/* Perform non-arithmetic operations on values, for GDB.
- Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
- 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 1986-2012 Free Software Foundation, Inc.
This file is part of GDB.
#include "cp-support.h"
#include "dfp.h"
#include "user-regs.h"
-
+#include "tracepoint.h"
#include <errno.h>
#include "gdb_string.h"
#include "gdb_assert.h"
struct value **,
int, int *, struct type *);
-static int find_oload_champ_namespace (struct type **, int,
+static int find_oload_champ_namespace (struct value **, int,
const char *, const char *,
struct symbol ***,
struct badness_vector **,
const int no_adl);
static
-int find_oload_champ_namespace_loop (struct type **, int,
+int find_oload_champ_namespace_loop (struct value **, int,
const char *, const char *,
int, struct symbol ***,
struct badness_vector **, int *,
const int no_adl);
-static int find_oload_champ (struct type **, int, int, int,
+static int find_oload_champ (struct value **, int, int, int,
struct fn_field *, struct symbol **,
struct badness_vector **);
struct cmd_list_element *c,
const char *value)
{
- fprintf_filtered (file, _("\
-Overload resolution in evaluating C++ functions is %s.\n"),
+ fprintf_filtered (file, _("Overload resolution in evaluating "
+ "C++ functions is %s.\n"),
value);
}
else
{
if (!target_has_execution)
- error (_("evaluation of this expression requires the target program to be active"));
+ error (_("evaluation of this expression "
+ "requires the target program to be active"));
else
- error (_("evaluation of this expression requires the program to have a function \"%s\"."), name);
+ error (_("evaluation of this expression requires the "
+ "program to have a function \"%s\"."),
+ name);
}
}
}
if (value_logical_not (val))
{
if (!target_has_execution)
- error (_("No memory available to program now: you need to start the target first"));
+ error (_("No memory available to program now: "
+ "you need to start the target first"));
else
error (_("No memory available to program: call to malloc failed"));
}
/* Cast one pointer or reference type to another. Both TYPE and
the type of ARG2 should be pointer types, or else both should be
- reference types. Returns the new pointer or reference. */
+ reference types. If SUBCLASS_CHECK is non-zero, this will force a
+ check to see whether TYPE is a superclass of ARG2's type. If
+ SUBCLASS_CHECK is zero, then the subclass check is done only when
+ ARG2 is itself non-zero. Returns the new pointer or reference. */
struct value *
-value_cast_pointers (struct type *type, struct value *arg2)
+value_cast_pointers (struct type *type, struct value *arg2,
+ int subclass_check)
{
struct type *type1 = check_typedef (type);
struct type *type2 = check_typedef (value_type (arg2));
if (TYPE_CODE (t1) == TYPE_CODE_STRUCT
&& TYPE_CODE (t2) == TYPE_CODE_STRUCT
- && !value_logical_not (arg2))
+ && (subclass_check || !value_logical_not (arg2)))
{
struct value *v2;
v2 = coerce_ref (arg2);
else
v2 = value_ind (arg2);
- gdb_assert (TYPE_CODE (check_typedef (value_type (v2))) == TYPE_CODE_STRUCT
- && !!"Why did coercion fail?");
+ gdb_assert (TYPE_CODE (check_typedef (value_type (v2)))
+ == TYPE_CODE_STRUCT && !!"Why did coercion fail?");
v2 = value_cast_structs (t1, v2);
/* At this point we have what we can have, un-dereference if needed. */
if (v2)
if (code1 == TYPE_CODE_REF)
{
/* We dereference type; then we recurse and finally
- we generate value of the given reference. Nothing wrong with
+ we generate value of the given reference. Nothing wrong with
that. */
struct type *t1 = check_typedef (type);
struct type *dereftype = check_typedef (TYPE_TARGET_TYPE (t1));
low_bound = 0, high_bound = 0;
new_length = val_length / element_length;
if (val_length % element_length != 0)
- warning (_("array element type size does not divide object size in cast"));
+ warning (_("array element type size does not "
+ "divide object size in cast"));
/* FIXME-type-allocation: need a way to free this type when
we are done with it. */
range_type = create_range_type ((struct type *) NULL,
else if (TYPE_LENGTH (type) == TYPE_LENGTH (type2))
{
if (code1 == TYPE_CODE_PTR && code2 == TYPE_CODE_PTR)
- return value_cast_pointers (type, arg2);
+ return value_cast_pointers (type, arg2, 0);
arg2 = value_copy (arg2);
deprecated_set_value_type (arg2, type);
static int
dynamic_cast_check_1 (struct type *desired_type,
- const bfd_byte *contents,
+ const gdb_byte *valaddr,
+ int embedded_offset,
CORE_ADDR address,
+ struct value *val,
struct type *search_type,
CORE_ADDR arg_addr,
struct type *arg_type,
for (i = 0; i < TYPE_N_BASECLASSES (search_type) && result_count < 2; ++i)
{
- int offset = baseclass_offset (search_type, i, contents, address);
+ int offset = baseclass_offset (search_type, i, valaddr, embedded_offset,
+ address, val);
- if (offset == -1)
- error (_("virtual baseclass botch"));
if (class_types_same_p (desired_type, TYPE_BASECLASS (search_type, i)))
{
- if (address + offset >= arg_addr
- && address + offset < arg_addr + TYPE_LENGTH (arg_type))
+ if (address + embedded_offset + offset >= arg_addr
+ && address + embedded_offset + offset < arg_addr + TYPE_LENGTH (arg_type))
{
++result_count;
if (!*result)
*result = value_at_lazy (TYPE_BASECLASS (search_type, i),
- address + offset);
+ address + embedded_offset + offset);
}
}
else
result_count += dynamic_cast_check_1 (desired_type,
- contents + offset,
- address + offset,
+ valaddr,
+ embedded_offset + offset,
+ address, val,
TYPE_BASECLASS (search_type, i),
arg_addr,
arg_type,
static int
dynamic_cast_check_2 (struct type *desired_type,
- const bfd_byte *contents,
