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Fix babeltrace errors (Yao Qi). 

- Fix crash on Python frame filters with unreadable arg (BZ 1126177).
This commit is contained in:
Jan Kratochvil 2014-08-20 21:03:44 +02:00
parent d3f8b94c47
commit 263b58000d
3 changed files with 845 additions and 1 deletions
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237
gdb-babeltrace-minsize.patch Normal file
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@ -0,0 +1,237 @@
http://sourceware.org/ml/gdb-patches/2014-08/msg00376.html
Subject: Re: --with-babeltrace generates many FAILs
On 08/19/2014 10:07 PM, Jan Kratochvil wrote:
> * '#if HAVE_LIBBABELTRACE1_1_0' could have a comment that >=1.1.1 rejects the
> faked packet (what you described in the mail but not in the patch).
Fixed. To be precise, >= 1.1.2 rejects the faked packet, 1.1.1
doesn't. See the table I posted.
> * It is always better to check for feature/defect than to check for version.
> For example because various distros backport various fixes (unfortunately
> including their possible regressions/defects) and so version checks may be
> misleading then. At least in this case it seems to me as possible to check
> how libbacktrace behaves from configure; although maybe it is not easy
> enough, not sure.
In order to check libbabeltrace's behaviour in configure, we have to write
a c program to generate CTF data and read the trace data via
babeltrace or any program (using libbabeltrace) written by ourselves.
It is not easy to do so.
The patch is updated. OK to apply?
--
Yao (齐尧)
Subject: [PATCH] Check babeltrace 1.1.0
Subject: [PATCH] Check babeltrace 1.1.0
When GDB uses recent version of babeltrace, such as 1.2.x, we'll see
such error emitted from babeltrace library,
(gdb) target ctf .../gdb/testsuite/gdb.trace/actions.ctf
[error] Invalid CTF stream: content size is smaller than
packet headers.
[error] Stream index creation error.
[error] Open file stream error.
The problem can be reproduce out of GDB too, using babeltrace,
$ babeltrace ./fake-packet.ctf/
[error] Invalid CTF stream: content size is smaller than packet headers.
[error] Stream index creation error.
[error] Open file stream error.
Recent babeltrace library becomes more strict on CTF, and complains
about one "faked packet" GDB adds, when saving trace data in ctf
format from GDB. babeltrace 1.1.0 has a bug that it can't read trace
data smaller than a certain size (see https://bugs.lttng.org/issues/450).
We workaround it in GDB to append some meaningless data in a faked
packet to make sure trace file is large enough (see ctf.c:ctf_end).
The babeltrace issue was fixed in 1.1.1 release. However, babeltrace
recent release (since 1.1.2) starts to complain about such faked
packet. Here is a table shows that whether faked packet or no faked
packet is supported by various babeltrace releases,
faked packet no faked packet
1.1.0 Yes No
1.1.1 Yes Yes
1.1.2 No Yes
1.2.0 No Yes
We decide to include the code to workaround 1.1.0 issue only if 1.1.0
is used. We choose pkg-config to check babeltrace's version in
configure.
gdb:
2014-08-20 Yao Qi <yao@codesourcery.com>
* configure.ac: Disable babeltrace support if pkg-config is
missing. Use pkg-config to check whether libbabeltrace is
1.1.0.
* config.in: Regenerate.
* configure: Regenerate.
* ctf.c (CTF_FILE_MIN_SIZE): Remove.
(ctf_end): Wrap the code with
#if HAVE_LIBBABELTRACE1_1_0 #endif.
[HAVE_LIBBABELTRACE1_1_0] (CTF_FILE_MIN_SIZE): New macro.
