From deb9cabbf475da0b65d7acdb364987c4a15b4214 Mon Sep 17 00:00:00 2001 From: Andreas Schwab Date: Mon, 26 Jul 2010 15:28:15 +0200 Subject: Document M_PERTURB --- ChangeLog | 5 +++++ manual/memory.texi | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/ChangeLog b/ChangeLog index 6603a56028..a5baf6cbe0 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2010-07-27 Andreas Schwab + + * manual/memory.texi (Malloc Tunable Parameters): Document + M_PERTURB. + 2010-07-26 Roland McGrath [BZ #11840] diff --git a/manual/memory.texi b/manual/memory.texi index 59ea1ee342..db63c3313b 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 -- cgit v1.2.3