+ const gdb_byte *valaddr,
+ int embedded_offset,
CORE_ADDR address,
+ struct value *val,
struct type *search_type,
struct value **result)
{
if (! BASETYPE_VIA_PUBLIC (search_type, i))
continue;
- offset = baseclass_offset (search_type, i, contents, address);
- if (offset == -1)
- error (_("virtual baseclass botch"));
+ offset = baseclass_offset (search_type, i, valaddr, embedded_offset,
+ address, val);
if (class_types_same_p (desired_type, TYPE_BASECLASS (search_type, i)))
{
++result_count;
if (*result == NULL)
*result = value_at_lazy (TYPE_BASECLASS (search_type, i),
- address + offset);
+ address + embedded_offset + offset);
}
else
result_count += dynamic_cast_check_2 (desired_type,
- contents + offset,
- address + offset,
+ valaddr,
+ embedded_offset + offset,
+ address, val,
TYPE_BASECLASS (search_type, i),
result);
}
{
arg_type = check_typedef (TYPE_TARGET_TYPE (arg_type));
if (TYPE_CODE (arg_type) != TYPE_CODE_CLASS)
- error (_("Argument to dynamic_cast does not have pointer to class type"));
+ error (_("Argument to dynamic_cast does "
+ "not have pointer to class type"));
}
/* Handle NULL pointers. */
return tem;
result = NULL;
if (dynamic_cast_check_1 (TYPE_TARGET_TYPE (resolved_type),
- value_contents (tem), value_address (tem),
+ value_contents_for_printing (tem),
+ value_embedded_offset (tem),
+ value_address (tem), tem,
rtti_type, addr,
arg_type,
&result) == 1)
result = NULL;
if (is_public_ancestor (arg_type, rtti_type)
&& dynamic_cast_check_2 (TYPE_TARGET_TYPE (resolved_type),
- value_contents (tem), value_address (tem),
+ value_contents_for_printing (tem),
+ value_embedded_offset (tem),
+ value_address (tem), tem,
rtti_type, &result) == 1)
return value_cast (type,
is_ref ? value_ref (result) : value_addr (result));
{
struct value *val = allocate_value (type);
- VALUE_LVAL (val) = lv;
+ VALUE_LVAL (val) = (lv == lval_computed ? not_lval : lv);
return val;
}
-/* Create a value of numeric type TYPE that is one, and return it. */
+/* Create a not_lval value of numeric type TYPE that is one, and return it. */
struct value *
-value_one (struct type *type, enum lval_type lv)
+value_one (struct type *type)
{
struct type *type1 = check_typedef (type);
struct value *val;
val = allocate_value (type);
for (i = 0; i < high_bound - low_bound + 1; i++)
{
- tmp = value_one (eltype, lv);
+ tmp = value_one (eltype);
memcpy (value_contents_writeable (val) + i * TYPE_LENGTH (eltype),
value_contents_all (tmp), TYPE_LENGTH (eltype));
}
error (_("Not a numeric type."));
}
- VALUE_LVAL (val) = lv;
+ /* value_one result is never used for assignments to. */
+ gdb_assert (VALUE_LVAL (val) == not_lval);
+
return val;
}
if (TYPE_CODE (check_typedef (type)) == TYPE_CODE_VOID)
error (_("Attempt to dereference a generic pointer."));
- if (lazy)
- {
- val = allocate_value_lazy (type);
- }
- else
- {
- val = allocate_value (type);
- read_memory (addr, value_contents_all_raw (val), TYPE_LENGTH (type));
- }
+ val = value_from_contents_and_address (type, NULL, addr);
- VALUE_LVAL (val) = lval_memory;
- set_value_address (val, addr);
+ if (!lazy)
+ value_fetch_lazy (val);
return val;
}
enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
struct value *parent = value_parent (val);
LONGEST offset = value_offset (val);
- LONGEST num = unpack_bits_as_long (value_type (val),
- (value_contents_for_printing (parent)
- + offset),
- value_bitpos (val),
- value_bitsize (val));
+ LONGEST num;
int length = TYPE_LENGTH (type);
if (!value_bits_valid (val,
value_bitsize (val)))
error (_("value has been optimized out"));
- store_signed_integer (value_contents_raw (val), length, byte_order, num);
+ if (!unpack_value_bits_as_long (value_type (val),
+ value_contents_for_printing (parent),
+ offset,
+ value_bitpos (val),
+ value_bitsize (val), parent, &num))
+ mark_value_bytes_unavailable (val,
+ value_embedded_offset (val),
+ length);
+ else
+ store_signed_integer (value_contents_raw (val), length,
+ byte_order, num);
}
else if (VALUE_LVAL (val) == lval_memory)
{
int length = TYPE_LENGTH (check_typedef (value_enclosing_type (val)));
if (length)
- {
- if (value_stack (val))
- read_stack (addr, value_contents_all_raw (val), length);
- else
- read_memory (addr, value_contents_all_raw (val), length);
- }
+ read_value_memory (val, 0, value_stack (val),
+ addr, value_contents_all_raw (val), length);
}
else if (VALUE_LVAL (val) == lval_register)
{
if (value_lazy (new_val))
value_fetch_lazy (new_val);
- /* If the register was not saved, mark it unavailable. */
+ /* If the register was not saved, mark it optimized out. */
if (value_optimized_out (new_val))
set_value_optimized_out (val, 1);
else
- memcpy (value_contents_raw (val), value_contents (new_val),
- TYPE_LENGTH (type));
+ {
+ set_value_lazy (val, 0);
+ value_contents_copy (val, value_embedded_offset (val),
+ new_val, value_embedded_offset (new_val),
+ TYPE_LENGTH (type));
+ }
if (frame_debug)
{
regnum = VALUE_REGNUM (val);
gdbarch = get_frame_arch (frame);
- fprintf_unfiltered (gdb_stdlog, "\
-{ value_fetch_lazy (frame=%d,regnum=%d(%s),...) ",
+ fprintf_unfiltered (gdb_stdlog,
+ "{ value_fetch_lazy "
+ "(frame=%d,regnum=%d(%s),...) ",
frame_relative_level (frame), regnum,
user_reg_map_regnum_to_name (gdbarch, regnum));
watchpoints from trying to watch the saved frame pointer. */
value_free_to_mark (mark);
}
- else if (VALUE_LVAL (val) == lval_computed)
+ else if (VALUE_LVAL (val) == lval_computed
+ && value_computed_funcs (val)->read != NULL)
value_computed_funcs (val)->read (val);
+ else if (value_optimized_out (val))
+ /* Keep it optimized out. */;
else
- internal_error (__FILE__, __LINE__, "Unexpected lazy value type.");