---
gdb/config.in | 3 +++
gdb/configure | 25 +++++++++++++++++++++++++
gdb/configure.ac | 22 ++++++++++++++++++++++
gdb/ctf.c | 25 ++++++++++++++++---------
4 files changed, 66 insertions(+), 9 deletions(-)
diff --git a/gdb/config.in b/gdb/config.in
index b853412..54152cd 100644
--- a/gdb/config.in
+++ b/gdb/config.in
@@ -183,6 +183,9 @@
/* Define if you have the babeltrace library. */
#undef HAVE_LIBBABELTRACE
+/* Define to 1 if you have libbabeltrace 1.1.0 */
+#undef HAVE_LIBBABELTRACE1_1_0
+
/* Define to 1 if you have the `dl' library (-ldl). */
#undef HAVE_LIBDL
diff --git a/gdb/configure b/gdb/configure
index 9253e28..d4e2c6e 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -14817,6 +14817,11 @@ $as_echo "$with_babeltrace" >&6; }
if test "x$with_babeltrace" = "xno"; then
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: babletrace support disabled; GDB is unable to read CTF data." >&5
$as_echo "$as_me: WARNING: babletrace support disabled; GDB is unable to read CTF data." >&2;}
+elif test "${pkg_config_prog_path}" = "missing"; then
+ # pkg-config is used to check the version of libbabeltrace. If pkg-config
+ # is missing, we have to disable babeltrace support.
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: pkg-config not found, babletrace support disabled" >&5
+$as_echo "$as_me: WARNING: pkg-config not found, babletrace support disabled" >&2;}
else
# Append -Werror to CFLAGS so that configure can catch the warning
# "assignment from incompatible pointer type", which is related to
@@ -15307,6 +15312,26 @@ $as_echo "$LIBBABELTRACE" >&6; }
{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: babeltrace is missing or unusable; GDB is unable to read CTF data." >&5
$as_echo "$as_me: WARNING: babeltrace is missing or unusable; GDB is unable to read CTF data." >&2;}
fi
+ else
+ # Need to know whether libbabeltrace is 1.1.0.
+ pkg_config_path=
+ for x in $LTLIBBABELTRACE; do
+ case "$x" in
+ -L*)
+ dir=`echo "X$x" | sed -e 's/^X-L//'`
+ if test -d "$dir/pkgconfig"; then
+ pkg_config_path="${pkg_config_path}${pkg_config_path:+:}$dir/pkgconfig"
+ fi
+ ;;
+ esac
+ done
+
+ `PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$pkg_config_path ${pkg_config_prog_path} babeltrace = 1.1.0`
+ if test "$?" -eq 0 ; then
+
+$as_echo "#define HAVE_LIBBABELTRACE1_1_0 1" >>confdefs.h
+
+ fi
fi
fi
diff --git a/gdb/configure.ac b/gdb/configure.ac
index 61919b4..1d8d400 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -2420,6 +2420,10 @@ AC_MSG_RESULT([$with_babeltrace])
if test "x$with_babeltrace" = "xno"; then
AC_MSG_WARN([babletrace support disabled; GDB is unable to read CTF data.])
+elif test "${pkg_config_prog_path}" = "missing"; then
+ # pkg-config is used to check the version of libbabeltrace. If pkg-config
+ # is missing, we have to disable babeltrace support.
+ AC_MSG_WARN([pkg-config not found, babletrace support disabled])
else
# Append -Werror to CFLAGS so that configure can catch the warning
# "assignment from incompatible pointer type", which is related to
@@ -2450,6 +2454,24 @@ else
else
AC_MSG_WARN([babeltrace is missing or unusable; GDB is unable to read CTF data.])
fi
+ else
+ # Need to know whether libbabeltrace is 1.1.0.
+ pkg_config_path=
+ for x in $LTLIBBABELTRACE; do
+ case "$x" in
+ -L*)
+ dir=`echo "X$x" | sed -e 's/^X-L//'`
+ if test -d "$dir/pkgconfig"; then
+ pkg_config_path="${pkg_config_path}${pkg_config_path:+:}$dir/pkgconfig"
+ fi
+ ;;
+ esac
+ done
+
+ `PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$pkg_config_path ${pkg_config_prog_path} babeltrace = 1.1.0`
+ if test "$?" -eq 0 ; then
+ AC_DEFINE([HAVE_LIBBABELTRACE1_1_0], [1], [Define to 1 if you have libbabeltrace 1.1.0])
+ fi
fi
fi
diff --git a/gdb/ctf.c b/gdb/ctf.c
index df645c0..684da50 100644
--- a/gdb/ctf.c
+++ b/gdb/ctf.c
@@ -623,11 +623,6 @@ ctf_write_definition_end (struct trace_file_writer *self)
self->ops->frame_ops->end (self);
}
-/* The minimal file size of data stream. It is required by
- babeltrace. */
-
-#define CTF_FILE_MIN_SIZE 4096
-
/* This is the implementation of trace_file_write_ops method
end. */
@@ -637,10 +632,21 @@ ctf_end (struct trace_file_writer *self)
struct ctf_trace_file_writer *writer = (struct ctf_trace_file_writer *) self;
gdb_assert (writer->tcs.content_size == 0);
- /* The babeltrace requires or assumes that the size of datastream
- file is greater than 4096 bytes. If we don't generate enough
- packets and events, create a fake packet which has zero event,
- to use up the space. */
+
+#if HAVE_LIBBABELTRACE1_1_0
+ /* The babeltrace-1.1.0 requires or assumes that the size of datastream
+ file is greater than 4096 bytes. This was fixed after 1.1.0 release.
