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* [Bug fortran/44026] New: Segfault on internal read with -malign-double
@ 2010-05-07 14:29 Igor dot Katchaev at cern dot ch
2010-05-07 14:36 ` [Bug fortran/44026] " kargl at gcc dot gnu dot org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Igor dot Katchaev at cern dot ch @ 2010-05-07 14:29 UTC (permalink / raw)
To: gcc-bugs
Results and status of internal read are wrong if -malign-double
option is specified. Seen on (32 bit)
SLC4 gfortran 4.3.3 (i686-pc-linux-gnu),
Ubuntu9 gfortran 4.4.1 (Ubuntu 4.4.1-4ubuntu9),
rhel6 beta (4.4.3-1.el6.i386).
No problem on g77 and gfortran (4.1.2-44.EL4_8.1.i386) on SLC4,
gfortran (4.1.2-48.el5.i386) on slc5.
Under Ubuntu9 gfortran 4.4.1:
% gfortran -malign-double ttest.f && ./a.out
Segmentation fault
Under SLC4 gfortran 4.3.3:
% gfortran -malign-double ttest.f && ./a.out
Bad input 1 iostat -1
ival = 4685168
------ ttest.f ------
program ttest
implicit none
integer ival, ierr
character*1 str
str = "1"
read(str,*,iostat=ierr) ival
if (ierr.ne.0) then
write(0,*) 'Bad input ',str,' iostat',ierr
endif
write(0,*) 'ival = ', ival
end
------ EOF ------
Regards, Igor
--
Summary: Segfault on internal read with -malign-double
Product: gcc
Version: 4.4.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: Igor dot Katchaev at cern dot ch
GCC build triplet: gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu9)
GCC host triplet: Linux pcbecn 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12
05:23:0
GCC target triplet: i486-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44026
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/44026] Segfault on internal read with -malign-double
2010-05-07 14:29 [Bug fortran/44026] New: Segfault on internal read with -malign-double Igor dot Katchaev at cern dot ch
@ 2010-05-07 14:36 ` kargl at gcc dot gnu dot org
2010-05-07 14:47 ` Igor dot Katchaev at cern dot ch
2010-05-07 15:43 ` burnus at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: kargl at gcc dot gnu dot org @ 2010-05-07 14:36 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from kargl at gcc dot gnu dot org 2010-05-07 14:35 -------
DO NOT USE -malign-double.
You need to recompile gfortran's runtime library if this
option is to be used.
--
kargl at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |WONTFIX
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44026
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/44026] Segfault on internal read with -malign-double
2010-05-07 14:29 [Bug fortran/44026] New: Segfault on internal read with -malign-double Igor dot Katchaev at cern dot ch
2010-05-07 14:36 ` [Bug fortran/44026] " kargl at gcc dot gnu dot org
@ 2010-05-07 14:47 ` Igor dot Katchaev at cern dot ch
2010-05-07 15:43 ` burnus at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: Igor dot Katchaev at cern dot ch @ 2010-05-07 14:47 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from Igor dot Katchaev at cern dot ch 2010-05-07 14:47 -------
Subject: Re: Segfault on internal read with -malign-double
Ok, thanks.
Please remove duplicate #44027, sorry.
Igor
On Fri, 7 May 2010, kargl at gcc dot gnu dot org wrote:
------- Comment #1 from kargl at gcc dot gnu dot org 2010-05-07 14:35 -------
DO NOT USE -malign-double.
You need to recompile gfortran's runtime library if this
option is to be used.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44026
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/44026] Segfault on internal read with -malign-double
2010-05-07 14:29 [Bug fortran/44026] New: Segfault on internal read with -malign-double Igor dot Katchaev at cern dot ch
2010-05-07 14:36 ` [Bug fortran/44026] " kargl at gcc dot gnu dot org
2010-05-07 14:47 ` Igor dot Katchaev at cern dot ch
@ 2010-05-07 15:43 ` burnus at gcc dot gnu dot org
2 siblings, 0 replies; 4+ messages in thread
From: burnus at gcc dot gnu dot org @ 2010-05-07 15:43 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from burnus at gcc dot gnu dot org 2010-05-07 15:42 -------
*** Bug 44027 has been marked as a duplicate of this bug. ***
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44026
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-05-07 15:43 UTC | newest]
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2010-05-07 14:29 [Bug fortran/44026] New: Segfault on internal read with -malign-double Igor dot Katchaev at cern dot ch
2010-05-07 14:36 ` [Bug fortran/44026] " kargl at gcc dot gnu dot org
2010-05-07 14:47 ` Igor dot Katchaev at cern dot ch
2010-05-07 15:43 ` burnus at gcc dot gnu dot org
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