public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug fortran/54923] New: Internal unit I/O error when using -malign-double @ 2012-10-13 23:35 gnu.0kn at gishpuppy dot com 2012-10-14 2:53 ` [Bug fortran/54923] " kargl at gcc dot gnu.org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: gnu.0kn at gishpuppy dot com @ 2012-10-13 23:35 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54923 Bug #: 54923 Summary: Internal unit I/O error when using -malign-double Classification: Unclassified Product: gcc Version: 4.6.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned@gcc.gnu.org ReportedBy: gnu.0kn@gishpuppy.com Reading from of integer from character string fails with Fortran runtime error: Internal unit I/O error when compiling with -malign-double. Background: This occurred when using the usual getarg(1,arg) construct and linking against FFTW3, which requires data alignment. Minimal example: ___ PROGRAM readtest IMPLICIT NONE CHARACTER*8 arg INTEGER inputarg arg=" 1 " READ(arg,*) inputarg PRINT *,"Argument supplied was: ", inputarg RETURN END ___ Compiling with gfortran without data alignment yields the expected result. Compiling with -malign-double in the compiler options yields runtime error. Thank you. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/54923] Internal unit I/O error when using -malign-double 2012-10-13 23:35 [Bug fortran/54923] New: Internal unit I/O error when using -malign-double gnu.0kn at gishpuppy dot com @ 2012-10-14 2:53 ` kargl at gcc dot gnu.org 2012-10-14 4:35 ` dominiq at lps dot ens.fr 2012-10-31 3:55 ` gnu.0kn at gishpuppy dot com 2 siblings, 0 replies; 4+ messages in thread From: kargl at gcc dot gnu.org @ 2012-10-14 2:53 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54923 kargl at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED CC| |kargl at gcc dot gnu.org Resolution| |INVALID --- Comment #1 from kargl at gcc dot gnu.org 2012-10-14 02:52:50 UTC --- You need to compile all libraries with -malign-double. This includes libgfortran. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/54923] Internal unit I/O error when using -malign-double 2012-10-13 23:35 [Bug fortran/54923] New: Internal unit I/O error when using -malign-double gnu.0kn at gishpuppy dot com 2012-10-14 2:53 ` [Bug fortran/54923] " kargl at gcc dot gnu.org @ 2012-10-14 4:35 ` dominiq at lps dot ens.fr 2012-10-31 3:55 ` gnu.0kn at gishpuppy dot com 2 siblings, 0 replies; 4+ messages in thread From: dominiq at lps dot ens.fr @ 2012-10-14 4:35 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54923 Dominique d'Humieres <dominiq at lps dot ens.fr> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|INVALID |DUPLICATE --- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-10-14 04:35:34 UTC --- > You need to compile all libraries with -malign-double. > This includes libgfortran. For a more detailed explanation you may look at pr31696 or pr45724 (also pr29562). *** This bug has been marked as a duplicate of bug 31696 *** ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug fortran/54923] Internal unit I/O error when using -malign-double 2012-10-13 23:35 [Bug fortran/54923] New: Internal unit I/O error when using -malign-double gnu.0kn at gishpuppy dot com 2012-10-14 2:53 ` [Bug fortran/54923] " kargl at gcc dot gnu.org 2012-10-14 4:35 ` dominiq at lps dot ens.fr @ 2012-10-31 3:55 ` gnu.0kn at gishpuppy dot com 2 siblings, 0 replies; 4+ messages in thread From: gnu.0kn at gishpuppy dot com @ 2012-10-31 3:55 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54923 --- Comment #3 from Drew <gnu.0kn at gishpuppy dot com> 2012-10-31 03:54:56 UTC --- After some googling I have found that ABI means application binary interface and how this affects the problem, thank you. I would be happy if someone could direct me to a tutorial on how to maintain two different ABIs on the same machine (so as not to break unaligned code elsewhere) and how to obtain it precompiled from a package maintainer. As another workaround, it has been indicated that $LD_PRELOAD may be used to link to an aligned malloc http://gcc.gnu.org/ml/fortran/2007-08/msg00320.html For information on how to do either I, and I'm sure many others attempting to call SSE functions or DMA transfers from 32 bit gfortran, would be very thankful. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2012-10-31 3:55 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-10-13 23:35 [Bug fortran/54923] New: Internal unit I/O error when using -malign-double gnu.0kn at gishpuppy dot com 2012-10-14 2:53 ` [Bug fortran/54923] " kargl at gcc dot gnu.org 2012-10-14 4:35 ` dominiq at lps dot ens.fr 2012-10-31 3:55 ` gnu.0kn at gishpuppy dot com
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).