+ See https://bugs.lttng.org/issues/450
+ If we don't generate enough packets and events, create a fake packet
+ which has zero event, to use up the space. However, babeltrace
+ release (since 1.1.2) starts to complain about such faked packet,
+ we include this workaround only for babeltrace 1.1.0. */
+
+ /* The minimal file size of data stream. It is required by
+ babeltrace. */
+
+#define CTF_FILE_MIN_SIZE 4096
+
if (writer->tcs.packet_start < CTF_FILE_MIN_SIZE)
{
uint32_t u32;
@@ -681,6 +687,7 @@ ctf_end (struct trace_file_writer *self)
ctf_save_write (&writer->tcs, &b, 1);
}
}
+#endif /* HAVE_LIBBABELTRACE1_1_0 */
}
/* This is the implementation of trace_frame_write_ops method
--
1.9.3

13
gdb.spec
View File

@ -26,7 +26,7 @@ Version: 7.8
# The release always contains a leading reserved number, start it at 1.
# `upstream' is not a part of `name' to stay fully rpm dependencies compatible for the testing.
Release: 19%{?dist}
Release: 20%{?dist}
License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ and GPLv2+ with exceptions and GPL+ and LGPLv2+ and BSD and Public Domain and GFDL
Group: Development/Debuggers
@ -525,11 +525,16 @@ Patch921: gdb-python-completer-2of2.patch
Patch925: gdb-fortran-frame-string.patch
# Fix -Werror=unused-variable error configuring babeltrace.
# Fix babeltrace errors (Yao Qi).
Patch926: gdb-babeltrace-configure.patch
Patch928: gdb-babeltrace-minsize.patch
# Fix Python GIL with gdb.execute("continue") (Phil Muldoon, BZ 1116957).
Patch927: gdb-python-gil.patch
# Fix crash on Python frame filters with unreadable arg (BZ 1126177).
Patch929: python-framefilter-invalidarg.patch
%if 0%{!?rhel:1} || 0%{?rhel} > 6
# RL_STATE_FEDORA_GDB would not be found for:
# Patch642: gdb-readline62-ask-more-rh.patch
@ -814,7 +819,9 @@ find -name "*.info*"|xargs rm -f
%patch921 -p1
%patch925 -p1
%patch926 -p1
%patch928 -p1
%patch927 -p1
%patch929 -p1
%patch848 -p1
%if 0%{!?el6:1}
@ -1310,6 +1317,10 @@ then
fi
%changelog
* Wed Aug 20 2014 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.8-20.fc21
- Fix babeltrace errors (Yao Qi).
- Fix crash on Python frame filters with unreadable arg (BZ 1126177).
* Sat Aug 16 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 7.8-19
- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_22_Mass_Rebuild

596
python-framefilter-invalidarg.patch Normal file
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@ -0,0 +1,596 @@
http://sourceware.org/ml/gdb-patches/2014-08/msg00364.html
Subject: [patch+7.8?] Fix crash on Python frame filters with unreadable arg
--d6Gm4EdcadzBjdND
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Hi,
https://bugzilla.redhat.com/show_bug.cgi?id=1126177
ERROR: AddressSanitizer: SEGV on unknown address 0x000000000050 (pc 0x000000992bef sp 0x7ffff9039530 bp 0x7ffff9039540 T0)
#0 0x992bee in value_type .../gdb/value.c:925
#1 0x87c951 in py_print_single_arg python/py-framefilter.c:445
#2 0x87cfae in enumerate_args python/py-framefilter.c:596
#3 0x87e0b0 in py_print_args python/py-framefilter.c:968
It crashes because frame_arg::val is documented it may contain NULL
(frame_arg::error is then non-NULL) but the code does not handle it.
