[PATCHv2 1/9] getcwd: tweak comments

[Eric Blake]

* m4/getcwd-abort-bug.m4: Fix comments.
* m4/getcwd-path-max.m4: Likewise.
* m4/getcwd.m4: Likewise.

Signed-off-by: Eric Blake <address@hidden>
---
 ChangeLog              |    7 +++++++
 m4/getcwd-abort-bug.m4 |    4 ++--
 m4/getcwd-path-max.m4  |    4 ++--
 m4/getcwd.m4           |    4 +++-
 4 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 248d0f3..4c4b944 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2011-04-26  Eric Blake  <address@hidden>
+
+       getcwd: tweak comments
+       * m4/getcwd-abort-bug.m4: Fix comments.
+       * m4/getcwd-path-max.m4: Likewise.
+       * m4/getcwd.m4: Likewise.
+
 2011-04-26  Paul Eggert  <address@hidden>

        inttypes: also provide default values for 32-bit tests
diff --git a/m4/getcwd-abort-bug.m4 b/m4/getcwd-abort-bug.m4
index 21be828..f15181f 100644
--- a/m4/getcwd-abort-bug.m4
+++ b/m4/getcwd-abort-bug.m4
@@ -1,4 +1,4 @@
-# serial 2
+# serial 3
 # Determine whether getcwd aborts when the length of the working directory
 # name is unusually large.  Any length between 4k and 16k trigger the bug
 # when using glibc-2.4.90-9 or older.
@@ -58,7 +58,7 @@ main ()
   size_t d;

   /* The bug is triggered when PATH_MAX < getpagesize (), so skip
-     this relative expensive and invasive test if that's not true.  */
+     this relatively expensive and invasive test if that's not true.  */
   if (getpagesize () <= PATH_MAX)
     return 0;

diff --git a/m4/getcwd-path-max.m4 b/m4/getcwd-path-max.m4
index 2ab2645..feb0d4d 100644
--- a/m4/getcwd-path-max.m4
+++ b/m4/getcwd-path-max.m4
@@ -1,10 +1,10 @@
-# serial 15
+# serial 16
 # Check for several getcwd bugs with long file names.
 # If so, arrange to compile the wrapper function.

 # This is necessary for at least GNU libc on linux-2.4.19 and 2.4.20.
 # I've heard that this is due to a Linux kernel bug, and that it has
-# been fixed between 2.4.21-pre3 and 2.4.21-pre4.  */
+# been fixed between 2.4.21-pre3 and 2.4.21-pre4.

 # Copyright (C) 2003-2007, 2009-2011 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
diff --git a/m4/getcwd.m4 b/m4/getcwd.m4
index 7098056..0c7e20c 100644
--- a/m4/getcwd.m4
+++ b/m4/getcwd.m4
@@ -6,7 +6,7 @@
 # with or without modifications, as long as this notice is preserved.

 # Written by Paul Eggert.
-# serial 3
+# serial 4

 AC_DEFUN([gl_FUNC_GETCWD_NULL],
   [
@@ -52,6 +52,8 @@ AC_DEFUN([gl_FUNC_GETCWD_NULL],
         ]])])
 ])

+dnl Check for all known getcwd bugs; useful for a program likely to be
+dnl executed from an arbitrary location.
 AC_DEFUN([gl_FUNC_GETCWD],
 [
   AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
-- 
1.7.4.4