+ internal_error (__FILE__, __LINE__, _("Unexpected lazy value type."));
set_value_lazy (val, 0);
return 0;
}
+void
+read_value_memory (struct value *val, int embedded_offset,
+ int stack, CORE_ADDR memaddr,
+ gdb_byte *buffer, size_t length)
+{
+ if (length)
+ {
+ VEC(mem_range_s) *available_memory;
+
+ if (get_traceframe_number () < 0
+ || !traceframe_available_memory (&available_memory, memaddr, length))
+ {
+ if (stack)
+ read_stack (memaddr, buffer, length);
+ else
+ read_memory (memaddr, buffer, length);
+ }
+ else
+ {
+ struct target_section_table *table;
+ struct cleanup *old_chain;
+ CORE_ADDR unavail;
+ mem_range_s *r;
+ int i;
+
+ /* Fallback to reading from read-only sections. */
+ table = target_get_section_table (&exec_ops);
+ available_memory =
+ section_table_available_memory (available_memory,
+ memaddr, length,
+ table->sections,
+ table->sections_end);
+
+ old_chain = make_cleanup (VEC_cleanup(mem_range_s),
+ &available_memory);
+
+ normalize_mem_ranges (available_memory);
+
+ /* Mark which bytes are unavailable, and read those which
+ are available. */
+
+ unavail = memaddr;
+
+ for (i = 0;
+ VEC_iterate (mem_range_s, available_memory, i, r);
+ i++)
+ {
+ if (mem_ranges_overlap (r->start, r->length,
+ memaddr, length))
+ {
+ CORE_ADDR lo1, hi1, lo2, hi2;
+ CORE_ADDR start, end;
+
+ /* Get the intersection window. */
+ lo1 = memaddr;
+ hi1 = memaddr + length;
+ lo2 = r->start;
+ hi2 = r->start + r->length;
+ start = max (lo1, lo2);
+ end = min (hi1, hi2);
+
+ gdb_assert (end - memaddr <= length);
+
+ if (start > unavail)
+ mark_value_bytes_unavailable (val,
+ (embedded_offset
+ + unavail - memaddr),
+ start - unavail);
+ unavail = end;
+
+ read_memory (start, buffer + start - memaddr, end - start);
+ }
+ }
+
+ if (unavail != memaddr + length)
+ mark_value_bytes_unavailable (val,
+ embedded_offset + unavail - memaddr,
+ (memaddr + length) - unavail);
+
+ do_cleanups (old_chain);
+ }
+ }
+}
/* Store the contents of FROMVAL into the location of TOVAL.
Return a new value with the location of TOVAL and contents of FROMVAL. */
changed_len = TYPE_LENGTH (type);
if (changed_len > (int) sizeof (LONGEST))
- error (_("Can't handle bitfields which don't fit in a %d bit word."),
+ error (_("Can't handle bitfields which "
+ "don't fit in a %d bit word."),
(int) sizeof (LONGEST) * HOST_CHAR_BIT);
read_memory (changed_addr, buffer, changed_len);
dest_buffer = value_contents (fromval);
}
- write_memory (changed_addr, dest_buffer, changed_len);
- observer_notify_memory_changed (changed_addr, changed_len,
- dest_buffer);
+ write_memory_with_notification (changed_addr, dest_buffer, changed_len);
}
break;
int offset = value_offset (parent) + value_offset (toval);
int changed_len;
gdb_byte buffer[sizeof (LONGEST)];
+ int optim, unavail;
changed_len = (value_bitpos (toval)
+ value_bitsize (toval)
/ HOST_CHAR_BIT;
if (changed_len > (int) sizeof (LONGEST))
- error (_("Can't handle bitfields which don't fit in a %d bit word."),
+ error (_("Can't handle bitfields which "
+ "don't fit in a %d bit word."),
(int) sizeof (LONGEST) * HOST_CHAR_BIT);
- get_frame_register_bytes (frame, value_reg, offset,
- changed_len, buffer);
+ if (!get_frame_register_bytes (frame, value_reg, offset,
+ changed_len, buffer,
+ &optim, &unavail))
+ {
+ if (optim)
+ error (_("value has been optimized out"));
+ if (unavail)
+ throw_error (NOT_AVAILABLE_ERROR,
+ _("value is not available"));
+ }
modify_field (type, buffer, value_as_long (fromval),
value_bitpos (toval), value_bitsize (toval));
case lval_computed:
{
- struct lval_funcs *funcs = value_computed_funcs (toval);
+ const struct lval_funcs *funcs = value_computed_funcs (toval);
- funcs->write (toval, fromval);
+ if (funcs->write != NULL)
+ {
+ funcs->write (toval, fromval);
+ break;
+ }
}
- break;
+ /* Fall through. */
default:
error (_("Left operand of assignment is not an lvalue."));
val = allocate_repeat_value (value_enclosing_type (arg1), count);
- read_memory (value_address (arg1),
- value_contents_all_raw (val),
- TYPE_LENGTH (value_enclosing_type (val)));
VALUE_LVAL (val) = lval_memory;
set_value_address (val, value_address (arg1));
+ read_value_memory (val, 0, value_stack (val), value_address (val),
+ value_contents_all_raw (val),
+ TYPE_LENGTH (value_enclosing_type (val)));
+
return val;
}
struct value *
-value_of_variable (struct symbol *var, struct block *b)
+value_of_variable (struct symbol *var, const struct block *b)
{
- struct value *val;
struct frame_info *frame;
if (!symbol_read_needs_frame (var))
}
}
- val = read_var_value (var, frame);
- if (!val)
- error (_("Address of symbol \"%s\" is unknown."), SYMBOL_PRINT_NAME (var));
-
- return val;
+ return read_var_value (var, frame);
}
struct value *
struct value *val;
/* Evaluate it first; if the result is a memory address, we're fine.
- Lazy evaluation pays off here. */
+ Lazy evaluation pays off here. */
val = value_of_variable (var, b);
}
}
-/* Make sure that VAL lives in target memory if it's supposed to. For instance,
- strings are constructed as character arrays in GDB's storage, and this
- function copies them to the target. */
+/* Make sure that VAL lives in target memory if it's supposed to. For
+ instance, strings are constructed as character arrays in GDB's
+ storage, and this function copies them to the target. */
struct value *
value_coerce_to_target (struct value *val)
other than array subscripting, where the caller would get back a
value that had an address somewhere before the actual first element
of the array, and the information about the lower bound would be
- lost because of the coercion to pointer type.
