* [PATCH] Support for the $_siginfo convenience var in sparc64
@ 2013-10-22 13:09 Jose E. Marchesi
2013-10-22 13:21 ` Pedro Alves
0 siblings, 1 reply; 5+ messages in thread
From: Jose E. Marchesi @ 2013-10-22 13:09 UTC (permalink / raw)
To: gdb-patches
Hi.
The following patch adds support for the $_siginfo convenience variable
to sparc64-*-linux-gnu targets.
It also makes the tests gdb.base/siginfo-thread.exp and
gdb.base/siginfo-obj.exp to run (and pass) on these targets.
Tested on sparc64-unknown-linux-gnu. No visible regressions after
running the testsuite.
2013-10-22 Jose E. Marchesi <jose.marchesi@oracle.com>
* sparc64-linux-tdep.c (sparc64_linux_get_siginfo_type): New function.
(sparc64_linux_init_abi): Hook sparc_linux_get_siginfo_type to provide
gdbarch_get_siginfo_type.
2013-10-22 Jose E. Marchesi <jose.marchesi@oracle.com>
* gdb.base/siginfo-obj.exp: Extended signal info is now supported
in sparc64, so run the test in these targets.
* gdb.base/siginfo-thread.exp: Likewise.
diff --git a/gdb/sparc64-linux-tdep.c b/gdb/sparc64-linux-tdep.c
index 3f53f6c..1c4f647 100644
--- a/gdb/sparc64-linux-tdep.c
+++ b/gdb/sparc64-linux-tdep.c
@@ -232,6 +232,121 @@ sparc64_linux_get_syscall_number (struct gdbarch *gdbarch,
return ret;
}
+/* Implementation of gdbarch_get_siginfo_type as documented in
+ gdbarch.h */
+
+static struct type *
+sparc64_linux_get_siginfo_type (struct gdbarch *gdbarch)
+{
+ struct type *int_type, *uint_type, *long_type, *void_ptr_type;
+ struct type *uid_type, *pid_type;
+ struct type *sigval_type, *clock_type;
+ struct type *siginfo_type, *sifields_type;
+ struct type *type;
+
+ int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
+ 0, "int");
+ uint_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
+ 1, "unsigned int");
+ long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
+ 0, "long");
+ void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
+
+ /* sival_t */
+ sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
+ TYPE_NAME (sigval_type) = xstrdup ("sigval_t");
+ append_composite_type_field (sigval_type, "sival_int", int_type);
+ append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type);
+
+ /* __pid_t */
+ pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
+ TYPE_LENGTH (int_type), "__pid_t");
+ TYPE_TARGET_TYPE (pid_type) = int_type;
+ TYPE_TARGET_STUB (pid_type) = 1;
+
+ /* __uid_t */
+ uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
+ TYPE_LENGTH (uint_type), "__uid_t");
+ TYPE_TARGET_TYPE (uid_type) = uint_type;
+ TYPE_TARGET_STUB (uid_type) = 1;
+
+ /* __clock_t */
+ clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
+ TYPE_LENGTH (long_type), "__clock_t");
+ TYPE_TARGET_TYPE (clock_type) = long_type;
+ TYPE_TARGET_STUB (clock_type) = 1;
+
+ /* _sifields */
+ sifields_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
+
+ {
+ const int si_max_size = 128;
+ int si_pad_size;
+ int size_of_int = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT;
+
+ /* _pad */
+ if (gdbarch_ptr_bit (gdbarch) == 64)
+ si_pad_size = (si_max_size / size_of_int) - 4;
+ else
+ si_pad_size = (si_max_size / size_of_int) - 3;
+ append_composite_type_field (sifields_type, "_pad",
+ init_vector_type (int_type, si_pad_size));
+ }
+
+ /* _kill */
+ type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+ append_composite_type_field (type, "si_pid", pid_type);
+ append_composite_type_field (type, "si_uid", uid_type);
+ append_composite_type_field (sifields_type, "_kill", type);
+
+ /* _timer */
+ type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+ append_composite_type_field (type, "si_tid", int_type);
+ append_composite_type_field (type, "si_overrun", int_type);
+ append_composite_type_field (type, "si_sigval", sigval_type);
+ append_composite_type_field (sifields_type, "_timer", type);
+
+ /* _rt */
