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* [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree
@ 2010-06-06 10:11 tkoenig at gcc dot gnu dot org
2010-06-06 10:11 ` [Bug fortran/44430] " tkoenig at gcc dot gnu dot org
` (12 more replies)
0 siblings, 13 replies; 14+ messages in thread
From: tkoenig at gcc dot gnu dot org @ 2010-06-06 10:11 UTC (permalink / raw)
To: gcc-bugs
This is with revision 160336.
$ cat > a.f90
subroutine foo(a,b)
real :: a(10), b(5)
a(1:5) = b
end
$ gfortran -fdump-parse-tree a.f90 | head -40
Namespace: A-H: (REAL 4) I-N: (INTEGER 4) O-Z: (REAL 4)
procedure name = foo
symtree: __convert_i4_i8 Ambig 0
symbol __convert_i4_i8 (INTEGER 8)(PROCEDURE UNKNOWN-INTENT
UNKNOWN-ACCESS UNKNOWN-PROC UNKNOWN FUNCTION ELEMENTAL PURE)
result: __convert_i4_i8
symtree: a Ambig 0
symbol a (REAL 4)(VARIABLE UNKNOWN-INTENT UNKNOWN-ACCESS UNKNOWN-PROC
UNKNOWN DIMENSION DUMMY)
Array spec:(1 [0] AS_EXPLICIT 1 10 )
symtree: b Ambig 0
symbol b (REAL 4)(VARIABLE UNKNOWN-INTENT UNKNOWN-ACCESS UNKNOWN-PROC
UNKNOWN DIMENSION DUMMY)
Array spec:(1 [0] AS_EXPLICIT 1 5 )
symtree: foo Ambig 0
symbol foo (UNKNOWN 0)(PROCEDURE UNKNOWN-INTENT UNKNOWN-ACCESS
UNKNOWN-PROC UNKNOWN SUBROUTINE)
Formal arglist: a b
Formal namespace
Namespace: A-H: (REAL 4) I-N: (INTEGER 4) O-Z: (REAL 4)
procedure name = foo
symtree: __convert_i4_i8 Ambig 0
symbol __convert_i4_i8 (INTEGER 8)(PROCEDURE UNKNOWN-INTENT
UNKNOWN-ACCESS UNKNOWN-PROC UNKNOWN FUNCTION ELEMENTAL PURE)
result: __convert_i4_i8
symtree: a Ambig 0
symbol a (REAL 4)(VARIABLE UNKNOWN-INTENT UNKNOWN-ACCESS UNKNOWN-PROC
UNKNOWN DIMENSION DUMMY)
Array spec:(1 [0] AS_EXPLICIT 1 10 )
symtree: b Ambig 0
symbol b (REAL 4)(VARIABLE UNKNOWN-INTENT UNKNOWN-ACCESS UNKNOWN-PROC
UNKNOWN DIMENSION DUMMY)
Array spec:(1 [0] AS_EXPLICIT 1 5 )
symtree: foo Ambig 0
symbol foo (UNKNOWN 0)(PROCEDURE UNKNOWN-INTENT UNKNOWN-ACCESS
UNKNOWN-PROC UNKNOWN SUBROUTINE)
Formal arglist: a b
Formal namespace
Namespace: A-H: (REAL 4) I-N: (INTEGER 4) O-Z: (REAL 4)
procedure name = foo
symtree: __convert_i4_i8 Ambig 0
symbol __convert_i4_i8 (INTEGER 8)(PROCEDURE UNKNOWN-INTENT
UNKNOWN-ACCESS UNKNOWN-PROC UNKNOWN FUNCTION ELEMENTAL PURE)
result: __convert_i4_i8
symtree: a Ambig 0
symbol a (REAL 4)(VARIABLE UNKNOWN-INTENT UNKNOWN-ACCESS
UNKNOWN-PROC UNKNOWN DIMENSION DUMMY)
Array spec:(1 [0] AS_EXPLICIT 1 10 )
symtree: b Ambig 0
symbol b (REAL 4)(VARIABLE UNKNOWN-INTENT UNKNOWN-ACCESS
UNKNOWN-PROC UNKNOWN DIMENSION DUMMY)
Array spec:(1 [0] AS_EXPLICIT 1 5 )
... and so on.
