GNU C Library master sources branch, master, updated. glibc-2.12-77-gdeb9cab

schwab@sourceware.org schwab@sourceware.org
Tue Jul 27 11:25:00 GMT 2010


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http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=deb9cabbf475da0b65d7acdb364987c4a15b4214

commit deb9cabbf475da0b65d7acdb364987c4a15b4214
Author: Andreas Schwab <schwab@redhat.com>
Date:   Mon Jul 26 15:28:15 2010 +0200

    Document M_PERTURB

diff --git a/ChangeLog b/ChangeLog
index 6603a56..a5baf6c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-07-27  Andreas Schwab  <schwab@redhat.com>
+
+	* manual/memory.texi (Malloc Tunable Parameters): Document
+	M_PERTURB.
+
 2010-07-26  Roland McGrath  <roland@redhat.com>
 
 	[BZ #11840]
diff --git a/manual/memory.texi b/manual/memory.texi
index 59ea1ee..db63c33 100644
--- a/manual/memory.texi
+++ b/manual/memory.texi
@@ -702,6 +702,11 @@ be allocated via @code{mmap}.
 @item M_MMAP_MAX
 The maximum number of chunks to allocate with @code{mmap}.  Setting this
 to zero disables all use of @code{mmap}.
+@item M_PERTURB
+If non-zero, memory blocks are filled with values depending on some
+low order bits of this parameter when they are allocated (except when
+allocated by @code{calloc}) and freed.  This can be used to debug the
+use of uninitialized or freed heap memory.
 @end table
 
 @end deftypefun

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog          |    5 +++++
 manual/memory.texi |    5 +++++
 2 files changed, 10 insertions(+), 0 deletions(-)


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