From: Collin Funk <collin.funk1@gmail.com>
Date: Fri, 10 Oct 2025 03:42:05 +0000 (-0700)
Subject: getline tests: Add a test for the glibc bug.
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=55e6cae9e8f0e133914d1e4ae25db07d913e6760;p=thirdparty%2Fgnulib.git

getline tests: Add a test for the glibc bug.

* tests/test-getline.c (main): Check that the buffer is terminated with
a NUL character when the first character read is EOF.
---

diff --git a/ChangeLog b/ChangeLog
index f3c4a487d8..07f0503f84 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2025-10-10  Collin Funk  <collin.funk1@gmail.com>
 
+	getline tests: Add a test for the glibc bug.
+	* tests/test-getline.c (main): Check that the buffer is terminated with
+	a NUL character when the first character read is EOF.
+
 	getline: Work around a glibc bug.
 	* m4/getline.m4 (gl_FUNC_GETLINE): Check that the buffer is terminated
 	with a NUL character when the first character read is EOF. Guess that
diff --git a/tests/test-getline.c b/tests/test-getline.c
index 66c44d5dc9..bc559c6dc5 100644
--- a/tests/test-getline.c
+++ b/tests/test-getline.c
@@ -84,7 +84,11 @@ main (void)
   ASSERT (memcmp (line, "d\0f", 4) == 0);
   ASSERT (3 < len);
 
+  /* Test that reading an EOF will terminate the buffer with a NUL
+     character.  */
   result = getline (&line, &len, f);
+  ASSERT (0 < len);
+  ASSERT (line[0] == '\0');
   ASSERT (result == -1);
 
   free (line);