- */
+ lost because of the coercion to pointer type. */
struct value *
value_coerce_array (struct value *arg1)
if (VALUE_LVAL (arg1) != lval_memory)
error (_("Attempt to take address of value not located in memory."));
- /* Get target memory address */
+ /* Get target memory address. */
arg2 = value_from_pointer (lookup_pointer_type (value_type (arg1)),
(value_address (arg1)
+ value_embedded_offset (arg1)));
if (VALUE_LVAL (arg1) == lval_computed)
{
- struct lval_funcs *funcs = value_computed_funcs (arg1);
+ const struct lval_funcs *funcs = value_computed_funcs (arg1);
if (funcs->indirect)
{
arg2 = value_at_lazy (enc_type,
find_function_addr (arg1, NULL));
else
- /* Retrieve the enclosing object pointed to */
+ /* Retrieve the enclosing object pointed to. */
arg2 = value_at_lazy (enc_type,
(value_as_address (arg1)
- value_pointed_to_offset (arg1)));
- /* Re-adjust type. */
- deprecated_set_value_type (arg2, TYPE_TARGET_TYPE (base_type));
- /* Add embedding info. */
- set_value_enclosing_type (arg2, enc_type);
- set_value_embedded_offset (arg2, value_pointed_to_offset (arg1));
-
- /* We may be pointing to an object of some derived type. */
- arg2 = value_full_object (arg2, NULL, 0, 0, 0);
- return arg2;
+ return readjust_indirect_value_type (arg2, enc_type, base_type, arg1);
}
error (_("Attempt to take contents of a non-pointer value."));
return 0; /* For lint -- never reached. */
}
\f
-/* Create a value for an array by allocating space in GDB, copying
- copying the data into that space, and then setting up an array
- value.
+/* Create a value for an array by allocating space in GDB, copying the
+ data into that space, and then setting up an array value.
The array bounds are set from LOWBOUND and HIGHBOUND, and the array
is populated from the values passed in ELEMVEC.
{
val = allocate_value (arraytype);
for (idx = 0; idx < nelem; idx++)
- {
- memcpy (value_contents_all_raw (val) + (idx * typelength),
- value_contents_all (elemvec[idx]),
- typelength);
- }
+ value_contents_copy (val, idx * typelength, elemvec[idx], 0,
+ typelength);
return val;
}
val = allocate_value (arraytype);
for (idx = 0; idx < nelem; idx++)
- memcpy (value_contents_writeable (val) + (idx * typelength),
- value_contents_all (elemvec[idx]),
- typelength);
+ value_contents_copy (val, idx * typelength, elemvec[idx], 0, typelength);
return val;
}
if (TYPE_CODE (tt1) == TYPE_CODE_REF
/* We should be doing hairy argument matching, as below. */
- && (TYPE_CODE (check_typedef (TYPE_TARGET_TYPE (tt1))) == TYPE_CODE (tt2)))
+ && (TYPE_CODE (check_typedef (TYPE_TARGET_TYPE (tt1)))
+ == TYPE_CODE (tt2)))
{
if (TYPE_CODE (tt2) == TYPE_CODE_ARRAY)
t2[i] = value_coerce_array (t2[i]);
return i + 1;
}
-/* Helper function used by value_struct_elt to recurse through
- baseclasses. Look for a field NAME in ARG1. Adjust the address of
- ARG1 by OFFSET bytes, and search in it assuming it has (class) type
- TYPE. If found, return value, else return NULL.
+/* Helper class for do_search_struct_field that updates *RESULT_PTR
+ and *LAST_BOFFSET, and possibly throws an exception if the field
+ search has yielded ambiguous results. */
- If LOOKING_FOR_BASECLASS, then instead of looking for struct
- fields, look for a baseclass named NAME. */
+static void
+update_search_result (struct value **result_ptr, struct value *v,
+ int *last_boffset, int boffset,
+ const char *name, struct type *type)
+{
+ if (v != NULL)
+ {
+ if (*result_ptr != NULL
+ /* The result is not ambiguous if all the classes that are
+ found occupy the same space. */
+ && *last_boffset != boffset)
+ error (_("base class '%s' is ambiguous in type '%s'"),
+ name, TYPE_SAFE_NAME (type));
+ *result_ptr = v;
+ *last_boffset = boffset;
+ }
+}
-static struct value *
-search_struct_field (const char *name, struct value *arg1, int offset,
- struct type *type, int looking_for_baseclass)
+/* A helper for search_struct_field. This does all the work; most
+ arguments are as passed to search_struct_field. The result is
+ stored in *RESULT_PTR, which must be initialized to NULL.
