Description:
For this test case the gfortran compiler is demanding that a threadprivate
variable declared and initialized in a main program must have the SAVE
attribute. However, the variable already has a default SAVE attribute by
virtue of its declaration & initialization in the main program.
The error message is incorrect, since SAVE is on by F95 default in this
test case.
The following statement comes from p. 86 of the OpenMP API Version 2.5 May 2005
in the last bullet found in lines 27-28:
" * A variable that appears in a threadprivate directive and is not declared
in the scope of a module must have the SAVE attribute"
However, the FORTRAN95 HANDBOOK states on p. 138:
Paragraph 3:
"Any object that is data initialized (in a DATA statement or a type
declaration statement) has the SAVE attribute by default."
Rules & Restrictions:
2. If SAVE appears in a main program as an attribute or a statement, it
has no effect.
> gfortran -v
Using built-in specs.
Target: x86_64-suse-linux
Configured with: ../xt-gcc-4.2.0/configure --prefix=/opt/gcc/4.2.0/snos
--disable-nls --libdir=/opt/gcc/4.2.0/snos/lib --enable-languages=c,c++,fortran
--with-gxx-include-dir=/opt/gcc/4.2.0/snos/include/g++
--with-slibdir=/opt/gcc/4.2.0/snos/lib --with-system-zlib --enable-shared
--enable-__cxa_atexit x86_64-suse-linux
Thread model: posix
gcc version 4.2.0 20070514 (rpm:4)
> cat bug2827.f90
! Derived from OpenMP test omp1/F2_6_2_8_5i.f90
use omp_lib
implicit none
integer, parameter :: NT = 4
integer :: a = 1
!$omp threadprivate(a)
!$ call omp_set_num_threads(NT)
!$omp parallel
print *, omp_get_thread_num(), a
!$omp end parallel
END
> ftn -O3 -fopenmp -c bug2827.f90
/opt/xt-pe/2.1/bin/snos64/ftn: INFO: linux target is being used
bug2827.f90:5.18:
integer :: a = 1
1
Error: Threadprivate at (1) isn't SAVEd
------
Note: ftn is an alias for:
/opt/gcc/4.2.0/bin/../snos/bin/gfortran -static -v
-I/opt/xt-mpt/2.1/mpich2-64/GP/include -I/opt/xt-mpt/2.1/mpich2-64/GP/include
-L/opt/xt-mpt/2.1/mpich2-64/GP/lib -I/opt/acml/3.6.1/gnu64/include
-I/opt/xt-libsci/10.1.0/gnu/snos64/include
-I/opt/xt-libsci/10.1.0/gnu/snos64/include/superlu
-I/opt/xt-mpt/2.1/sma/P/include -L/opt/acml/3.6.1/gnu64/lib
-L/opt/xt-libsci/10.1.0/gnu/snos64/lib -L/opt/xt-mpt/2.1/sma/P/lib -lmpichf90
-lsci -lacml -lsma -lmpichf90 -lmpich -lrt -D__CRAYXT_COMPUTE_LINUX_TARGET
-D__TARGET_LINUX__ -fno-second-underscore
-I/notbackedup/users/rsrel/rs64.DEV.070604.Mon/install/include
-I/opt/xt-catamount/2.1/catamount/linux/include -I/opt/xt-service/2.1/include
-L/notbackedup/users/rsrel/rs64.DEV.070604.Mon/install/lib/snos64
-L/opt/xt-pe/2.1/cnos/linux/64/lib -L/opt/xt-mpt/2.1/lib/snos64
-L/opt/xt-service/2.1/lib/snos64 -Wl,--start -lpct -lalpslli -lalpsutil
-lportals -lpthread -Wl,--end -lgfortranbegin -lgfortran -lm
--
Summary: GFORTRAN MSG "ERROR: THREADPRIVATE AT (1) ISN'T SAVED"
INCORRECT IN MAIN PGM
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: longb at cray dot com
GCC build triplet: x86_64-suse-linux
GCC host triplet: x86_64-suse-linux
GCC target triplet: x86_64-suse-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32359