+ type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+ append_composite_type_field (type, "si_pid", pid_type);
+ append_composite_type_field (type, "si_uid", uid_type);
+ append_composite_type_field (type, "si_sigval", sigval_type);
+ append_composite_type_field (sifields_type, "_rt", type);
+
+ /* _sigchld */
+ type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+ append_composite_type_field (type, "si_pid", pid_type);
+ append_composite_type_field (type, "si_uid", uid_type);
+ append_composite_type_field (type, "si_status", int_type);
+ append_composite_type_field (type, "si_utime", clock_type);
+ append_composite_type_field (type, "si_stime", clock_type);
+ append_composite_type_field (sifields_type, "_sigchld", type);
+
+ /* _sigfault */
+ type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+ append_composite_type_field (type, "si_addr", void_ptr_type);
+ append_composite_type_field (type, "si_trapno", int_type);
+ append_composite_type_field (sifields_type, "_sigfault", type);
+
+ /* _sigpoll */
+ type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+ append_composite_type_field (type, "si_band", int_type);
+ append_composite_type_field (type, "si_fd", int_type);
+ append_composite_type_field (sifields_type, "_sigpoll", type);
+
+ /* struct siginfo */
+ siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+ TYPE_NAME (siginfo_type) = xstrdup ("siginfo");
+ append_composite_type_field (siginfo_type, "si_signo", int_type);
+ append_composite_type_field (siginfo_type, "si_errno", int_type);
+ append_composite_type_field (siginfo_type, "si_code", int_type);
+ append_composite_type_field_aligned (siginfo_type,
+ "_sifields", sifields_type,
+ TYPE_LENGTH (long_type));
+
+ return siginfo_type;
+}
+
\f
static void
@@ -278,6 +393,9 @@ sparc64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
set_xml_syscall_file_name (XML_SYSCALL_FILENAME_SPARC64);
set_gdbarch_get_syscall_number (gdbarch,
sparc64_linux_get_syscall_number);
+
+ set_gdbarch_get_siginfo_type (gdbarch,
+ sparc64_linux_get_siginfo_type);
}
\f
diff --git a/gdb/testsuite/gdb.base/siginfo-obj.exp b/gdb/testsuite/gdb.base/siginfo-obj.exp
index 6cee02e..5046892 100644
--- a/gdb/testsuite/gdb.base/siginfo-obj.exp
+++ b/gdb/testsuite/gdb.base/siginfo-obj.exp
@@ -28,7 +28,8 @@ if [target_info exists gdb,nosignals] {
if { ! [istarget "i?86-*-linux*"]
&& ! [istarget "x86_64-*-linux*"]
- && ! [istarget "arm*-*-linux*"] } {
+ && ! [istarget "arm*-*-linux*"]
+ && ! [istarget "sparc64-*-linux*"] } {
verbose "Skipping siginfo-obj.exp because of lack of support."
return
}
diff --git a/gdb/testsuite/gdb.base/siginfo-thread.exp b/gdb/testsuite/gdb.base/siginfo-thread.exp
index a351802..541594b 100644
--- a/gdb/testsuite/gdb.base/siginfo-thread.exp
+++ b/gdb/testsuite/gdb.base/siginfo-thread.exp
@@ -23,7 +23,8 @@ if [target_info exists gdb,nosignals] {
if { ! [istarget "i?86-*-linux*"]
&& ! [istarget "x86_64-*-linux*"]
- && ! [istarget "arm*-*-linux*"] } {
+ && ! [istarget "arm*-*-linux*"]
+ && ! [istarget "sparc64-*-linux*"] } {
verbose "Skipping siginfo-thread.exp because of lack of support."
return
}
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] Support for the $_siginfo convenience var in sparc64
2013-10-22 13:09 [PATCH] Support for the $_siginfo convenience var in sparc64 Jose E. Marchesi
@ 2013-10-22 13:21 ` Pedro Alves
2013-10-22 13:36 ` Jose E. Marchesi
0 siblings, 1 reply; 5+ messages in thread
From: Pedro Alves @ 2013-10-22 13:21 UTC (permalink / raw)
To: Jose E. Marchesi; +Cc: gdb-patches
On 10/22/2013 02:11 PM, Jose E. Marchesi wrote:
>
> Hi.
>
> The following patch adds support for the $_siginfo convenience variable
> to sparc64-*-linux-gnu targets.
I take it from the patch that linux-tdep.c:linux_get_siginfo_type wouldn't
work for sparc64? Why is that? What's different?
