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2010-04-08 Phil Muldoon <pmuldoon@redhat.com>

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PR python/11417

	* python/py-lazy-string.c (stpy_convert_to_value): Check for
          a NULL address.
	  (gdbpy_create_lazy_string_object): Allow strings with a NULL
          address and a zero length.

2010-04-08  Phil Muldoon  <pmuldoon@redhat.com>

	* gdb.python/py-value: Add null string variable.
	  (test_lazy_string): Test zero length, NULL address lazy
	  strings.
This commit is contained in:
Phil Muldoon
2010-04-08 10:28:42 +00:00
parent f8c4f48020
commit fff5cc649e
5 changed files with 32 additions and 3 deletions
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12
gdb/python/py-lazy-string.c
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@@ -94,6 +94,13 @@ stpy_convert_to_value (PyObject *self, PyObject *args)
lazy_string_object *self_string = (lazy_string_object *) self;
struct value *val;
if (self_string->address == 0)
{
PyErr_SetString (PyExc_MemoryError,
"Cannot create a value from NULL");
return NULL;
}
val = value_at_lazy (self_string->type, self_string->address);
return value_to_value_object (val);
}
@@ -111,10 +118,11 @@ gdbpy_create_lazy_string_object (CORE_ADDR address, long length,
{
lazy_string_object *str_obj = NULL;
if (address == 0)
if (address == 0 && length != 0)
{
PyErr_SetString (PyExc_MemoryError,
"Cannot create a lazy string from a GDB-side string.");
_("Cannot create a lazy string with address 0x0, " \
"and a non-zero length."));
return NULL;
}