define ULLONG_MAX if not already defined

(cherry picked from commit 4110b9184da5660372342d620700436abac25c52)

diff --git a/lib/dns/gen.c b/lib/dns/gen.c
index 472ce43f91e8a2889ec7f6ae7190218a39d00f19..201429f132f0c51ab542c0d9bb1968f58b7802db 100644 (file)
--- a/lib/dns/gen.c
+++ b/lib/dns/gen.c
@@ -43,6 +43,10 @@
 #include "gen-unix.h"
 #endif
 
+#ifndef ULLONG_MAX
+#define ULLONG_MAX (~0ULL)
+#endif
+
 #define INSIST(cond) \
        if (!(cond)) { \
                fprintf(stderr, "%s:%d: INSIST(%s)\n", \