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* [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array
@ 2003-11-30 16:48 gcc-bug at vogtner dot de
2003-11-30 16:49 ` [Bug fortran/13240] " gcc-bug at vogtner dot de
` (11 more replies)
0 siblings, 12 replies; 13+ messages in thread
From: gcc-bug at vogtner dot de @ 2003-11-30 16:48 UTC (permalink / raw)
To: gcc-bugs
The base address of a local (automatic) adjustable DOUBLE PRECISION
array ist not properly aligned. Please take a look into the files
enclosed. The program reports:
ADDRESS OF DBLE : BFDFF54C
indicating that the local array is only a multiple of 4 instead
of 8 bytes.
As a workaround a tried -mpreferred-stack-boundary=n for some n.
Only for n = 2 and 3 (in case of GCC 3.2.2 and 3.3.2) and only for n = 2
in case of GCC 2.95.3 the array is correctly aligned.
--
Summary: wrong alignment of automatic adjustable DOUBLE PRECISION
array
Product: gcc
Version: 3.3.2
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: gcc-bug at vogtner dot de
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug fortran/13240] wrong alignment of automatic adjustable DOUBLE PRECISION array
2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
@ 2003-11-30 16:49 ` gcc-bug at vogtner dot de
2003-11-30 16:50 ` gcc-bug at vogtner dot de
` (10 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: gcc-bug at vogtner dot de @ 2003-11-30 16:49 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From gcc-bug at vogtner dot de 2003-11-30 16:49 -------
Created an attachment (id=5241)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=5241&action=view)
test program (FORTRAN)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug fortran/13240] wrong alignment of automatic adjustable DOUBLE PRECISION array
2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
2003-11-30 16:49 ` [Bug fortran/13240] " gcc-bug at vogtner dot de
@ 2003-11-30 16:50 ` gcc-bug at vogtner dot de
2003-11-30 19:21 ` [Bug fortran/13240] [g77] " pinskia at gcc dot gnu dot org
` (9 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: gcc-bug at vogtner dot de @ 2003-11-30 16:50 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From gcc-bug at vogtner dot de 2003-11-30 16:50 -------
Created an attachment (id=5242)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=5242&action=view)
shell script to run tests
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug fortran/13240] [g77] wrong alignment of automatic adjustable DOUBLE PRECISION array
2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
2003-11-30 16:49 ` [Bug fortran/13240] " gcc-bug at vogtner dot de
2003-11-30 16:50 ` gcc-bug at vogtner dot de
@ 2003-11-30 19:21 ` pinskia at gcc dot gnu dot org
2003-11-30 19:28 ` toon at moene dot indiv dot nluug dot nl
` (8 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2003-11-30 19:21 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Summary|wrong alignment of automatic|[g77] wrong alignment of
|adjustable DOUBLE PRECISION |automatic adjustable DOUBLE
|array |PRECISION array
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug fortran/13240] [g77] wrong alignment of automatic adjustable DOUBLE PRECISION array
2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
` (2 preceding siblings ...)
2003-11-30 19:21 ` [Bug fortran/13240] [g77] " pinskia at gcc dot gnu dot org
@ 2003-11-30 19:28 ` toon at moene dot indiv dot nluug dot nl
2003-11-30 20:27 ` gcc-bug at vogtner dot de
` (7 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: toon at moene dot indiv dot nluug dot nl @ 2003-11-30 19:28 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From toon at moene dot indiv dot nluug dot nl 2003-11-30 19:28 -------
Could you try with the compiler flag -malign-double to get double
precision variables aligned on 8-byte boundaries ?
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug fortran/13240] [g77] wrong alignment of automatic adjustable DOUBLE PRECISION array
2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
` (3 preceding siblings ...)
