Commit 1fd3ead7 authored by simonmar's avatar simonmar

[project @ 2003-04-28 09:55:20 by simonmar]

Following the recent change to the layout of the StgRetDyn frame, we
now need to bump RESERVED_STACK_WORDS because this governs the amount
of room which is guaranteed to be available on the stack in the event
of a stack check failure.

This accounts for at least one cause of recent crashes in the HEAD.
parent 2721a6db
/* ----------------------------------------------------------------------------
* $Id: Constants.h,v 1.24 2003/03/25 16:19:55 sof Exp $
* $Id: Constants.h,v 1.25 2003/04/28 09:55:20 simonmar Exp $
*
* (c) The GHC Team, 1998-2002
*
......@@ -130,10 +130,16 @@
This must be large enough to accomodate the largest stack frame
pushed in one of the heap check fragments in HeapStackCheck.hc
(ie. currently the generic heap checks - 19 words).
(ie. currently the generic heap checks - 3 words for StgRetDyn,
18 words for the saved registers, see StgMacros.h).
In the event of an unboxed tuple or let-no-escape stack/heap check
failure, there will be other words on the stack which are covered
by the RET_DYN frame. These will have been accounted for by stack
checks however, so we don't need to allow for them here.
-------------------------------------------------------------------------- */
#define RESERVED_STACK_WORDS 19
#define RESERVED_STACK_WORDS 21
/* -----------------------------------------------------------------------------
Storage manager constants
......
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