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author | Ludovic Courtès <ludo@gnu.org> | 2012-01-22 23:20:50 +0100 |
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committer | Ludovic Courtès <ludo@gnu.org> | 2012-01-22 23:23:44 +0100 |
commit | 0fc9040fa248c7d964966a568749d1398a457cd8 (patch) | |
tree | 77f8d07f8c48a3eec416c73df91e65cba234d4a6 /libguile/frames.c | |
parent | 17cc6e40a9ba5db9b0ff003a9a277ba43a72a067 (diff) | |
download | guile-0fc9040fa248c7d964966a568749d1398a457cd8.tar.gz |
Parenthesize and type `SCM_FRAME' macros; check layout of `scm_vm_frame'.
* libguile/frames.c: Add compile-time assertions on the layout of
`struct scm_vm_frame'.
(RELOC): Parenthesize and type VAL.
* libguile/frames.h (SCM_FRAME_STRUCT): Write in terms of
`SCM_FRAME_DATA_ADDRESS'.
(SCM_FRAME_DATA_ADDRESS): Parenthesize and type FP.
(SCM_FRAME_SET_DYNAMIC_LINK): Write in terms of
`SCM_FRAME_DYNAMIC_LINK'.
* libguile/vm.c (RELOC): Parenthesize and type SCM_P.
Diffstat (limited to 'libguile/frames.c')
-rw-r--r-- | libguile/frames.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/libguile/frames.c b/libguile/frames.c index 2e83cde9a..c7505b262 100644 --- a/libguile/frames.c +++ b/libguile/frames.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2001, 2009, 2010, 2011 Free Software Foundation, Inc. +/* Copyright (C) 2001, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License @@ -24,9 +24,16 @@ #include <string.h> #include "_scm.h" #include "frames.h" +#include <verify.h> + +/* Make sure assumptions on the layout of `struct scm_vm_frame' hold. */ +verify (sizeof (SCM) == sizeof (SCM *)); +verify (sizeof (struct scm_vm_frame) == 5 * sizeof (SCM)); +verify (offsetof (struct scm_vm_frame, dynamic_link) == 0); -#define RELOC(frame, val) (val + SCM_VM_FRAME_OFFSET (frame)) +#define RELOC(frame, val) \ + (((SCM *) (val)) + SCM_VM_FRAME_OFFSET (frame)) SCM scm_c_make_frame (SCM stack_holder, SCM *fp, SCM *sp, |