> It also makes the tests gdb.base/siginfo-thread.exp and
> gdb.base/siginfo-obj.exp to run (and pass) on these targets.
>
> Tested on sparc64-unknown-linux-gnu. No visible regressions after
> running the testsuite.
>
> 2013-10-22 Jose E. Marchesi <jose.marchesi@oracle.com>
>
> * sparc64-linux-tdep.c (sparc64_linux_get_siginfo_type): New function.
> (sparc64_linux_init_abi): Hook sparc_linux_get_siginfo_type to provide
> gdbarch_get_siginfo_type.
>
> 2013-10-22 Jose E. Marchesi <jose.marchesi@oracle.com>
>
> * gdb.base/siginfo-obj.exp: Extended signal info is now supported
> in sparc64, so run the test in these targets.
> * gdb.base/siginfo-thread.exp: Likewise.
>
> diff --git a/gdb/sparc64-linux-tdep.c b/gdb/sparc64-linux-tdep.c
> index 3f53f6c..1c4f647 100644
> --- a/gdb/sparc64-linux-tdep.c
> +++ b/gdb/sparc64-linux-tdep.c
> @@ -232,6 +232,121 @@ sparc64_linux_get_syscall_number (struct gdbarch *gdbarch,
> return ret;
> }
>
> +/* Implementation of gdbarch_get_siginfo_type as documented in
> + gdbarch.h */
> +
> +static struct type *
> +sparc64_linux_get_siginfo_type (struct gdbarch *gdbarch)
> +{
> + struct type *int_type, *uint_type, *long_type, *void_ptr_type;
> + struct type *uid_type, *pid_type;
> + struct type *sigval_type, *clock_type;
> + struct type *siginfo_type, *sifields_type;
> + struct type *type;
> +
> + int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
> + 0, "int");
> + uint_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
> + 1, "unsigned int");
> + long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
> + 0, "long");
> + void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
> +
> + /* sival_t */
> + sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
> + TYPE_NAME (sigval_type) = xstrdup ("sigval_t");
> + append_composite_type_field (sigval_type, "sival_int", int_type);
> + append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type);
> +
> + /* __pid_t */
> + pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
> + TYPE_LENGTH (int_type), "__pid_t");
> + TYPE_TARGET_TYPE (pid_type) = int_type;
> + TYPE_TARGET_STUB (pid_type) = 1;
> +
> + /* __uid_t */
> + uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
> + TYPE_LENGTH (uint_type), "__uid_t");
> + TYPE_TARGET_TYPE (uid_type) = uint_type;
> + TYPE_TARGET_STUB (uid_type) = 1;
> +
> + /* __clock_t */
> + clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
> + TYPE_LENGTH (long_type), "__clock_t");
> + TYPE_TARGET_TYPE (clock_type) = long_type;
> + TYPE_TARGET_STUB (clock_type) = 1;
> +
> + /* _sifields */
> + sifields_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
> +
> + {
> + const int si_max_size = 128;
> + int si_pad_size;
> + int size_of_int = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT;
> +
> + /* _pad */
> + if (gdbarch_ptr_bit (gdbarch) == 64)
> + si_pad_size = (si_max_size / size_of_int) - 4;
> + else
> + si_pad_size = (si_max_size / size_of_int) - 3;
> + append_composite_type_field (sifields_type, "_pad",
> + init_vector_type (int_type, si_pad_size));
> + }
> +
> + /* _kill */
> + type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
> + append_composite_type_field (type, "si_pid", pid_type);
> + append_composite_type_field (type, "si_uid", uid_type);
> + append_composite_type_field (sifields_type, "_kill", type);
> +
> + /* _timer */
> + type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
> + append_composite_type_field (type, "si_tid", int_type);
> + append_composite_type_field (type, "si_overrun", int_type);
> + append_composite_type_field (type, "si_sigval", sigval_type);
> + append_composite_type_field (sifields_type, "_timer", type);
> +
> + /* _rt */
> + type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
> + append_composite_type_field (type, "si_pid", pid_type);
> + append_composite_type_field (type, "si_uid", uid_type);
> + append_composite_type_field (type, "si_sigval", sigval_type);
