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Base support for <unavailable> value contents.

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gdb/
	* value.h (value_bytes_available): Declare.
	(mark_value_bytes_unavailable): Declare.
	* value.c (struct range): New struct.
	(range_s): New typedef.
	(ranges_overlap): New function.
	(range_lessthan): New function.
	(ranges_contain_p): New function.
	(struct value) <unavailable>: New field.
	(value_bytes_available): New function.
	(mark_value_bytes_unavailable): New function.
	(require_not_optimized_out): Constify parameter.
	(require_available): New function.
	(value_contents_all, value_contents): Require all bytes be
	available.
	(value_free): Free `unavailable'.
	(value_copy): Copy `unavailable'.
	* valprint.h (val_print_unavailable): Declare.
	* valprint.c (valprint_check_validity): Rename `offset' parameter
	to `embedded_offset'.  If printing a scalar, check whether the
	value chunk is available.
	(val_print_unavailable): New.
	(val_print_scalar_formatted): Check whether the value is
	available.
	* python/py-prettyprint.c (apply_val_pretty_printer): Refuse
	pretty-printing unavailable values.
This commit is contained in:
Pedro Alves 2011-02-14 11:10:53 +00:00
parent 498cd2a0fd
commit 4e07d55ffb
6 changed files with 364 additions and 5 deletions
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5
gdb/python/py-prettyprint.c
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@ -690,6 +690,11 @@ apply_val_pretty_printer (struct type *type, const gdb_byte *valaddr,
struct cleanup *cleanups;
int result = 0;
enum string_repr_result print_result;
/* No pretty-printer support for unavailable values. */
if (!value_bytes_available (val, embedded_offset, TYPE_LENGTH (type)))
return 0;
cleanups = ensure_python_env (gdbarch, language);
/* Instantiate the printer. */