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Allow C-c to work in backtrace in more cases

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PR cli/17716 notes that it is difficult to C-c (or "q" at a pagination
prompt) while backtracing using a frame filter.  One reason for this
is that many places in py-framefilter.c use RETURN_MASK_ALL in a
try/catch.

This patch changes these spots to use RETURN_MASK_ERROR instead.  This
is safe to do because this entire file is exception safe now.

gdb/ChangeLog
2018-03-26  Tom Tromey  <tom@tromey.com>

	PR cli/17716:
	* python/py-framefilter.c (py_print_type, py_print_value)
	(enumerate_args, py_print_args, gdbpy_apply_frame_filter): Use
	RETURN_MASK_ERROR.
This commit is contained in:
Tom Tromey
2017-04-24 20:59:37 -06:00
parent 7a630bc2f9
commit 92256134f3
2 changed files with 18 additions and 11 deletions
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22
gdb/python/py-framefilter.c
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@ -215,7 +215,7 @@ py_print_type (struct ui_out *out, struct value *val)
type_print (value_type (val), "", &stb, -1);
out->field_stream ("type", stb);
}
CATCH (except, RETURN_MASK_ALL)
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
return EXT_LANG_BT_ERROR;
@ -255,7 +255,7 @@ py_print_value (struct ui_out *out, struct value *val,
{
type = check_typedef (value_type (val));
}
CATCH (except, RETURN_MASK_ALL)
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
return EXT_LANG_BT_ERROR;
@ -282,7 +282,7 @@ py_print_value (struct ui_out *out, struct value *val,
common_val_print (val, &stb, indent, opts, language);
out->field_stream ("value", stb);
}
CATCH (except, RETURN_MASK_ALL)
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
return EXT_LANG_BT_ERROR;
@ -497,7 +497,7 @@ enumerate_args (PyObject *iter,
{
annotate_frame_args ();
}
CATCH (except, RETURN_MASK_ALL)
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
return EXT_LANG_BT_ERROR;
@ -553,7 +553,7 @@ enumerate_args (PyObject *iter,
{
read_frame_arg (sym, frame, &arg, &entryarg);
}
CATCH (except, RETURN_MASK_ALL)
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
return EXT_LANG_BT_ERROR;
@ -586,7 +586,7 @@ enumerate_args (PyObject *iter,
out->text (", ");
out->wrap_hint (" ");
}
CATCH (except, RETURN_MASK_ALL)
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
return EXT_LANG_BT_ERROR;
@ -622,7 +622,7 @@ enumerate_args (PyObject *iter,
{
out->text (", ");
}
CATCH (except, RETURN_MASK_ALL)
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
return EXT_LANG_BT_ERROR;
@ -636,7 +636,7 @@ enumerate_args (PyObject *iter,
{
annotate_arg_end ();
}
CATCH (except, RETURN_MASK_ALL)
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
return EXT_LANG_BT_ERROR;
@ -867,7 +867,7 @@ py_print_args (PyObject *filter,
if (! out->is_mi_like_p ())
out->text (" (");
}
CATCH (except, RETURN_MASK_ALL)
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
return EXT_LANG_BT_ERROR;
@ -884,7 +884,7 @@ py_print_args (PyObject *filter,
if (! out->is_mi_like_p ())
out->text (")");
}
CATCH (except, RETURN_MASK_ALL)
CATCH (except, RETURN_MASK_ERROR)
{
gdbpy_convert_exception (except);
return EXT_LANG_BT_ERROR;
@ -1336,7 +1336,7 @@ gdbpy_apply_frame_filter (const struct extension_language_defn *extlang,
{
gdbarch = get_frame_arch (frame);
}
CATCH (except, RETURN_MASK_ALL)
CATCH (except, RETURN_MASK_ERROR)
{
/* Let gdb try to print the stack trace. */
return EXT_LANG_BT_NO_FILTERS;