> + append_composite_type_field (sifields_type, "_rt", type);
> +
> + /* _sigchld */
> + type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
> + append_composite_type_field (type, "si_pid", pid_type);
> + append_composite_type_field (type, "si_uid", uid_type);
> + append_composite_type_field (type, "si_status", int_type);
> + append_composite_type_field (type, "si_utime", clock_type);
> + append_composite_type_field (type, "si_stime", clock_type);
> + append_composite_type_field (sifields_type, "_sigchld", type);
> +
> + /* _sigfault */
> + type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
> + append_composite_type_field (type, "si_addr", void_ptr_type);
> + append_composite_type_field (type, "si_trapno", int_type);
> + append_composite_type_field (sifields_type, "_sigfault", type);
> +
> + /* _sigpoll */
> + type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
> + append_composite_type_field (type, "si_band", int_type);
> + append_composite_type_field (type, "si_fd", int_type);
> + append_composite_type_field (sifields_type, "_sigpoll", type);
> +
> + /* struct siginfo */
> + siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
> + TYPE_NAME (siginfo_type) = xstrdup ("siginfo");
> + append_composite_type_field (siginfo_type, "si_signo", int_type);
> + append_composite_type_field (siginfo_type, "si_errno", int_type);
> + append_composite_type_field (siginfo_type, "si_code", int_type);
> + append_composite_type_field_aligned (siginfo_type,
> + "_sifields", sifields_type,
> + TYPE_LENGTH (long_type));
> +
> + return siginfo_type;
> +}
> +
> \f
>
> static void
> @@ -278,6 +393,9 @@ sparc64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
> set_xml_syscall_file_name (XML_SYSCALL_FILENAME_SPARC64);
> set_gdbarch_get_syscall_number (gdbarch,
> sparc64_linux_get_syscall_number);
> +
> + set_gdbarch_get_siginfo_type (gdbarch,
> + sparc64_linux_get_siginfo_type);
> }
> \f
>
> diff --git a/gdb/testsuite/gdb.base/siginfo-obj.exp b/gdb/testsuite/gdb.base/siginfo-obj.exp
> index 6cee02e..5046892 100644
> --- a/gdb/testsuite/gdb.base/siginfo-obj.exp
> +++ b/gdb/testsuite/gdb.base/siginfo-obj.exp
> @@ -28,7 +28,8 @@ if [target_info exists gdb,nosignals] {
>
> if { ! [istarget "i?86-*-linux*"]
> && ! [istarget "x86_64-*-linux*"]
> - && ! [istarget "arm*-*-linux*"] } {
> + && ! [istarget "arm*-*-linux*"]
> + && ! [istarget "sparc64-*-linux*"] } {
> verbose "Skipping siginfo-obj.exp because of lack of support."
> return
> }
> diff --git a/gdb/testsuite/gdb.base/siginfo-thread.exp b/gdb/testsuite/gdb.base/siginfo-thread.exp
> index a351802..541594b 100644
> --- a/gdb/testsuite/gdb.base/siginfo-thread.exp
> +++ b/gdb/testsuite/gdb.base/siginfo-thread.exp
> @@ -23,7 +23,8 @@ if [target_info exists gdb,nosignals] {
>
> if { ! [istarget "i?86-*-linux*"]
> && ! [istarget "x86_64-*-linux*"]
> - && ! [istarget "arm*-*-linux*"] } {
> + && ! [istarget "arm*-*-linux*"]
> + && ! [istarget "sparc64-*-linux*"] } {
> verbose "Skipping siginfo-thread.exp because of lack of support."
> return
> }
>
--
Pedro Alves
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] Support for the $_siginfo convenience var in sparc64
2013-10-22 13:21 ` Pedro Alves
@ 2013-10-22 13:36 ` Jose E. Marchesi
2013-12-03 11:59 ` Jose E. Marchesi
0 siblings, 1 reply; 5+ messages in thread
From: Jose E. Marchesi @ 2013-10-22 13:36 UTC (permalink / raw)
To: Pedro Alves; +Cc: gdb-patches
> The following patch adds support for the $_siginfo convenience variable
> to sparc64-*-linux-gnu targets.
I take it from the patch that linux-tdep.c:linux_get_siginfo_type wouldn't
work for sparc64? Why is that? What's different?
These are the differences of glibc's bits/siginfo.h in sparc with
respect to bits/siginfo.h in x86:
- The _sigfault struct has an additional field `int si_trapno'.
- The `si_band' field in the `_sigpoll' struct is of type `int' instead
of `long int'.
