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* [Bug mi/18833] New: gdb.execute ("set param value", to_string=True) will crash gdb if using MI
@ 2015-08-17 1:35 xdje42 at gmail dot com
2015-08-17 2:08 ` [Bug mi/18833] " xdje42 at gmail dot com
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: xdje42 at gmail dot com @ 2015-08-17 1:35 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=18833
Bug ID: 18833
Summary: gdb.execute ("set param value", to_string=True) will
crash gdb if using MI
Product: gdb
Version: unknown
Status: NEW
Severity: normal
Priority: P2
Component: mi
Assignee: unassigned at sourceware dot org
Reporter: xdje42 at gmail dot com
Target Milestone: ---
I'm getting a gdb crash due to executing the following from python while using
MI:
gdb.execute ("set debug-file-dir /foo:/bar", to_string=True)
The problem is that MI only supports one level of redirection:
int
mi_redirect (struct ui_out *uiout, struct ui_file *outstream)
{
mi_out_data *data = ui_out_data (uiout);
if (outstream != NULL)
{
data->original_buffer = data->buffer;
data->buffer = outstream;
}
else if (data->original_buffer != NULL)
{
data->buffer = data->original_buffer;
data->original_buffer = NULL;
}
return 0;
}
So when gdb calls mi_command_param_changed, the redirection there loses the
original buffer. The first level of redirection is due to to_string=True.
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* [Bug mi/18833] gdb.execute ("set param value", to_string=True) will crash gdb if using MI
2015-08-17 1:35 [Bug mi/18833] New: gdb.execute ("set param value", to_string=True) will crash gdb if using MI xdje42 at gmail dot com
@ 2015-08-17 2:08 ` xdje42 at gmail dot com
2015-08-17 22:09 ` dje at google dot com
2015-08-22 17:09 ` xdje42 at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: xdje42 at gmail dot com @ 2015-08-17 2:08 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=18833
--- Comment #1 from Doug Evans <xdje42 at gmail dot com> ---
The cli version of uiout redirection support handles multiple levels of
redirection.
static int
cli_redirect (struct ui_out *uiout, struct ui_file *outstream)
{
cli_out_data *data = ui_out_data (uiout);
if (outstream != NULL)
VEC_safe_push (ui_filep, data->streams, outstream);
else
VEC_pop (ui_filep, data->streams);
return 0;
}
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* [Bug mi/18833] gdb.execute ("set param value", to_string=True) will crash gdb if using MI
2015-08-17 1:35 [Bug mi/18833] New: gdb.execute ("set param value", to_string=True) will crash gdb if using MI xdje42 at gmail dot com
2015-08-17 2:08 ` [Bug mi/18833] " xdje42 at gmail dot com
@ 2015-08-17 22:09 ` dje at google dot com
2015-08-22 17:09 ` xdje42 at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: dje at google dot com @ 2015-08-17 22:09 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=18833
dje at google dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dje at google dot com
--- Comment #2 from dje at google dot com ---
For a previous patch, see:
https://sourceware.org/ml/gdb-patches/2015-08/msg00438.html
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* [Bug mi/18833] gdb.execute ("set param value", to_string=True) will crash gdb if using MI
2015-08-17 1:35 [Bug mi/18833] New: gdb.execute ("set param value", to_string=True) will crash gdb if using MI xdje42 at gmail dot com
2015-08-17 2:08 ` [Bug mi/18833] " xdje42 at gmail dot com
2015-08-17 22:09 ` dje at google dot com
@ 2015-08-22 17:09 ` xdje42 at gmail dot com
2 siblings, 0 replies; 4+ messages in thread
From: xdje42 at gmail dot com @ 2015-08-22 17:09 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=18833
Doug Evans <xdje42 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Doug Evans <xdje42 at gmail dot com> ---
Patch checked in.
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end of thread, other threads:[~2015-08-22 17:09 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2015-08-17 1:35 [Bug mi/18833] New: gdb.execute ("set param value", to_string=True) will crash gdb if using MI xdje42 at gmail dot com
2015-08-17 2:08 ` [Bug mi/18833] " xdje42 at gmail dot com
2015-08-17 22:09 ` dje at google dot com
2015-08-22 17:09 ` xdje42 at gmail dot com
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