Article View: gnu.gcc.bug
Article #6381Bug in layout_type found
From: Martin Ohmacht
Date: Fri, 08 Dec 1995 00:00
Date: Fri, 08 Dec 1995 00:00
38 lines
2047 bytes
2047 bytes
Hello,
I found something that seems to be a (minor) bug:
===============================================================================
*** gcc-2.7.2/stor-layout.c Wed Oct 4 00:15:07 1995
--- gcc-2.7.2/stor-layout.c.bug-free Fri Dec 8 19:17:41 1995
*************** layout_type (type)
*** 853,859 ****
!= ((TREE_INT_CST_LOW (DECL_SIZE (field)) + bitpos - 1)
/ BITS_PER_WORD)
/* But there is no problem if the field is entire words. */
! && TREE_INT_CST_LOW (DECL_SIZE (field)) % BITS_PER_WORD == 0)
goto record_lose;
}
--- 853,859 ----
!= ((TREE_INT_CST_LOW (DECL_SIZE (field)) + bitpos - 1)
/ BITS_PER_WORD)
/* But there is no problem if the field is entire words. */
! && TREE_INT_CST_LOW (DECL_SIZE (field)) % BITS_PER_WORD != 0)
goto record_lose;
}
===============================================================================
The buggy version fails to assign an integer mode to a fullword field of
a record but accepts a not aligned fullword. I think it was intended the
other way. I patched the gcc and it worked better.
Greetings,
Martin
______________________________________________________________________
Dipl.-Ing. Martin Ohmacht Universitaet Hannover
Laboratorium fuer
ohmacht@mst.uni-hannover.de Informationstechnologie
fax: +49-511-762-5051 Schneiderberg 32
phone: +49-511-762-5039 D-30167 Hannover
______________________________________________________________________
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 113d02,a9ed879033224d28,start X-Google-Attributes: gid113d02,public From: ohmacht@scoop.mst.uni-hannover.de (Martin Ohmacht) Subject: Bug in layout_type found Date: 1995/12/08 Message-ID: <9512081822.AA28356@scoop.mst.uni-hannover.de_> X-Deja-AN: 121283041 distribution: gnu sender: daemon@cis.ohio-state.edu organization: GNUs Not Usenet newsgroups: gnu.gcc.bug