Another bug is that py_print_single_arg() calls goto out of its TRY_CATCH
which messes up GDB cleanup chain crashing GDB later.
I tried to somehow separate it to two patches first but it in the end kept
them merged.
No regressions on {x86_64,x86_64-m32,i686}-fedorarawhide-linux-gnu.
It is probably 7.7 regression (I have not verified it) due to the introduction
of Python frame filters.
I am not sure if it is more suitable for gdb.arch/ or gdb.python/ , used the
latter.
Thanks,
Jan
--d6Gm4EdcadzBjdND
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline; filename="pyinvalidarg.patch"
gdb/
2014-08-19 Jan Kratochvil <jan.kratochvil@redhat.com>
* python/py-framefilter.c (py_print_single_arg): Handle NULL FA->VAL.
Fix goto out of TRY_CATCH.
gdb/testsuite/
2014-08-19 Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.python/amd64-py-framefilter-invalidarg.S: New file.
* gdb.python/py-framefilter-invalidarg-gdb.py.in: New file.
* gdb.python/py-framefilter-invalidarg.exp: New file.
* gdb.python/py-framefilter-invalidarg.py: New file.
diff --git a/gdb/python/py-framefilter.c b/gdb/python/py-framefilter.c
index 9db83c7..d53282f 100644
--- a/gdb/python/py-framefilter.c
+++ b/gdb/python/py-framefilter.c
@@ -365,9 +365,12 @@ py_print_single_arg (struct ui_out *out,
{
struct value *val;
volatile struct gdb_exception except;
+ enum ext_lang_bt_status retval = EXT_LANG_BT_OK;
if (fa != NULL)
{
+ if (fa->val == NULL && fa->error == NULL)
+ return EXT_LANG_BT_OK;
language = language_def (SYMBOL_LANGUAGE (fa->sym));
val = fa->val;
}
@@ -433,16 +436,18 @@ py_print_single_arg (struct ui_out *out,
/* For MI print the type, but only for simple values. This seems
weird, but this is how MI choose to format the various output
types. */
- if (args_type == MI_PRINT_SIMPLE_VALUES)
+ if (args_type == MI_PRINT_SIMPLE_VALUES && val != NULL)
{
if (py_print_type (out, val) == EXT_LANG_BT_ERROR)
{
+ retval = EXT_LANG_BT_ERROR;
do_cleanups (cleanups);
- goto error;
+ continue;
}
}
- annotate_arg_value (value_type (val));
+ if (val != NULL)
+ annotate_arg_value (value_type (val));
/* If the output is to the CLI, and the user option "set print
frame-arguments" is set to none, just output "...". */
@@ -454,27 +459,25 @@ py_print_single_arg (struct ui_out *out,
for the case of MI_PRINT_NO_VALUES. */
if (args_type != NO_VALUES)
{
- if (py_print_value (out, val, opts, 0, args_type, language)
- == EXT_LANG_BT_ERROR)
+ if (val == NULL)
{
- do_cleanups (cleanups);
- goto error;
+ gdb_assert (fa != NULL && fa->error != NULL);
+ ui_out_field_fmt (out, "value",
+ _("<error reading variable: %s>"),
+ fa->error);
}
+ else if (py_print_value (out, val, opts, 0, args_type, language)
+ == EXT_LANG_BT_ERROR)
+ retval = EXT_LANG_BT_ERROR;
}
}
do_cleanups (cleanups);
}
if (except.reason < 0)
- {
- gdbpy_convert_exception (except);
- goto error;
- }
-
- return EXT_LANG_BT_OK;
+ gdbpy_convert_exception (except);
- error:
- return EXT_LANG_BT_ERROR;
+ return retval;
}
/* Helper function to loop over frame arguments provided by the
