src/patches/glibc/glibc-rh615090.patch

   1 2010-07-27  Andreas Schwab  <schwab@redhat.com>
   2
   3         * manual/memory.texi (Malloc Tunable Parameters): Document
   4         M_PERTURB.
   5
   6 Index: glibc-2.12-2-gc4ccff1/manual/memory.texi
   7 ===================================================================
   8 --- glibc-2.12-2-gc4ccff1.orig/manual/memory.texi
   9 +++ glibc-2.12-2-gc4ccff1/manual/memory.texi
  10 @@ -702,6 +702,11 @@ be allocated via @code{mmap}.
  11  @item M_MMAP_MAX
  12  The maximum number of chunks to allocate with @code{mmap}.  Setting this
  13  to zero disables all use of @code{mmap}.
  14 +@item M_PERTURB
  15 +If non-zero, memory blocks are filled with values depending on some
  16 +low order bits of this parameter when they are allocated (except when
  17 +allocated by @code{calloc}) and freed.  This can be used to debug the
  18 +use of uninitialized or freed heap memory.
  19  @end table
  20
  21  @end deftypefun