--
Summary: [4.6 Regression] Infinite recursion with -fdump-parse-
tree
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: tkoenig at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
@ 2010-06-06 10:11 ` tkoenig at gcc dot gnu dot org
2010-06-06 10:32 ` dominiq at lps dot ens dot fr
` (11 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: tkoenig at gcc dot gnu dot org @ 2010-06-06 10:11 UTC (permalink / raw)
To: gcc-bugs
--
tkoenig at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.6.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
2010-06-06 10:11 ` [Bug fortran/44430] " tkoenig at gcc dot gnu dot org
@ 2010-06-06 10:32 ` dominiq at lps dot ens dot fr
2010-06-06 11:22 ` [Bug fortran/44430] [4.5/4.6 " tkoenig at gcc dot gnu dot org
` (10 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: dominiq at lps dot ens dot fr @ 2010-06-06 10:32 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from dominiq at lps dot ens dot fr 2010-06-06 10:32 -------
gcc version 4.4.4 gives
Namespace: A-H: (REAL 4) I-N: (INTEGER 4) O-Z: (REAL 4)
procedure name = foo
symtree: __convert_i4_i8 Ambig 0
symbol __convert_i4_i8 (INTEGER 8)(PROCEDURE UNKNOWN-INTENT
UNKNOWN-ACCESS UNKNOWN-PROC UNKNOWN FUNCTION ELEMENTAL PURE)
symtree: a Ambig 0
symbol a (REAL 4)(VARIABLE UNKNOWN-INTENT UNKNOWN-ACCESS UNKNOWN-PROC
UNKNOWN DIMENSION DUMMY)
Array spec:(1 AS_EXPLICIT 1 10 )
symtree: b Ambig 0
symbol b (REAL 4)(VARIABLE UNKNOWN-INTENT UNKNOWN-ACCESS UNKNOWN-PROC
UNKNOWN DIMENSION DUMMY)
Array spec:(1 AS_EXPLICIT 1 5 )
symtree: foo Ambig 0
symbol foo (UNKNOWN 0)(PROCEDURE UNKNOWN-INTENT UNKNOWN-ACCESS
UNKNOWN-PROC UNKNOWN SUBROUTINE)
Formal arglist: a b
ASSIGN foo:a(1_8:5_8) foo:b(FULL)
Namespace: A-H: (REAL 4) I-N: (INTEGER 4) O-Z: (REAL 4)
procedure name = MAIN__
symtree: MAIN__ Ambig 0
symbol MAIN__ (UNKNOWN 0)(PROGRAM UNKNOWN-INTENT PUBLIC UNKNOWN-PROC
UNKNOWN SUBROUTINE)
The infinite recursion occurs also for gcc version 4.5.0.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.5/4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
2010-06-06 10:11 ` [Bug fortran/44430] " tkoenig at gcc dot gnu dot org
2010-06-06 10:32 ` dominiq at lps dot ens dot fr
@ 2010-06-06 11:22 ` tkoenig at gcc dot gnu dot org
2010-06-06 20:15 ` tkoenig at gcc dot gnu dot org
` (9 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: tkoenig at gcc dot gnu dot org @ 2010-06-06 11:22 UTC (permalink / raw)
To: gcc-bugs
--
tkoenig at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Known to fail| |4.5.0 4.6.0
Known to work| |4.4.1
Last reconfirmed|0000-00-00 00:00:00 |2010-06-06 11:22:49
date| |
Summary|[4.6 Regression] Infinite |[4.5/4.6 Regression]
|recursion with -fdump-parse-|Infinite recursion with -
|tree |fdump-parse-tree
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.5/4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
` (2 preceding siblings ...)
2010-06-06 11:22 ` [Bug fortran/44430] [4.5/4.6 " tkoenig at gcc dot gnu dot org
@ 2010-06-06 20:15 ` tkoenig at gcc dot gnu dot org
2010-06-06 20:39 ` dominiq at lps dot ens dot fr
` (8 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: tkoenig at gcc dot gnu dot org @ 2010-06-06 20:15 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from tkoenig at gcc dot gnu dot org 2010-06-06 20:15 -------
This was between rev. 149577 (works) and rev. 149607 (does not work).
Still narrowing it down a bit.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.5/4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
` (3 preceding siblings ...)