diff --git a/gdb/testsuite/gdb.python/amd64-py-framefilter-invalidarg.S b/gdb/testsuite/gdb.python/amd64-py-framefilter-invalidarg.S
new file mode 100755
index 0000000..3ac1b23
--- /dev/null
+++ b/gdb/testsuite/gdb.python/amd64-py-framefilter-invalidarg.S
@@ -0,0 +1,261 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2014 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* This file is compiled from a single line
+ int main (int argc, char **argv) { return 0; }
+ using -g -dA -S -O2 and patched as #if-ed below. */
+
+ .file "py-framefilter-invalidarg.c"
+ .text
+.Ltext0:
+ .globl main
+ .type main, @function
+main:
+.LFB0:
+ .file 1 "py-framefilter-invalidarg.c"
+ # py-framefilter-invalidarg.c:1
+ .loc 1 1 0
+ .cfi_startproc
+# BLOCK 2 seq:0
+# PRED: ENTRY (FALLTHRU)
+ pushq %rbp
+ .cfi_def_cfa_offset 16
+ .cfi_offset 6, -16
+ movq %rsp, %rbp
+ .cfi_def_cfa_register 6
+ movl %edi, -4(%rbp)
+ movq %rsi, -16(%rbp)
+ # py-framefilter-invalidarg.c:2
+ .loc 1 2 0
+ movl $0, %eax
+ # py-framefilter-invalidarg.c:3
+ .loc 1 3 0
+ popq %rbp
+ .cfi_def_cfa 7, 8
+# SUCC: EXIT [100.0%]
+ ret
+ .cfi_endproc
+.LFE0:
+ .size main, .-main
+.Letext0:
+ .section .debug_info,"",@progbits
+.Ldebug_info0:
+ .long .Le - .Ls # Length of Compilation Unit Info
+.Ls:
+ .value 0x4 # DWARF version number
+ .long .Ldebug_abbrev0 # Offset Into Abbrev. Section
+ .byte 0x8 # Pointer Size (in bytes)
+ .uleb128 0x1 # (DIE (0xb) DW_TAG_compile_unit)
+ .long .LASF3 # DW_AT_producer: "GNU C 4.9.1 20140813 (Red Hat 4.9.1-7) -mtune=generic -march=x86-64 -g"
+ .byte 0x1 # DW_AT_language
+ .long .LASF4 # DW_AT_name: "py-framefilter-invalidarg.c"
+ .long .LASF5 # DW_AT_comp_dir: ""
+ .quad .Ltext0 # DW_AT_low_pc
+ .quad .Letext0-.Ltext0 # DW_AT_high_pc
+ .long .Ldebug_line0 # DW_AT_stmt_list
+die2d:
+ .uleb128 0x2 # (DIE (0x2d) DW_TAG_subprogram)
+ # DW_AT_external
+ .long .LASF6 # DW_AT_name: "main"
+ .byte 0x1 # DW_AT_decl_file (py-framefilter-invalidarg.c)
+ .byte 0x1 # DW_AT_decl_line
+ # DW_AT_prototyped
+ .long die6b-.Ldebug_info0 # DW_AT_type
+ .quad .LFB0 # DW_AT_low_pc
+ .quad .LFE0-.LFB0 # DW_AT_high_pc
+ .uleb128 0x1 # DW_AT_frame_base
+ .byte 0x9c # DW_OP_call_frame_cfa
+ # DW_AT_GNU_all_call_sites
+die4e:
+ .uleb128 0x3 # (DIE (0x4e) DW_TAG_formal_parameter)
+ .long .LASF0 # DW_AT_name: "argc"
+ .byte 0x1 # DW_AT_decl_file (py-framefilter-invalidarg.c)
+ .byte 0x1 # DW_AT_decl_line
+ .long die6b-.Ldebug_info0 # DW_AT_type
+#if 0
+ .uleb128 0x2 # DW_AT_location
+ .byte 0x91 # DW_OP_fbreg
+ .sleb128 -20
+#endif
+#if 0
+ .uleb128 1f - 2f # DW_AT_location
+2:
+ .byte 0x03 # DW_OP_addr
+ .quad 0
+1:
+#endif
+#if 1
+ .uleb128 1f - 2f # DW_AT_location
+2:
+ .byte 0x13 # DW_OP_drop
+ .quad 0
+1:
+#endif
+die5c:
+ .uleb128 0x3 # (DIE (0x5c) DW_TAG_formal_parameter)
+ .long .LASF1 # DW_AT_name: "argv"
+ .byte 0x1 # DW_AT_decl_file (py-framefilter-invalidarg.c)
+ .byte 0x1 # DW_AT_decl_line
+ .long die72-.Ldebug_info0 # DW_AT_type
+ .uleb128 0x2 # DW_AT_location
+ .byte 0x91 # DW_OP_fbreg
+ .sleb128 -32