2003-11-30 19:28 ` toon at moene dot indiv dot nluug dot nl
@ 2003-11-30 20:27 ` gcc-bug at vogtner dot de
2003-11-30 20:31 ` pinskia at gcc dot gnu dot org
` (6 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: gcc-bug at vogtner dot de @ 2003-11-30 20:27 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From gcc-bug at vogtner dot de 2003-11-30 20:27 -------
test.sh does already test -malign-double:
/usrB/softw1/3.3.2-2.3.2/bin/g77
misalignment:
g77 : ADDRESS OF DBLE : BFDFF56C
g77 -O: ADDRESS OF DBLE : BFDFF57C
g77 -O1: ADDRESS OF DBLE : BFDFF57C
g77 -O2: ADDRESS OF DBLE : BFDFF56C
g77 -O3: ADDRESS OF DBLE : BFDFF56C
g77 -O4: ADDRESS OF DBLE : BFDFF56C
g77 -malign-double : ADDRESS OF DBLE : BFDFF56C
g77 -malign-double -O: ADDRESS OF DBLE : BFDFF57C
g77 -malign-double -O1: ADDRESS OF DBLE : BFDFF57C
g77 -malign-double -O2: ADDRESS OF DBLE : BFDFF56C
g77 -malign-double -O3: ADDRESS OF DBLE : BFDFF56C
g77 -malign-double -O4: ADDRESS OF DBLE : BFDFF56C
workaround: [this is all mit malign-double:]
g77 -mprefStckBndry=2: ADDRESS OF DBLE : BFDFF570
g77 -mprefStckBndry=3: ADDRESS OF DBLE : BFDFF570
g77 -mprefStckBndry=4: ADDRESS OF DBLE : BFDFF56C
g77 -mprefStckBndry=5: ADDRESS OF DBLE : BFDFF55C
g77 -mprefStckBndry=6: ADDRESS OF DBLE : BFDFF55C
g77 -mprefStckBndry=7: ADDRESS OF DBLE : BFDFF4DC
g77 -mprefStckBndry=8: ADDRESS OF DBLE : BFDFF3DC
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug fortran/13240] [g77] wrong alignment of automatic adjustable DOUBLE PRECISION array
2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
` (4 preceding siblings ...)
2003-11-30 20:27 ` gcc-bug at vogtner dot de
@ 2003-11-30 20:31 ` pinskia at gcc dot gnu dot org
2003-11-30 21:20 ` gcc-bug at vogtner dot de
` (5 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2003-11-30 20:31 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2003-11-30 20:31 -------
This is a dup of bug 10395, the problem is that main is not aligned correctly at all, other functions
are okay.
*** This bug has been marked as a duplicate of 10395 ***
--
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug fortran/13240] [g77] wrong alignment of automatic adjustable DOUBLE PRECISION array
2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
` (5 preceding siblings ...)
2003-11-30 20:31 ` pinskia at gcc dot gnu dot org
@ 2003-11-30 21:20 ` gcc-bug at vogtner dot de
2003-11-30 21:22 ` gcc-bug at vogtner dot de
` (4 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: gcc-bug at vogtner dot de @ 2003-11-30 21:20 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From gcc-bug at vogtner dot de 2003-11-30 21:20 -------
This is hard to believe! I have modified the program. The mis-alignment only
occurs, if adjustable arrays are used. I don't think that #10395 applies here.
#> g77 -malign-double g77-3.3.2-misaligned-dp-array-bug-1.f
#> a.out
08049D20
0A049D20
0C049D20
ADDRESS OF DBLE : BFFFF548 <-- scalar dp variable: OK
ADDRESS OF DBLE : BFFFF520 <-- automatic array (fixed size): OK
ADDRESS OF DBLE : BFFFE4FC <-- adjustable array: mis-aligned
ADDRESS OF DBLE : BFDFE4FC <-- adjustable array: mis-aligned
now:
#> g77 -malign-double -mpreferred-stack-boundary=3
g77-3.3.2-misaligned-dp-array-bug-1.f
#> a.out
08049D40
0A049D40
0C049D40
ADDRESS OF DBLE : BFFFF550
ADDRESS OF DBLE : BFFFF530
ADDRESS OF DBLE : BFFFE510 <-- OK
ADDRESS OF DBLE : BFDFE500 <-- OK
and also ok is preferred stack boundary of 2.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|DUPLICATE |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug fortran/13240] [g77] wrong alignment of automatic adjustable DOUBLE PRECISION array
2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
` (6 preceding siblings ...)