+ OUTERMOST_TYPE is the type of the initial type passed to
+ search_struct_field; this is used for error reporting when the
+ lookup is ambiguous. */
+
+static void
+do_search_struct_field (const char *name, struct value *arg1, int offset,
+ struct type *type, int looking_for_baseclass,
+ struct value **result_ptr,
+ int *last_boffset,
+ struct type *outermost_type)
{
int i;
int nbases;
if (!looking_for_baseclass)
for (i = TYPE_NFIELDS (type) - 1; i >= nbases; i--)
{
- char *t_field_name = TYPE_FIELD_NAME (type, i);
+ const char *t_field_name = TYPE_FIELD_NAME (type, i);
if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
{
{
v = value_static_field (type, i);
if (v == 0)
- error (_("field %s is nonexistent or has been optimized out"),
+ error (_("field %s is nonexistent or "
+ "has been optimized out"),
name);
}
else
- {
- v = value_primitive_field (arg1, offset, i, type);
- if (v == 0)
- error (_("there is no field named %s"), name);
- }
- return v;
+ v = value_primitive_field (arg1, offset, i, type);
+ *result_ptr = v;
+ return;
}
if (t_field_name
represented as a struct, with a member for each
<variant field>. */
- struct value *v;
+ struct value *v = NULL;
int new_offset = offset;
/* This is pretty gross. In G++, the offset in an
&& TYPE_FIELD_BITPOS (field_type, 0) == 0))
new_offset += TYPE_FIELD_BITPOS (type, i) / 8;
- v = search_struct_field (name, arg1, new_offset,
- field_type,
- looking_for_baseclass);
+ do_search_struct_field (name, arg1, new_offset,
+ field_type,
+ looking_for_baseclass, &v,
+ last_boffset,
+ outermost_type);
if (v)
- return v;
+ {
+ *result_ptr = v;
+ return;
+ }
}
}
}
for (i = 0; i < nbases; i++)
{
- struct value *v;
+ struct value *v = NULL;
struct type *basetype = check_typedef (TYPE_BASECLASS (type, i));
/* If we are looking for baseclasses, this is what we get when
we hit them. But it could happen that the base part's member
&& (strcmp_iw (name,
TYPE_BASECLASS_NAME (type,
i)) == 0));
+ int boffset = value_embedded_offset (arg1) + offset;
if (BASETYPE_VIA_VIRTUAL (type, i))
{
- int boffset;
struct value *v2;
boffset = baseclass_offset (type, i,
- value_contents (arg1) + offset,
- value_address (arg1)
- + value_embedded_offset (arg1)
- + offset);
- if (boffset == -1)
- error (_("virtual baseclass botch"));
+ value_contents_for_printing (arg1),
+ value_embedded_offset (arg1) + offset,
+ value_address (arg1),
+ arg1);
/* The virtual base class pointer might have been clobbered
- by the user program. Make sure that it still points to a
+ by the user program. Make sure that it still points to a
valid memory location. */
boffset += value_embedded_offset (arg1) + offset;
}
if (found_baseclass)
- return v2;
- v = search_struct_field (name, v2, 0,
- TYPE_BASECLASS (type, i),
- looking_for_baseclass);
+ v = v2;
+ else
+ {
+ do_search_struct_field (name, v2, 0,
+ TYPE_BASECLASS (type, i),
+ looking_for_baseclass,
+ result_ptr, last_boffset,
+ outermost_type);
+ }
}
else if (found_baseclass)
v = value_primitive_field (arg1, offset, i, type);
else
- v = search_struct_field (name, arg1,
- offset + TYPE_BASECLASS_BITPOS (type,
- i) / 8,
- basetype, looking_for_baseclass);
- if (v)
- return v;
+ {
+ do_search_struct_field (name, arg1,
+ offset + TYPE_BASECLASS_BITPOS (type,
+ i) / 8,
+ basetype, looking_for_baseclass,
+ result_ptr, last_boffset,
+ outermost_type);
+ }
+
+ update_search_result (result_ptr, v, last_boffset,
+ boffset, name, outermost_type);
}
- return NULL;
}
/* Helper function used by value_struct_elt to recurse through
- baseclasses. Look for a field NAME in ARG1. Adjust the address of
+ baseclasses. Look for a field NAME in ARG1. Adjust the address of
+ ARG1 by OFFSET bytes, and search in it assuming it has (class) type
+ TYPE. If found, return value, else return NULL.
+
+ If LOOKING_FOR_BASECLASS, then instead of looking for struct
+ fields, look for a baseclass named NAME. */
+
+static struct value *
+search_struct_field (const char *name, struct value *arg1, int offset,
+ struct type *type, int looking_for_baseclass)
+{
+ struct value *result = NULL;
+ int boffset = 0;
+
+ do_search_struct_field (name, arg1, offset, type, looking_for_baseclass,
+ &result, &boffset, type);
+ return result;
+}
+
+/* Helper function used by value_struct_elt to recurse through
+ baseclasses. Look for a field NAME in ARG1. Adjust the address of
ARG1 by OFFSET bytes, and search in it assuming it has (class) type
TYPE.
CHECK_TYPEDEF (type);
for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; i--)
{
- char *t_field_name = TYPE_FN_FIELDLIST_NAME (type, i);
+ const char *t_field_name = TYPE_FN_FIELDLIST_NAME (type, i);
- /* FIXME! May need to check for ARM demangling here */
+ /* FIXME! May need to check for ARM demangling here. */
if (strncmp (t_field_name, "__", 2) == 0 ||
strncmp (t_field_name, "op", 2) == 0 ||
strncmp (t_field_name, "type", 4) == 0)
name_matched = 1;
check_stub_method_group (type, i);
if (j > 0 && args == 0)
- error (_("cannot resolve overloaded method `%s': no arguments supplied"), name);
+ error (_("cannot resolve overloaded method "
+ "`%s': no arguments supplied"), name);
else if (j == 0 && args == 0)
{
v = value_fn_field (arg1p, f, j, type, offset);
for (i = TYPE_N_BASECLASSES (type) - 1; i >= 0; i--)
{
int base_offset;
+ int skip = 0;
+ int this_offset;
if (BASETYPE_VIA_VIRTUAL (type, i))
{
struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
+ struct value *base_val;
const gdb_byte *base_valaddr;
/* The virtual base class pointer might have been
- clobbered by the user program. Make sure that it
+ clobbered by the user program. Make sure that it
still points to a valid memory location. */
if (offset < 0 || offset >= TYPE_LENGTH (type))
{
gdb_byte *tmp = alloca (TYPE_LENGTH (baseclass));
+ CORE_ADDR address = value_address (*arg1p);
- if (target_read_memory (value_address (*arg1p) + offset,
+ if (target_read_memory (address + offset,
tmp, TYPE_LENGTH (baseclass)) != 0)
error (_("virtual baseclass botch"));
- base_valaddr = tmp;
+
+ base_val = value_from_contents_and_address (baseclass,
+ tmp,
+ address + offset);
+ base_valaddr = value_contents_for_printing (base_val);
+ this_offset = 0;
}
else
- base_valaddr = value_contents (*arg1p) + offset;
+ {
+ base_val = *arg1p;
+ base_valaddr = value_contents_for_printing (*arg1p);
+ this_offset = offset;
+ }
base_offset = baseclass_offset (type, i, base_valaddr,
- value_address (*arg1p) + offset);
- if (base_offset == -1)
- error (_("virtual baseclass botch"));
+ this_offset, value_address (base_val),
+ base_val);
}
else
{
ERR is used in the error message if *ARGP's type is wrong.
C++: ARGS is a list of argument types to aid in the selection of
- an appropriate method. Also, handle derived types.
+ an appropriate method. Also, handle derived types.