2010-06-06 20:15 ` tkoenig at gcc dot gnu dot org
@ 2010-06-06 20:39 ` dominiq at lps dot ens dot fr
2010-06-06 20:52 ` tkoenig at gcc dot gnu dot org
` (7 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: dominiq at lps dot ens dot fr @ 2010-06-06 20:39 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from dominiq at lps dot ens dot fr 2010-06-06 20:39 -------
> This was between rev. 149577 (works) and rev. 149607 (does not work).
The only candidate I see is 149586.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.5/4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
` (4 preceding siblings ...)
2010-06-06 20:39 ` dominiq at lps dot ens dot fr
@ 2010-06-06 20:52 ` tkoenig at gcc dot gnu dot org
2010-06-06 21:31 ` janus at gcc dot gnu dot org
` (6 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: tkoenig at gcc dot gnu dot org @ 2010-06-06 20:52 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from tkoenig at gcc dot gnu dot org 2010-06-06 20:52 -------
I agree. Rev. 149586 is:
2009-07-13 Janus Weil <janus@gcc.gnu.org>
PR fortran/40646
* module.c (mio_symbol): If the symbol has formal arguments,
the formal namespace will be present.
* resolve.c (resolve_actual_arglist): Correctly handle 'called'
procedure pointer components as actual arguments.
(resolve_fl_derived,resolve_symbol): Make sure the formal namespace
is present.
* trans-expr.c (gfc_conv_procedure_call): Correctly handle the formal
arguments of procedure pointer components.
(nothing else suspicious in that range.
Janus?
--
tkoenig at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |janus at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.5/4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
` (5 preceding siblings ...)
2010-06-06 20:52 ` tkoenig at gcc dot gnu dot org
@ 2010-06-06 21:31 ` janus at gcc dot gnu dot org
2010-06-06 21:46 ` janus at gcc dot gnu dot org
` (5 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: janus at gcc dot gnu dot org @ 2010-06-06 21:31 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from janus at gcc dot gnu dot org 2010-06-06 21:31 -------
I'm afraid you're right. r149586 indeed seems to be the culprit. The bug goes
away when reverting a part of that commit, more precisely this one:
Index: gcc/fortran/resolve.c
===================================================================
--- gcc/fortran/resolve.c (revision 160347)
+++ gcc/fortran/resolve.c (working copy)
@@ -11661,20 +11655,6 @@ resolve_symbol (gfc_symbol *sym)
&& !sym->attr.contained && !sym->attr.intrinsic)
gfc_resolve (sym->formal_ns);
- /* Make sure the formal namespace is present. */
- if (sym->formal && !sym->formal_ns)
- {
- gfc_formal_arglist *formal = sym->formal;
- while (formal && !formal->sym)
- formal = formal->next;
-
- if (formal)
- {
- sym->formal_ns = formal->sym->ns;
- sym->formal_ns->refs++;
- }
- }
-
/* Check threadprivate restrictions. */
if (sym->attr.threadprivate && !sym->attr.save && !sym->ns->save_all
&& (!sym->attr.in_common
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.5/4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
` (6 preceding siblings ...)
2010-06-06 21:31 ` janus at gcc dot gnu dot org
@ 2010-06-06 21:46 ` janus at gcc dot gnu dot org
2010-06-06 21:46 ` janus at gcc dot gnu dot org
` (4 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: janus at gcc dot gnu dot org @ 2010-06-06 21:46 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from janus at gcc dot gnu dot org 2010-06-06 21:45 -------
A simple way to fix this:
Index: gcc/fortran/dump-parse-tree.c
===================================================================
--- gcc/fortran/dump-parse-tree.c (revision 160347)
+++ gcc/fortran/dump-parse-tree.c (working copy)
@@ -853,7 +853,7 @@ show_symbol (gfc_symbol *sym)
}
}
- if (sym->formal_ns)
+ if (sym->formal_ns && (sym->formal_ns != sym->ns))
{
show_indent ();
fputs ("Formal namespace", dumpfile);
I'm not 100% sure yet if this is the *proper* way, but I'll try to find out.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.5/4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
` (7 preceding siblings ...)
2010-06-06 21:46 ` janus at gcc dot gnu dot org
@ 2010-06-06 21:46 ` janus at gcc dot gnu dot org
2010-06-06 21:51 ` janus at gcc dot gnu dot org
` (3 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: janus at gcc dot gnu dot org @ 2010-06-06 21:46 UTC (permalink / raw)
To: gcc-bugs
--
janus at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |janus at gcc dot gnu dot org
|dot org |
Status|NEW |ASSIGNED
Last reconfirmed|2010-06-06 11:22:49 |2010-06-06 21:46:01
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.5/4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
` (8 preceding siblings ...)
