error when the -malign-double flag is included in a Makefile

[jdelia at intec dot unl dot edu dot ar]

Hi gfortran developers,

I found a running crash with a rather big code and the following codes  
included in the "error.tgz" file is a reduced version.

From some further tests I found that the runnig crash is caused by  
the "-malign-double" flag only when it is used in a Makefile.

On the other hand, when each module and main program are compiled by  
turn and linked manualy, there is not any crashing.

Please, how can I do to fix this?

Regards, Jorge.

$ gfortran --version
 GNU Fortran (GCC) 4.4.0 20081021 (experimental) [trunk revision 141258]
 Copyright (C) 2008 Free Software Foundation, Inc.

$ cat /proc/version
Linux version 2.6.26.6-49.fc8 (mockbuild@x86-2.fedora.phx.redhat.com)  
(gcc version 4.1.2 20070925 (Red Hat 4.1.2-33)) #1 SMP

! -----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----
FIRST TEST. This is does not crash:

$ export A1="-Wall -std=f2003 -fPIC -O3 -fargument-alias"
$ export A2="-fno-second-underscore -mmmx -msse2 -msse"
$ export A3="-funroll-loops -ftree-vectorize -foptimize-sibling-calls"
$ export A4="-march=pentium4 -fomit-frame-pointer -malign-double"

$ gfortran $A1 $A2 $A3 $A4 -c m1.f90
$ gfortran $A1 $A2 $A3 $A4 -c m2.f90
$ gfortran $A1 $A2 $A3 $A4 -c test.f90
$ gfortran $A1 $A2 $A3 $A4 -o test.exe *.o

$ test.exe e0012 0 yes  (it is OK)

! -----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----
SECOND TEST. Here there is a run crashing

$ make
$ test.exe e0012 0 yes
$ Segmentation fault    (crash)

! -----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----
THIRD TEST. Makefile without the "-malign-double" flag.

$ make
$ test.exe e0012 0 yes  (it is OK again)

! -----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----
The Makefile has the following definitions (BTW, are OK?):

A1 := -Wall -std=f2003 -fPIC -O3 -fargument-alias
A2 := -fno-second-underscore -mmmx -msse2 -msse
A3 := -funroll-loops -ftree-vectorize -foptimize-sibling-calls
A4 := -march=pentium4 -fomit-frame-pointer -malign-double
AA := $(A1) $(A2) $(A3) $(A4)
! #executable
all:	m1.o \
	m2.o \
	test.o
	gfor $(AA) -o test.exe *.o
#module 1
m1.o: m1.f90
	gfor -v -c $(AA)
m1.mod: | m1.f90
	gfor -v -c $(AA) m1.f90
#module 2
m2.o: m2.f90 m2.mod
	gfor -v -c $(AA) $<
m2.mod: | m2.f90 m1.mod
	gfor -v -c $(AA) m2.f90
#main code
test.o: test.f90 m1.mod m2.mod
	gfor -v -c $(AA) $<
test.mod: | test.f90 m1.mod m2.mod
	gfor -v -c $(AA) test.f90
#end

----------------------------------------------------------------
This message was sent using IMP, the Internet Messaging Program.

Attachment: error.tgz
Description: application/compressed-tar