[PATCH] version-etc: allow zero authors

[Paul Eggert]

* lib/version-etc.c (version_etc_arn): If no authors are given,
omit authorship info instead of dumping core.
No need to include stdlib.h now.
---
 ChangeLog         | 6 ++++++
 lib/version-etc.c | 6 +++---
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index fd28f3b2c..89407e15e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2018-12-20  Paul Eggert  <address@hidden>
+
+       version-etc: allow zero authors
+       * lib/version-etc.c (version_etc_arn): If no authors are given,
+       omit authorship info instead of dumping core.
+
 2018-12-19  Bruno Haible  <address@hidden>
 
        lchown tests: Be more permissive regarding errno values.
diff --git a/lib/version-etc.c b/lib/version-etc.c
index 56dc24929..dfec8ad5a 100644
--- a/lib/version-etc.c
+++ b/lib/version-etc.c
@@ -23,7 +23,6 @@
 
 #include <stdarg.h>
 #include <stdio.h>
-#include <stdlib.h>
 
 #if USE_UNLOCKED_IO
 # include "unlocked-io.h"
@@ -95,8 +94,9 @@ There is NO WARRANTY, to the extent permitted by law.\n\
   switch (n_authors)
     {
     case 0:
-      /* The caller must provide at least one author name.  */
-      abort ();
+      /* No authors are given.  The caller should output authorship
+         info after calling this function.  */
+      break;
     case 1:
       /* TRANSLATORS: %s denotes an author name.  */
       fprintf (stream, _("Written by %s.\n"), authors[0]);
-- 
2.19.2