+ .byte 0 # end of children of DIE 0x2d
+die6b:
+ .uleb128 0x4 # (DIE (0x6b) DW_TAG_base_type)
+ .byte 0x4 # DW_AT_byte_size
+ .byte 0x5 # DW_AT_encoding
+ .ascii "int\0" # DW_AT_name
+die72:
+ .uleb128 0x5 # (DIE (0x72) DW_TAG_pointer_type)
+ .byte 0x8 # DW_AT_byte_size
+ .long die78-.Ldebug_info0 # DW_AT_type
+die78:
+ .uleb128 0x5 # (DIE (0x78) DW_TAG_pointer_type)
+ .byte 0x8 # DW_AT_byte_size
+ .long die7e-.Ldebug_info0 # DW_AT_type
+die7e:
+ .uleb128 0x6 # (DIE (0x7e) DW_TAG_base_type)
+ .byte 0x1 # DW_AT_byte_size
+ .byte 0x6 # DW_AT_encoding
+ .long .LASF2 # DW_AT_name: "char"
+ .byte 0 # end of children of DIE 0xb
+.Le:
+ .section .debug_abbrev,"",@progbits
+.Ldebug_abbrev0:
+ .uleb128 0x1 # (abbrev code)
+ .uleb128 0x11 # (TAG: DW_TAG_compile_unit)
+ .byte 0x1 # DW_children_yes
+ .uleb128 0x25 # (DW_AT_producer)
+ .uleb128 0xe # (DW_FORM_strp)
+ .uleb128 0x13 # (DW_AT_language)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3 # (DW_AT_name)
+ .uleb128 0xe # (DW_FORM_strp)
+ .uleb128 0x1b # (DW_AT_comp_dir)
+ .uleb128 0xe # (DW_FORM_strp)
+ .uleb128 0x11 # (DW_AT_low_pc)
+ .uleb128 0x1 # (DW_FORM_addr)
+ .uleb128 0x12 # (DW_AT_high_pc)
+ .uleb128 0x7 # (DW_FORM_data8)
+ .uleb128 0x10 # (DW_AT_stmt_list)
+ .uleb128 0x17 # (DW_FORM_sec_offset)
+ .byte 0
+ .byte 0
+ .uleb128 0x2 # (abbrev code)
+ .uleb128 0x2e # (TAG: DW_TAG_subprogram)
+ .byte 0x1 # DW_children_yes
+ .uleb128 0x3f # (DW_AT_external)
+ .uleb128 0x19 # (DW_FORM_flag_present)
+ .uleb128 0x3 # (DW_AT_name)
+ .uleb128 0xe # (DW_FORM_strp)
+ .uleb128 0x3a # (DW_AT_decl_file)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3b # (DW_AT_decl_line)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x27 # (DW_AT_prototyped)
+ .uleb128 0x19 # (DW_FORM_flag_present)
+ .uleb128 0x49 # (DW_AT_type)
+ .uleb128 0x13 # (DW_FORM_ref4)
+ .uleb128 0x11 # (DW_AT_low_pc)
+ .uleb128 0x1 # (DW_FORM_addr)
+ .uleb128 0x12 # (DW_AT_high_pc)
+ .uleb128 0x7 # (DW_FORM_data8)
+ .uleb128 0x40 # (DW_AT_frame_base)
+ .uleb128 0x18 # (DW_FORM_exprloc)
+ .uleb128 0x2117 # (DW_AT_GNU_all_call_sites)
+ .uleb128 0x19 # (DW_FORM_flag_present)
+ .byte 0
+ .byte 0
+ .uleb128 0x3 # (abbrev code)
+ .uleb128 0x5 # (TAG: DW_TAG_formal_parameter)
+ .byte 0 # DW_children_no
+ .uleb128 0x3 # (DW_AT_name)
+ .uleb128 0xe # (DW_FORM_strp)
+ .uleb128 0x3a # (DW_AT_decl_file)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3b # (DW_AT_decl_line)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x49 # (DW_AT_type)
+ .uleb128 0x13 # (DW_FORM_ref4)
+ .uleb128 0x2 # (DW_AT_location)
+ .uleb128 0x18 # (DW_FORM_exprloc)
+ .byte 0
+ .byte 0
+ .uleb128 0x4 # (abbrev code)
+ .uleb128 0x24 # (TAG: DW_TAG_base_type)
+ .byte 0 # DW_children_no
+ .uleb128 0xb # (DW_AT_byte_size)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3e # (DW_AT_encoding)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3 # (DW_AT_name)
+ .uleb128 0x8 # (DW_FORM_string)
+ .byte 0
+ .byte 0
+ .uleb128 0x5 # (abbrev code)
+ .uleb128 0xf # (TAG: DW_TAG_pointer_type)
+ .byte 0 # DW_children_no
