X-Git-Url: https://git.distorted.org.uk/~mdw/adns/blobdiff_plain/bb149f75ad8494e2f955297024c888f04513dea5..9715e5f4f1bcf1790dd7cab02192efd37bcff73a:/client/adnslogres.c

diff --git a/client/adnslogres.c b/client/adnslogres.c
index a91af87..868734b 100644
--- a/client/adnslogres.c
+++ b/client/adnslogres.c
@@ -56,9 +56,12 @@ static const char * const cvsid =
 
 static const char *progname;
 
-static void aargh(const char *msg) {
-  fprintf(stderr, "%s: %s: %s (%d)\n", progname, msg,
-	  strerror(errno) ? strerror(errno) : "Unknown error", errno);
+#define msg(fmt, args...) fprintf(stderr, "%s: " fmt "\n", progname, ##args)
+
+static void aargh(const char *cause) {
+  const char *why = strerror(errno);
+  if (!why) why = "Unknown error";
+  msg("%s: %s (%d)", cause, why, errno);
   exit(1);
 }