STATIC_MEMFUNCP, if non-NULL, points to a caller-supplied location
where the truthvalue of whether the function that was resolved was
if (TYPE_CODE (t) != TYPE_CODE_STRUCT
&& TYPE_CODE (t) != TYPE_CODE_UNION)
- error (_("Attempt to extract a component of a value that is not a %s."), err);
+ error (_("Attempt to extract a component of a value that is not a %s."),
+ err);
/* Assume it's not, unless we see that it is. */
if (static_memfuncp)
if (v == (struct value *) - 1)
{
- error (_("One of the arguments you tried to pass to %s could not be converted to what the function wants."), name);
+ error (_("One of the arguments you tried to pass to %s could not "
+ "be converted to what the function wants."), name);
}
else if (v == 0)
{
NUM_FNS is the number of overloaded instances.
BASETYPE is set to the actual type of the subobject where the
method is found.
- BOFFSET is the offset of the base subobject where the method is found.
-*/
+ BOFFSET is the offset of the base subobject where the method is found. */
static struct fn_field *
find_method_list (struct value **argp, const char *method,
for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; i--)
{
/* pai: FIXME What about operators and type conversions? */
- char *fn_field_name = TYPE_FN_FIELDLIST_NAME (type, i);
+ const char *fn_field_name = TYPE_FN_FIELDLIST_NAME (type, i);
if (fn_field_name && (strcmp_iw (fn_field_name, method) == 0))
{
if (BASETYPE_VIA_VIRTUAL (type, i))
{
- base_offset = value_offset (*argp) + offset;
base_offset = baseclass_offset (type, i,
- value_contents (*argp) + base_offset,
- value_address (*argp) + base_offset);
- if (base_offset == -1)
- error (_("virtual baseclass botch"));
+ value_contents_for_printing (*argp),
+ value_offset (*argp) + offset,
+ value_address (*argp), *argp);
}
else /* Non-virtual base, simply use bit position from debug
info. */
NUM_FNS is the number of overloaded instances.
BASETYPE is set to the type of the base subobject that defines the
method.
- BOFFSET is the offset of the base subobject which defines the method.
-*/
+ BOFFSET is the offset of the base subobject which defines the method. */
-struct fn_field *
+static struct fn_field *
value_find_oload_method_list (struct value **argp, const char *method,
int offset, int *num_fns,
struct type **basetype, int *boffset)
if (TYPE_CODE (t) != TYPE_CODE_STRUCT
&& TYPE_CODE (t) != TYPE_CODE_UNION)
- error (_("Attempt to extract a component of a value that is not a struct or union"));
+ error (_("Attempt to extract a component of a "
+ "value that is not a struct or union"));
return find_method_list (argp, method, 0, t, num_fns,
basetype, boffset);
}
-/* Given an array of argument types (ARGTYPES) (which includes an
+/* Given an array of arguments (ARGS) (which includes an
entry for "this" in the case of C++ methods), the number of
arguments NARGS, the NAME of a function whether it's a method or
not (METHOD), and the degree of laxness (LAX) in conforming to
METHOD: for member functions.
BOTH: used for overload resolution of operators where the
candidates are expected to be either member or non member
- functions. In this case the first argument ARGTYPES
+ functions. In this case the first argument ARGTYPES
(representing 'this') is expected to be a reference to the
target object, and will be dereferenced when attempting the
non-member search.
Note: This function does *not* check the value of
overload_resolution. Caller must check it to see whether overload
- resolution is permitted.
-*/
+ resolution is permitted. */
int
-find_overload_match (struct type **arg_types, int nargs,
+find_overload_match (struct value **args, int nargs,
const char *name, enum oload_search_type method,
int lax, struct value **objp, struct symbol *fsym,
struct value **valp, struct symbol **symp,
int *staticp, const int no_adl)
{
struct value *obj = (objp ? *objp : NULL);
+ struct type *obj_type = obj ? value_type (obj) : NULL;
/* Index of best overloaded function. */
int func_oload_champ = -1;
int method_oload_champ = -1;
if (*valp)
{
*staticp = 1;
+ do_cleanups (all_cleanups);
return 0;
}
}
if (fns_ptr)
{
gdb_assert (TYPE_DOMAIN_TYPE (fns_ptr[0].type) != NULL);
- method_oload_champ = find_oload_champ (arg_types, nargs, method,
+ method_oload_champ = find_oload_champ (args, nargs, method,
num_fns, fns_ptr,
oload_syms, &method_badness);
{
const char *qualified_name = NULL;
- /* If the the overload match is being search for both
- as a method and non member function, the first argument
- must now be dereferenced. */
+ /* If the overload match is being search for both as a method
+ and non member function, the first argument must now be
+ dereferenced. */
if (method == BOTH)
- arg_types[0] = TYPE_TARGET_TYPE (arg_types[0]);
+ args[0] = value_ind (args[0]);
if (fsym)
{
the function part. Do not try this for non-functions (e.g.
function pointers). */
if (qualified_name
- && TYPE_CODE (check_typedef (SYMBOL_TYPE (fsym))) == TYPE_CODE_FUNC)
+ && TYPE_CODE (check_typedef (SYMBOL_TYPE (fsym)))
+ == TYPE_CODE_FUNC)
{
char *temp;
if (func_name == NULL)
{
*symp = fsym;
+ do_cleanups (all_cleanups);
return 0;
}
- func_oload_champ = find_oload_champ_namespace (arg_types, nargs,
+ func_oload_champ = find_oload_champ_namespace (args, nargs,
func_name,
qualified_name,
&oload_syms,
switch (compare_badness (func_badness, method_badness))
{
case 0: /* Top two contenders are equally good. */
- /* FIXME: GDB does not support the general ambiguous
- case. All candidates should be collected and presented
- the the user. */
+ /* FIXME: GDB does not support the general ambiguous case.
