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2011-07-28 Phil Muldoon <pmuldoon@redhat.com> 

* varobj.c (value_get_print_value): Move hint check later into the
	function.  Comment function.  Free thevalue before reusing it.

2011-07-28  Phil Muldoon  <pmuldoon@redhat.com>

	* gdb.python/py-mi.exp: Test printers returning string hint, and
	also not returning a value.
	* gdb.python/py-prettyprint.c: Add testcase for above.
	* gdb.python/py-prettyprint.py: Add test printer for above.
This commit is contained in:
Phil Muldoon 2011-07-28 10:36:40 +00:00
parent e89702a8bd
commit 00bd41d6bc
6 changed files with 71 additions and 9 deletions
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5
gdb/ChangeLog
View File

@ -1,3 +1,8 @@
2011-07-28 Phil Muldoon <pmuldoon@redhat.com>
* varobj.c (value_get_print_value): Move hint check later into the
function. Comment function. Free thevalue before reusing it.
2011-07-27 Jan Kratochvil <jan.kratochvil@redhat.com>
Pedro Alves <pedro@codesourcery.com>

7
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,10 @@
2011-07-28 Phil Muldoon <pmuldoon@redhat.com>
* gdb.python/py-mi.exp: Test printers returning string hint, and
also not returning a value.
* gdb.python/py-prettyprint.c: Add testcase for above.
* gdb.python/py-prettyprint.py: Add test printer for above.
2011-07-27 Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.dwarf2/dw2-simple-locdesc.S: Change DWARF version to 3.

7
gdb/testsuite/gdb.python/py-mi.exp
View File

@ -284,6 +284,13 @@ mi_list_varobj_children nstype2 {
{ {nstype2.<error at 0>} {<error at 0>} 6 {char \[6\]} }
} "list children after setting exception flag"
mi_create_varobj me me \
"create me varobj"
mi_gdb_test "-var-evaluate-expression me" \
"\\^done,value=\"<error reading variable: Cannot access memory.>.*\"" \
"evaluate me varobj"
# C++ MI tests
gdb_exit
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}-cxx" \

8
gdb/testsuite/gdb.python/py-prettyprint.c
View File

@ -149,6 +149,11 @@ struct justchildren
typedef struct justchildren nostring_type;
struct memory_error
{
const char *s;
};
struct container
{
string name;
@ -227,6 +232,7 @@ main ()
/* Clearing by being `static' could invoke an other GDB C++ bug. */
struct nullstr nullstr;
nostring_type nstype, nstype2;
struct memory_error me;
struct ns ns, ns2;
struct lazystring estring, estring2;
struct hint_error hint_error;
@ -234,6 +240,8 @@ main ()
nstype.elements = narray;
nstype.len = 0;
me.s = "blah";
init_ss(&ss, 1, 2);
init_ss(ssa+0, 3, 4);
init_ss(ssa+1, 5, 6);

15
gdb/testsuite/gdb.python/py-prettyprint.py
View File

@ -17,6 +17,7 @@
# printers.
import re
import gdb
# Test returning a Value from a printer.
class string_print:
@ -186,6 +187,18 @@ class pp_outer:
yield 's', self.val['s']
yield 'x', self.val['x']
class MemoryErrorString:
"Raise an error"
def __init__(self, val):
self.val = val
def to_string(self):
raise gdb.MemoryError ("Cannot access memory.");
def display_hint (self):
return 'string'
def lookup_function (val):
"Look-up and return a pretty-printer that can print val."
@ -261,6 +274,8 @@ def register_pretty_printers ():
pretty_printers_dict[re.compile ('^struct hint_error$')] = pp_hint_error
pretty_printers_dict[re.compile ('^hint_error$')] = pp_hint_error
pretty_printers_dict[re.compile ('^memory_error$')] = MemoryErrorString
pretty_printers_dict = {}
register_pretty_printers ()

38
gdb/varobj.c
View File

@ -2610,25 +2610,21 @@ value_get_print_value (struct value *value, enum varobj_display_formats format,
if (PyObject_HasAttr (value_formatter, gdbpy_to_string_cst))
{
char *hint;
struct value *replacement;
PyObject *output = NULL;
hint = gdbpy_get_display_hint (value_formatter);
if (hint)
{
if (!strcmp (hint, "string"))
string_print = 1;
xfree (hint);
}
output = apply_varobj_pretty_printer (value_formatter,
&replacement,
stb);
/* If we have string like output ... */
if (output)
{
make_cleanup_py_decref (output);
/* If this is a lazy string, extract it. For lazy
strings we always print as a string, so set
string_print. */
if (gdbpy_is_lazy_string (output))
{
gdbpy_extract_lazy_string (output, &str_addr, &type,
@ -2638,12 +2634,27 @@ value_get_print_value (struct value *value, enum varobj_display_formats format,
}
else
{
/* If it is a regular (non-lazy) string, extract
it and copy the contents into THEVALUE. If the
hint says to print it as a string, set
string_print. Otherwise just return the extracted
string as a value. */
PyObject *py_str
= python_string_to_target_python_string (output);
if (py_str)
{
char *s = PyString_AsString (py_str);
char *hint;
hint = gdbpy_get_display_hint (value_formatter);
if (hint)
{
if (!strcmp (hint, "string"))
string_print = 1;
xfree (hint);
}
len = PyString_Size (py_str);
thevalue = xmemdup (s, len + 1, len + 1);
@ -2662,6 +2673,9 @@ value_get_print_value (struct value *value, enum varobj_display_formats format,
gdbpy_print_stack ();
}
}
/* If the printer returned a replacement value, set VALUE
to REPLACEMENT. If there is not a replacement value,
just use the value passed to this function. */
if (replacement)
value = replacement;
}
@ -2672,12 +2686,18 @@ value_get_print_value (struct value *value, enum varobj_display_formats format,
get_formatted_print_options (&opts, format_code[(int) format]);
opts.deref_ref = 0;
opts.raw = 1;
/* If the THEVALUE has contents, it is a regular string. */
if (thevalue)
LA_PRINT_STRING (stb, type, thevalue, len, encoding, 0, &opts);
else if (string_print)
/* Otherwise, if string_print is set, and it is not a regular
string, it is a lazy string. */
val_print_string (type, encoding, str_addr, len, stb, &opts);
else
/* All other cases. */
common_val_print (value, stb, 0, &opts, current_language);
thevalue = ui_file_xstrdup (stb, NULL);
do_cleanups (old_chain);