+ .uleb128 0xb # (DW_AT_byte_size)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x49 # (DW_AT_type)
+ .uleb128 0x13 # (DW_FORM_ref4)
+ .byte 0
+ .byte 0
+ .uleb128 0x6 # (abbrev code)
+ .uleb128 0x24 # (TAG: DW_TAG_base_type)
+ .byte 0 # DW_children_no
+ .uleb128 0xb # (DW_AT_byte_size)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3e # (DW_AT_encoding)
+ .uleb128 0xb # (DW_FORM_data1)
+ .uleb128 0x3 # (DW_AT_name)
+ .uleb128 0xe # (DW_FORM_strp)
+ .byte 0
+ .byte 0
+ .byte 0
+ .section .debug_aranges,"",@progbits
+ .long 0x2c # Length of Address Ranges Info
+ .value 0x2 # DWARF Version
+ .long .Ldebug_info0 # Offset of Compilation Unit Info
+ .byte 0x8 # Size of Address
+ .byte 0 # Size of Segment Descriptor
+ .value 0 # Pad to 16 byte boundary
+ .value 0
+ .quad .Ltext0 # Address
+ .quad .Letext0-.Ltext0 # Length
+ .quad 0
+ .quad 0
+ .section .debug_line,"",@progbits
+.Ldebug_line0:
+ .section .debug_str,"MS",@progbits,1
+.LASF1:
+ .string "argv"
+.LASF4:
+ .string "py-framefilter-invalidarg.c"
+.LASF5:
+ .string ""
+.LASF0:
+ .string "argc"
+.LASF3:
+ .string "GNU C 4.9.1 20140813 (Red Hat 4.9.1-7) -mtune=generic -march=x86-64 -g"
+.LASF6:
+ .string "main"
+.LASF2:
+ .string "char"
+ .ident "GCC: (GNU) 4.9.1 20140813 (Red Hat 4.9.1-7)"
+ .section .note.GNU-stack,"",@progbits
diff --git a/gdb/testsuite/gdb.python/py-framefilter-invalidarg-gdb.py.in b/gdb/testsuite/gdb.python/py-framefilter-invalidarg-gdb.py.in
new file mode 100644
index 0000000..1fa6ffc
--- /dev/null
+++ b/gdb/testsuite/gdb.python/py-framefilter-invalidarg-gdb.py.in
@@ -0,0 +1,48 @@
+# Copyright (C) 2014 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# This file is part of the GDB testsuite. It tests Python-based
+# frame-filters.
+import gdb
+import itertools
+from gdb.FrameDecorator import FrameDecorator
+
+
+class FrameObjFile ():
+
+ def __init__ (self):
+ self.name = "Filter1"
+ self.priority = 1
+ self.enabled = False
+ gdb.current_progspace().frame_filters ["Progspace" + self.name] = self
+ gdb.current_objfile().frame_filters ["ObjectFile" + self.name] = self
+
+ def filter (self, frame_iter):
+ return frame_iter
+
+class FrameObjFile2 ():
+
+ def __init__ (self):
+ self.name = "Filter2"
+ self.priority = 100
+ self.enabled = True
+ gdb.current_progspace().frame_filters ["Progspace" + self.name] = self
+ gdb.current_objfile().frame_filters ["ObjectFile" + self.name] = self
+
+ def filter (self, frame_iter):
+ return frame_iter
+
+FrameObjFile()
+FrameObjFile2()
diff --git a/gdb/testsuite/gdb.python/py-framefilter-invalidarg.exp b/gdb/testsuite/gdb.python/py-framefilter-invalidarg.exp
new file mode 100644
index 0000000..f70d16e
--- /dev/null
+++ b/gdb/testsuite/gdb.python/py-framefilter-invalidarg.exp
@@ -0,0 +1,67 @@
+# Copyright (C) 2014 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+load_lib gdb-python.exp
+
+standard_testfile amd64-py-framefilter-invalidarg.S
+
+if { ![istarget x86_64-*-* ] || ![is_lp64_target] } {
+ verbose "Skipping py-framefilter-invalidarg."