2010-06-06 21:46 ` janus at gcc dot gnu dot org
@ 2010-06-06 21:51 ` janus at gcc dot gnu dot org
2010-06-09 18:38 ` janus at gcc dot gnu dot org
` (2 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: janus at gcc dot gnu dot org @ 2010-06-06 21:51 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from janus at gcc dot gnu dot org 2010-06-06 21:50 -------
(In reply to comment #5)
> The bug goes away when reverting a part of that commit
Of course simply reverting that part causes a couple of regressions, e.g.
proc_ptr_1,10,22 and others.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.5/4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
` (9 preceding siblings ...)
2010-06-06 21:51 ` janus at gcc dot gnu dot org
@ 2010-06-09 18:38 ` janus at gcc dot gnu dot org
2010-06-12 4:02 ` janus at gcc dot gnu dot org
2010-06-12 4:03 ` janus at gcc dot gnu dot org
12 siblings, 0 replies; 14+ messages in thread
From: janus at gcc dot gnu dot org @ 2010-06-09 18:38 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from janus at gcc dot gnu dot org 2010-06-09 18:38 -------
Subject: Bug 44430
Author: janus
Date: Wed Jun 9 18:38:11 2010
New Revision: 160504
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=160504
Log:
2010-06-09 Janus Weil <janus@gcc.gnu.org>
PR fortran/44430
* dump-parse-tree.c (show_symbol): Avoid infinite loop.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/dump-parse-tree.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.5/4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
` (10 preceding siblings ...)
2010-06-09 18:38 ` janus at gcc dot gnu dot org
@ 2010-06-12 4:02 ` janus at gcc dot gnu dot org
2010-06-12 4:03 ` janus at gcc dot gnu dot org
12 siblings, 0 replies; 14+ messages in thread
From: janus at gcc dot gnu dot org @ 2010-06-12 4:02 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from janus at gcc dot gnu dot org 2010-06-12 04:02 -------
Subject: Bug 44430
Author: janus
Date: Sat Jun 12 04:02:27 2010
New Revision: 160645
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=160645
Log:
2010-06-12 Janus Weil <janus@gcc.gnu.org>
PR fortran/44430
* dump-parse-tree.c (show_symbol): Avoid infinite loop.
Modified:
branches/gcc-4_5-branch/gcc/fortran/ChangeLog
branches/gcc-4_5-branch/gcc/fortran/dump-parse-tree.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug fortran/44430] [4.5/4.6 Regression] Infinite recursion with -fdump-parse-tree
2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
` (11 preceding siblings ...)
2010-06-12 4:02 ` janus at gcc dot gnu dot org
@ 2010-06-12 4:03 ` janus at gcc dot gnu dot org
12 siblings, 0 replies; 14+ messages in thread
From: janus at gcc dot gnu dot org @ 2010-06-12 4:03 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from janus at gcc dot gnu dot org 2010-06-12 04:03 -------
Fixed on trunk and 4.5. Closing.
--
janus at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44430
^ permalink raw reply [flat|nested] 14+ messages in thread
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2010-06-06 10:11 [Bug fortran/44430] New: [4.6 Regression] Infinite recursion with -fdump-parse-tree tkoenig at gcc dot gnu dot org
2010-06-06 10:11 ` [Bug fortran/44430] " tkoenig at gcc dot gnu dot org
2010-06-06 10:32 ` dominiq at lps dot ens dot fr
2010-06-06 11:22 ` [Bug fortran/44430] [4.5/4.6 " tkoenig at gcc dot gnu dot org
2010-06-06 20:15 ` tkoenig at gcc dot gnu dot org
2010-06-06 20:39 ` dominiq at lps dot ens dot fr
2010-06-06 20:52 ` tkoenig at gcc dot gnu dot org
2010-06-06 21:31 ` janus at gcc dot gnu dot org
2010-06-06 21:46 ` janus at gcc dot gnu dot org
2010-06-06 21:46 ` janus at gcc dot gnu dot org
2010-06-06 21:51 ` janus at gcc dot gnu dot org
2010-06-09 18:38 ` janus at gcc dot gnu dot org
2010-06-12 4:02 ` janus at gcc dot gnu dot org
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