1 files changed, 6 insertions, 4 deletions
diff --git a/lib/log.c b/lib/log.c
index 2926091f..9d7bf84a 100644
--- a/lib/log.c
+++ b/lib/log.c
@@ -177,10 +177,10 @@ num_append(char *s, int len, u_long x)
   return str_append(s,len,t);
 }
 
-/*
- * XXX warning: `hex_append' defined but not used
- * Apparently this is used only if HAVE_GLIBC_BACKTRACE is defined.
- */
+#ifdef HAVE_GLIBC_BACKTRACE
+
+/* This function is used only in zlog_backtrace_sigsafe when glibc
+   backtraces are available. */
 static char *
 hex_append(char *s, int len, u_long x)
 {
@@ -199,6 +199,8 @@ hex_append(char *s, int len, u_long x)
   return str_append(s,len,t);
 }
 
+#endif /* HAVE_GLIBC_BACKTRACE */
+
 static int syslog_fd = -1;
 
 /* Needs to be enhanced to support Solaris. */