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From: "bdavis at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/42267] New: interaction between -finit-local-zero and -fno-automatic Date: Thu, 03 Dec 2009 19:14:00 -0000 [thread overview] Message-ID: <bug-42267-8277@http.gcc.gnu.org/bugzilla/> (raw) when using both flags, the variables are initialized on every function call. see the example below: bash-3.2$ cat lvar.f REAL A(100) PRINT*,'Expect them to be zero' CALL ONE PRINT*,'Expect them to be 1..10' CALL TWO PRINT*,'Expect them to be 1..10' CALL ONE END SUBROUTINE ONE REAL A(100) INTEGER I PRINT*,"Sub One Loc(a) is ",LOC(A) DO I=1,10 PRINT*,A(I) A(I) = I END DO END SUBROUTINE TWO REAL A(100) INTEGER I PRINT*,"Sub Two Loc(a) is ",LOC(A) DO I = 1,10 A(I) = 0 END DO END bash-3.2$ /usr/local/bin/gfortran -static lvar.f -finit-local-zero -fno-automatic bash-3.2$ /usr/local/bin/gfortran --version GNU Fortran (GCC) 4.4.1 Copyright (C) 2009 Free Software Foundation, Inc. GNU Fortran comes with NO WARRANTY, to the extent permitted by law. You may redistribute copies of GNU Fortran under the terms of the GNU General Public License. For more information about these matters, see the file named COPYING bash-3.2$ ./a.out Expect them to be zero Sub One Loc(a) is 135144832 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 Expect them to be 1..10 Sub Two Loc(a) is 135144416 Expect them to be 1..10 Sub One Loc(a) is 135144832 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 0.0000000 -- Summary: interaction between -finit-local-zero and -fno-automatic Product: gcc Version: 4.4.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: bdavis at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42267
next reply other threads:[~2009-12-03 19:14 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-12-03 19:14 bdavis at gcc dot gnu dot org [this message] 2009-12-03 19:16 ` [Bug fortran/42267] " bdavis at gcc dot gnu dot org 2009-12-03 20:06 ` burnus at gcc dot gnu dot org 2009-12-03 20:21 ` bdavis at gcc dot gnu dot org 2009-12-03 20:47 ` burnus at gcc dot gnu dot org 2009-12-03 21:14 ` rguenth at gcc dot gnu dot org 2009-12-03 21:19 ` burnus at gcc dot gnu dot org
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