == NULL);              \
@@ -35,4 +41,8 @@
         free(ptr);                             \
     } while (0)
 
+/* restore BUG_ON
+ */
+#   pragma pop_macro("BUG_ON")
+
 #endif  /* UTIL_H */