+ return
+}
+
+# We cannot use prepare_for_testing as we have to set the safe-patch
+# to check objfile and progspace printers.
+if {[build_executable $testfile.exp $testfile $srcfile {}] == -1} {
+ return -1
+}
+
+# Start with a fresh gdb.
+gdb_exit
+gdb_start
+
+# Skip all tests if Python scripting is not enabled.
+if { [skip_python_tests] } { continue }
+
+# Make the -gdb.py script available to gdb, it is automagically loaded by gdb.
+# Care is taken to put it in the same directory as the binary so that
+# gdb will find it.
+set remote_obj_python_file \
+ [remote_download \
+ host ${srcdir}/${subdir}/${testfile}-gdb.py.in \
+ [standard_output_file ${testfile}-gdb.py]]
+
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_test_no_output "set auto-load safe-path ${remote_obj_python_file}" \
+ "set auto-load safe-path"
+gdb_load ${binfile}
+# Verify gdb loaded the script.
+gdb_test "info auto-load python-scripts" "Yes.*/${testfile}-gdb.py.*" \
+ "Test auto-load had loaded python scripts"
+
+if ![runto_main] then {
+ perror "couldn't run to breakpoint"
+ return
+}
+gdb_test_no_output "set python print-stack full" \
+ "Set python print-stack to full"
+
+# Load global frame-filters
+set remote_python_file [gdb_remote_download host \
+ ${srcdir}/${subdir}/${testfile}.py]
+gdb_test_no_output "python exec (open ('${remote_python_file}').read ())" \
+ "Load python file"
+
+gdb_test "bt" " in niam \\(argc=<error reading variable: dwarf expression stack underflow>, argv=0x\[0-9a-f\]+\\) at py-framefilter-invalidarg.c:\[0-9\]+" "bt full with filters"
diff --git a/gdb/testsuite/gdb.python/py-framefilter-invalidarg.py b/gdb/testsuite/gdb.python/py-framefilter-invalidarg.py
new file mode 100644
index 0000000..d5f92cb
--- /dev/null
+++ b/gdb/testsuite/gdb.python/py-framefilter-invalidarg.py
@@ -0,0 +1,59 @@
+# Copyright (C) 2014 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+# This file is part of the GDB testsuite. It tests Python-based
+# frame-filters.
+import gdb
+import itertools
+from gdb.FrameDecorator import FrameDecorator
+import copy
+
+class Reverse_Function (FrameDecorator):
+
+ def __init__(self, fobj):
+ super(Reverse_Function, self).__init__(fobj)
+ self.fobj = fobj
+
+ def function (self):
+ fname = str (self.fobj.function())
+ if (fname == None or fname == ""):
+ return None
+ if fname == 'end_func':
+ extra = self.fobj.inferior_frame().read_var('str').string()
+ else:
+ extra = ''
+ fname = fname[::-1] + extra
+ return fname
+
+class FrameFilter ():
+
+ def __init__ (self):
+ self.name = "Reverse"
+ self.priority = 100
+ self.enabled = True
+ gdb.frame_filters [self.name] = self
+
+ def filter (self, frame_iter):
+ # Python 3.x moved the itertools.imap functionality to map(),
+ # so check if it is available.
+ if hasattr(itertools, "imap"):
+ frame_iter = itertools.imap (Reverse_Function,
+ frame_iter)
+ else:
+ frame_iter = map(Reverse_Function, frame_iter)
+
+ return frame_iter
+
+FrameFilter()
--d6Gm4EdcadzBjdND--