It would be nice to avoid all that code repetition, but since glibc
maintains per-target bits/signinfo.h files more differences could be
introduced in the future...
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] Support for the $_siginfo convenience var in sparc64
2013-10-22 13:36 ` Jose E. Marchesi
@ 2013-12-03 11:59 ` Jose E. Marchesi
2013-12-03 17:06 ` Pedro Alves
0 siblings, 1 reply; 5+ messages in thread
From: Jose E. Marchesi @ 2013-12-03 11:59 UTC (permalink / raw)
To: Pedro Alves; +Cc: gdb-patches
ping
> The following patch adds support for the $_siginfo convenience variable
> to sparc64-*-linux-gnu targets.
I take it from the patch that linux-tdep.c:linux_get_siginfo_type wouldn't
work for sparc64? Why is that? What's different?
These are the differences of glibc's bits/siginfo.h in sparc with
respect to bits/siginfo.h in x86:
- The _sigfault struct has an additional field `int si_trapno'.
- The `si_band' field in the `_sigpoll' struct is of type `int' instead
of `long int'.
It would be nice to avoid all that code repetition, but since glibc
maintains per-target bits/signinfo.h files more differences could be
introduced in the future...
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] Support for the $_siginfo convenience var in sparc64
2013-12-03 11:59 ` Jose E. Marchesi
@ 2013-12-03 17:06 ` Pedro Alves
0 siblings, 0 replies; 5+ messages in thread
From: Pedro Alves @ 2013-12-03 17:06 UTC (permalink / raw)
To: Jose E. Marchesi; +Cc: gdb-patches
On 12/03/2013 11:59 AM, Jose E. Marchesi wrote:
>
> ping
>
> > The following patch adds support for the $_siginfo convenience variable
> > to sparc64-*-linux-gnu targets.
>
> I take it from the patch that linux-tdep.c:linux_get_siginfo_type wouldn't
> work for sparc64? Why is that? What's different?
>
> These are the differences of glibc's bits/siginfo.h in sparc with
> respect to bits/siginfo.h in x86:
>
> - The _sigfault struct has an additional field `int si_trapno'.
> - The `si_band' field in the `_sigpoll' struct is of type `int' instead
> of `long int'.
>
> It would be nice to avoid all that code repetition, but since glibc
> maintains per-target bits/signinfo.h files more differences could be
> introduced in the future...
It just looks like the glibc code is waiting to be cleaned up:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
$ diff -up ./sysdeps/unix/sysv/linux/bits/siginfo.h ./sysdeps/unix/sysv/linux/sparc/bits/siginfo.h
-/* siginfo_t, sigevent and constants. Linux version.
+/* siginfo_t, sigevent and constants. Linux/SPARC version.
Copyright (C) 1997-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
@@ -95,13 +95,14 @@ typedef struct
struct
{
void *si_addr; /* Faulting insn/memory ref. */
+ int si_trapno;
short int si_addr_lsb; /* Valid LSB of the reported address. */
} _sigfault;
/* SIGPOLL. */
struct
{
- long int si_band; /* Band event for SIGPOLL. */
+ int si_band; /* Band event for SIGPOLL. */
int si_fd;
} _sigpoll;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
On the kernel side, archs just define a couple macros for those minor
differences, sharing most of the definitions:
http://lxr.free-electrons.com/source/include/uapi/asm-generic/siginfo.h
28
29 /*
30 * The default "si_band" type is "long", as specified by POSIX.
31 * However, some architectures want to override this to "int"
32 * for historical compatibility reasons, so we allow that.
33 */
34 #ifndef __ARCH_SI_BAND_T
35 #define __ARCH_SI_BAND_T long
36 #endif
...
87 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
88 struct {
89 void __user *_addr; /* faulting insn/memory ref. */
90 #ifdef __ARCH_SI_TRAPNO
91 int _trapno; /* TRAP # which caused the signal */
92 #endif
Seems like we should be able to share similarly (though with runtime
switches, of course).
--
Pedro Alves
^ permalink raw reply [flat|nested] 5+ messages in thread
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2013-10-22 13:09 [PATCH] Support for the $_siginfo convenience var in sparc64 Jose E. Marchesi
2013-10-22 13:21 ` Pedro Alves
2013-10-22 13:36 ` Jose E. Marchesi
2013-12-03 11:59 ` Jose E. Marchesi
2013-12-03 17:06 ` Pedro Alves
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