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authorAndreas Schwab <schwab@redhat.com>2010-07-26 15:28:15 +0200
committerAndreas Schwab <schwab@redhat.com>2010-07-27 13:24:49 +0200
commitdeb9cabbf475da0b65d7acdb364987c4a15b4214 (patch)
tree637003842f5a6cc892edc58603e776a1c054f023 /manual/memory.texi
parent932ac045f0b3f57bf3c693920f4dac5009b8807e (diff)
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Document M_PERTURB
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diff --git a/manual/memory.texi b/manual/memory.texi
index 59ea1ee3425..db63c3313bf 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