2003-11-30 21:20 ` gcc-bug at vogtner dot de
@ 2003-11-30 21:22 ` gcc-bug at vogtner dot de
2003-12-30 7:00 ` bdavis9659 at comcast dot net
` (3 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: gcc-bug at vogtner dot de @ 2003-11-30 21:22 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From gcc-bug at vogtner dot de 2003-11-30 21:22 -------
Created an attachment (id=5245)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=5245&action=view)
new test case
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug fortran/13240] [g77] wrong alignment of automatic adjustable DOUBLE PRECISION array
2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
` (7 preceding siblings ...)
2003-11-30 21:22 ` gcc-bug at vogtner dot de
@ 2003-12-30 7:00 ` bdavis9659 at comcast dot net
2003-12-30 8:32 ` bdavis9659 at comcast dot net
` (2 subsequent siblings)
11 siblings, 0 replies; 13+ messages in thread
From: bdavis9659 at comcast dot net @ 2003-12-30 7:00 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From bdavis9659 at comcast dot net 2003-12-30 03:45 -------
Created an attachment (id=5380)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=5380&action=view)
Candidate test for inclusion into g77 testsuite
This is the smallest example that I could make to demonstrate this problem.
Calls "abort" on failure. Ready to be include in f77 test suite.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug fortran/13240] [g77] wrong alignment of automatic adjustable DOUBLE PRECISION array
2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
` (8 preceding siblings ...)
2003-12-30 7:00 ` bdavis9659 at comcast dot net
@ 2003-12-30 8:32 ` bdavis9659 at comcast dot net
2003-12-30 9:47 ` pinskia at gcc dot gnu dot org
2003-12-30 16:14 ` toon at moene dot indiv dot nluug dot nl
11 siblings, 0 replies; 13+ messages in thread
From: bdavis9659 at comcast dot net @ 2003-12-30 8:32 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From bdavis9659 at comcast dot net 2003-12-30 03:50 -------
Looks like this has been fixed. Original test case's work fine with:
GNU Fortran (GCC) 3.4.0 20031229 (experimental)
and they sure failed with gcc-3.2.2
--bud davis
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug fortran/13240] [g77] wrong alignment of automatic adjustable DOUBLE PRECISION array
2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
` (9 preceding siblings ...)
2003-12-30 8:32 ` bdavis9659 at comcast dot net
@ 2003-12-30 9:47 ` pinskia at gcc dot gnu dot org
2003-12-30 16:14 ` toon at moene dot indiv dot nluug dot nl
11 siblings, 0 replies; 13+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2003-12-30 9:47 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2003-12-30 04:20 -------
Fixed for 3.4.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |3.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
* [Bug fortran/13240] [g77] wrong alignment of automatic adjustable DOUBLE PRECISION array
2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
` (10 preceding siblings ...)
2003-12-30 9:47 ` pinskia at gcc dot gnu dot org
@ 2003-12-30 16:14 ` toon at moene dot indiv dot nluug dot nl
11 siblings, 0 replies; 13+ messages in thread
From: toon at moene dot indiv dot nluug dot nl @ 2003-12-30 16:14 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From toon at moene dot indiv dot nluug dot nl 2003-12-30 13:45 -------
The test suite entry is OK with me. Can you commit it ?
Thanks,
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13240
^ permalink raw reply [flat|nested] 13+ messages in thread
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2003-11-30 16:48 [Bug fortran/13240] New: wrong alignment of automatic adjustable DOUBLE PRECISION array gcc-bug at vogtner dot de
2003-11-30 16:49 ` [Bug fortran/13240] " gcc-bug at vogtner dot de
2003-11-30 16:50 ` gcc-bug at vogtner dot de
2003-11-30 19:21 ` [Bug fortran/13240] [g77] " pinskia at gcc dot gnu dot org
2003-11-30 19:28 ` toon at moene dot indiv dot nluug dot nl
2003-11-30 20:27 ` gcc-bug at vogtner dot de
2003-11-30 20:31 ` pinskia at gcc dot gnu dot org
2003-11-30 21:20 ` gcc-bug at vogtner dot de
2003-11-30 21:22 ` gcc-bug at vogtner dot de
2003-12-30 7:00 ` bdavis9659 at comcast dot net
2003-12-30 8:32 ` bdavis9659 at comcast dot net
2003-12-30 9:47 ` pinskia at gcc dot gnu dot org
2003-12-30 16:14 ` toon at moene dot indiv dot nluug dot nl
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