>From eb76defb19b3cc01e12d77d8cc96d402b9b5097d Mon Sep 17 00:00:00 2001
From: Bruno Haible <address@hidden>
Date: Sat, 6 Jul 2019 00:39:07 +0200
Subject: [PATCH 1/5] areadlink-with-size: Don't return an excessive memory
 allocation.

Reported by Andreas Dilger <address@hidden>.

* lib/areadlink-with-size.c (areadlink_with_size): Shrink the buffer
before returning it.
---
 ChangeLog                 | 7 +++++++
 lib/areadlink-with-size.c | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index d6209ef..c0ee6ce 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2019-07-05  Bruno Haible  <address@hidden>
+
+	areadlink-with-size: Don't return an excessive memory allocation.
+	Reported by Andreas Dilger <address@hidden>.
+	* lib/areadlink-with-size.c (areadlink_with_size): Shrink the buffer
+	before returning it.
+
 2019-07-03  Bruno Haible  <address@hidden>
 
 	renameatu: Fix test failure on MSVC.
diff --git a/lib/areadlink-with-size.c b/lib/areadlink-with-size.c
index eacad3f..364cc08 100644
--- a/lib/areadlink-with-size.c
+++ b/lib/areadlink-with-size.c
@@ -87,6 +87,13 @@ areadlink_with_size (char const *file, size_t size)
       if (link_length < buf_size)
         {
           buffer[link_length] = 0;
+          /* Shrink BUFFER before returning it.  */
+          if (link_length + 1 < buf_size)
+            {
+              char *shrinked_buffer = realloc (buffer, link_length + 1);
+              if (shrinked_buffer != NULL)
+                buffer = shrinked_buffer;
+            }
           return buffer;
         }
 
-- 
2.7.4