>From ac7390ac0884d155d3adc9d0f992413adcaaff87 Mon Sep 17 00:00:00 2001
From: Bruno Haible <address@hidden>
Date: Sat, 6 Jul 2019 00:43:59 +0200
Subject: [PATCH 4/5] xgetdomainname: Don't return an excessive memory
 allocation.

* lib/xgetdomainname.c (xgetdomainname): Shrink the domainname buffer
before returning it.
---
 ChangeLog            |  6 ++++++
 lib/xgetdomainname.c | 11 +++++++++++
 2 files changed, 17 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index c8dd18a..1f5f18b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2019-07-05  Bruno Haible  <address@hidden>
 
+	xgetdomainname: Don't return an excessive memory allocation.
+	* lib/xgetdomainname.c (xgetdomainname): Shrink the domainname buffer
+	before returning it.
+
+2019-07-05  Bruno Haible  <address@hidden>
+
 	xgethostname: Don't return an excessive memory allocation.
 	* lib/xgethostname.c (xgethostname): Shrink the hostname buffer before
 	returning it.
diff --git a/lib/xgetdomainname.c b/lib/xgetdomainname.c
index 2f59008..65df990 100644
--- a/lib/xgetdomainname.c
+++ b/lib/xgetdomainname.c
@@ -73,5 +73,16 @@ xgetdomainname (void)
       domainname = xrealloc (domainname, size);
     }
 
+  /* Shrink DOMAINNAME before returning it.  */
+  {
+    size_t actual_size = strlen (domainname) + 1;
+    if (actual_size < size)
+      {
+        char *shrinked_domainname = realloc (domainname, actual_size);
+        if (shrinked_domainname != NULL)
+          domainname = shrinked_domainname;
+      }
+  }
+
   return domainname;
 }
-- 
2.7.4