+ All candidates should be collected and presented the
+ user. */
error (_("Ambiguous overload resolution"));
break;
case 1: /* Incomparable top contenders. */
/* This is an error incompatible candidates
should not have been proposed. */
- error (_("Internal error: incompatible overload candidates proposed"));
+ error (_("Internal error: incompatible "
+ "overload candidates proposed"));
break;
case 2: /* Function champion. */
method_oload_champ = -1;
else if (match_quality == NON_STANDARD)
{
if (method == METHOD)
- warning (_("Using non-standard conversion to match method %s%s%s to supplied arguments"),
+ warning (_("Using non-standard conversion to match "
+ "method %s%s%s to supplied arguments"),
obj_type_name,
(obj_type_name && *obj_type_name) ? "::" : "",
name);
else
- warning (_("Using non-standard conversion to match function %s to supplied arguments"),
+ warning (_("Using non-standard conversion to match "
+ "function %s to supplied arguments"),
func_name);
}
if (objp)
{
struct type *temp_type = check_typedef (value_type (temp));
- struct type *obj_type = check_typedef (value_type (*objp));
+ struct type *objtype = check_typedef (obj_type);
if (TYPE_CODE (temp_type) != TYPE_CODE_PTR
- && (TYPE_CODE (obj_type) == TYPE_CODE_PTR
- || TYPE_CODE (obj_type) == TYPE_CODE_REF))
+ && (TYPE_CODE (objtype) == TYPE_CODE_PTR
+ || TYPE_CODE (objtype) == TYPE_CODE_REF))
{
temp = value_addr (temp);
}
performned. */
static int
-find_oload_champ_namespace (struct type **arg_types, int nargs,
+find_oload_champ_namespace (struct value **args, int nargs,
const char *func_name,
const char *qualified_name,
struct symbol ***oload_syms,
{
int oload_champ;
- find_oload_champ_namespace_loop (arg_types, nargs,
+ find_oload_champ_namespace_loop (args, nargs,
func_name,
qualified_name, 0,
oload_syms, oload_champ_bv,
*OLOAD_CHAMP_BV. */
static int
-find_oload_champ_namespace_loop (struct type **arg_types, int nargs,
+find_oload_champ_namespace_loop (struct value **args, int nargs,
const char *func_name,
const char *qualified_name,
int namespace_len,
*oload_syms = NULL;
*oload_champ_bv = NULL;
- /* First, see if we have a deeper namespace we can search in.
+ /* First, see if we have a deeper namespace we can search in.
If we get a good match there, use it. */
if (qualified_name[next_namespace_len] == ':')
{
searched_deeper = 1;
- if (find_oload_champ_namespace_loop (arg_types, nargs,
+ if (find_oload_champ_namespace_loop (args, nargs,
func_name, qualified_name,
next_namespace_len,
oload_syms, oload_champ_bv,
/* If we have reached the deepest level perform argument
determined lookup. */
if (!searched_deeper && !no_adl)
- make_symbol_overload_list_adl (arg_types, nargs, func_name);
+ {
+ int ix;
+ struct type **arg_types;
+
+ /* Prepare list of argument types for overload resolution. */
+ arg_types = (struct type **)
+ alloca (nargs * (sizeof (struct type *)));
+ for (ix = 0; ix < nargs; ix++)
+ arg_types[ix] = value_type (args[ix]);
+ make_symbol_overload_list_adl (arg_types, nargs, func_name);
+ }
while (new_oload_syms[num_fns])
++num_fns;
- new_oload_champ = find_oload_champ (arg_types, nargs, 0, num_fns,
+ new_oload_champ = find_oload_champ (args, nargs, 0, num_fns,
NULL, new_oload_syms,
&new_oload_champ_bv);
}
}
-/* Look for a function to take NARGS args of types ARG_TYPES. Find
+/* Look for a function to take NARGS args of ARGS. Find
the best match from among the overloaded methods or functions
(depending on METHOD) given by FNS_PTR or OLOAD_SYMS, respectively.
The number of methods/functions in the list is given by NUM_FNS.
It is the caller's responsibility to free *OLOAD_CHAMP_BV. */
static int
-find_oload_champ (struct type **arg_types, int nargs, int method,
+find_oload_champ (struct value **args, int nargs, int method,
int num_fns, struct fn_field *fns_ptr,
struct symbol **oload_syms,
struct badness_vector **oload_champ_bv)
/* Compare parameter types to supplied argument types. Skip
THIS for static methods. */
bv = rank_function (parm_types, nparms,
- arg_types + static_offset,
+ args + static_offset,
nargs - static_offset);
if (!*oload_champ_bv)
{
if (method)
fprintf_filtered (gdb_stderr,
- "Overloaded method instance %s, # of parms %d\n",
+ "Overloaded method instance %s, # of parms %d\n",
fns_ptr[ix].physname, nparms);
else
fprintf_filtered (gdb_stderr,
- "Overloaded function instance %s # of parms %d\n",
+ "Overloaded function instance "
+ "%s # of parms %d\n",
SYMBOL_DEMANGLED_NAME (oload_syms[ix]),
nparms);
for (jj = 0; jj < nargs - static_offset; jj++)
fprintf_filtered (gdb_stderr,
"...Badness @ %d : %d\n",
jj, bv->rank[jj].rank);
- fprintf_filtered (gdb_stderr,
- "Overload resolution champion is %d, ambiguous? %d\n",
+ fprintf_filtered (gdb_stderr, "Overload resolution "
+ "champion is %d, ambiguous? %d\n",
oload_champ, oload_ambiguous);
}
}
int static_offset)
{
int ix;
+ enum oload_classification worst = STANDARD;
for (ix = 1; ix <= nargs - static_offset; ix++)
{
NS_POINTER_CONVERSION_BADNESS or worse return NON_STANDARD. */
else if (compare_ranks (oload_champ_bv->rank[ix],
NS_POINTER_CONVERSION_BADNESS) <= 0)
- return NON_STANDARD; /* Non-standard type conversions
+ worst = NON_STANDARD; /* Non-standard type conversions
needed. */
}
- return STANDARD; /* Only standard conversions needed. */
+ /* If no INCOMPATIBLE classification was found, return the worst one
+ that was found (if any). */
+ return worst;
}
/* C++: return 1 is NAME is a legitimate name for the destructor of
type TYPE. If TYPE does not have a destructor, or if NAME is
- inappropriate for TYPE, an error is signaled. */
+ inappropriate for TYPE, an error is signaled. Parameter TYPE should not yet
+ have CHECK_TYPEDEF applied, this function will apply it itself. */
+
int
-destructor_name_p (const char *name, const struct type *type)
+destructor_name_p (const char *name, struct type *type)
{
if (name[0] == '~')
{
- char *dname = type_name_no_tag (type);
- char *cp = strchr (dname, '<');
+ const char *dname = type_name_no_tag_or_error (type);
+ const char *cp = strchr (dname, '<');
unsigned int len;
/* Do not compare the template part for template classes. */
for (i = TYPE_NFIELDS (type) - 1; i >= TYPE_N_BASECLASSES (type); i--)
{
- char *t_field_name = TYPE_FIELD_NAME (type, i);
+ const char *t_field_name = TYPE_FIELD_NAME (type, i);
if (t_field_name && (strcmp_iw (t_field_name, name) == 0))
return 1;
}
/* Compares the two method/function types T1 and T2 for "equality"
- with respect to the the methods' parameters. If the types of the
+ with respect to the methods' parameters. If the types of the
two parameter lists are the same, returns 1; 0 otherwise. This
comparison may ignore any artificial parameters in T1 if
SKIP_ARTIFICIAL is non-zero. This function will ALWAYS skip
{
int start = 0;
- if (TYPE_FIELD_ARTIFICIAL (t1, 0))
+ if (TYPE_NFIELDS (t1) > 0 && TYPE_FIELD_ARTIFICIAL (t1, 0))
++start;
/* If skipping artificial fields, find the first real field
- in T1. */
+ in T1. */
if (skip_artificial)
{
while (start < TYPE_NFIELDS (t1)
++start;
}
- /* Now compare parameters */
+ /* Now compare parameters. */
/* Special case: a method taking void. T1 will contain no
non-artificial fields, and T2 will contain TYPE_CODE_VOID. */
for (i = 0; i < TYPE_NFIELDS (t2); ++i)
{
if (compare_ranks (rank_one_type (TYPE_FIELD_TYPE (t1, start + i),
- TYPE_FIELD_TYPE (t2, i)),
+ TYPE_FIELD_TYPE (t2, i), NULL),
EXACT_MATCH_BADNESS) != 0)
return 0;
}
if (TYPE_CODE (t) != TYPE_CODE_STRUCT
&& TYPE_CODE (t) != TYPE_CODE_UNION)
- error (_("Internal error: non-aggregate type to value_struct_elt_for_reference"));
+ error (_("Internal error: non-aggregate type "
+ "to value_struct_elt_for_reference"));
for (i = TYPE_NFIELDS (t) - 1; i >= TYPE_N_BASECLASSES (t); i--)
{
- char *t_field_name = TYPE_FIELD_NAME (t, i);
+ const char *t_field_name = TYPE_FIELD_NAME (t, i);
if (t_field_name && strcmp (t_field_name, name) == 0)
{
for (i = TYPE_NFN_FIELDS (t) - 1; i >= 0; --i)
{
- char *t_field_name = TYPE_FN_FIELDLIST_NAME (t, i);
+ const char *t_field_name = TYPE_FN_FIELDLIST_NAME (t, i);
char dem_opname[64];
if (strncmp (t_field_name, "__", 2) == 0
for (j = 0; j < len; ++j)
{
if (compare_parameters (TYPE_FN_FIELD_TYPE (f, j), intype, 0)
- || compare_parameters (TYPE_FN_FIELD_TYPE (f, j), intype, 1))
+ || compare_parameters (TYPE_FN_FIELD_TYPE (f, j),
+ intype, 1))
break;
}
if (j == len)
- error (_("no member function matches that type instantiation"));
+ error (_("no member function matches "
+ "that type instantiation"));
}
else
{
int ii;
j = -1;
- for (ii = 0; ii < TYPE_FN_FIELDLIST_LENGTH (t, i);
- ++ii)
+ for (ii = 0; ii < len; ++ii)
{
/* Skip artificial methods. This is necessary if,
for example, the user wants to "print
subclass::subclass" with only one user-defined
- constructor. There is no ambiguity in this
- case. */
+ constructor. There is no ambiguity in this case.
+ We are careful here to allow artificial methods
+ if they are the unique result. */
if (TYPE_FN_FIELD_ARTIFICIAL (f, ii))
- continue;
+ {
+ if (j == -1)
+ j = ii;
+ continue;
+ }
/* Desired method is ambiguous if more than one
method is defined. */
- if (j != -1)
- error (_("non-unique member `%s' requires type instantiation"), name);
+ if (j != -1 && !TYPE_FN_FIELD_ARTIFICIAL (f, j))
+ error (_("non-unique member `%s' requires "
+ "type instantiation"), name);
j = ii;
}
+
+ if (j == -1)
+ error (_("no matching member function"));
}
if (TYPE_FN_FIELD_STATIC_P (f, j))
return result;
}
-/* Given a pointer value V, find the real (RTTI) type of the object it
- points to.
+/* Given a pointer or a reference value V, find its real (RTTI) type.
Other parameters FULL, TOP, USING_ENC as with value_rtti_type()
and refer to the values computed for the object pointed to. */
struct type *
-value_rtti_target_type (struct value *v, int *full,
- int *top, int *using_enc)
+value_rtti_indirect_type (struct value *v, int *full,
+ int *top, int *using_enc)
{
struct value *target;
+ struct type *type, *real_type, *target_type;
+
+ type = value_type (v);
+ type = check_typedef (type);
+ if (TYPE_CODE (type) == TYPE_CODE_REF)
+ target = coerce_ref (v);
+ else if (TYPE_CODE (type) == TYPE_CODE_PTR)
+ target = value_ind (v);
+ else
+ return NULL;
+
+ real_type = value_rtti_type (target, full, top, using_enc);
+
+ if (real_type)
+ {
+ /* Copy qualifiers to the referenced object. */
+ target_type = value_type (target);
+ real_type = make_cv_type (TYPE_CONST (target_type),
+ TYPE_VOLATILE (target_type), real_type, NULL);
+ if (TYPE_CODE (type) == TYPE_CODE_REF)
+ real_type = lookup_reference_type (real_type);
+ else if (TYPE_CODE (type) == TYPE_CODE_PTR)
+ real_type = lookup_pointer_type (real_type);
+ else
+ internal_error (__FILE__, __LINE__, _("Unexpected value type."));
- target = value_ind (v);
+ /* Copy qualifiers to the pointer/reference. */
+ real_type = make_cv_type (TYPE_CONST (type), TYPE_VOLATILE (type),
+ real_type, NULL);
+ }
- return value_rtti_type (target, full, top, using_enc);
+ return real_type;
}
/* Given a value pointed to by ARGP, check its real run-time type, and
if (!real_type || real_type == value_enclosing_type (argp))
return argp;
+ /* In a destructor we might see a real type that is a superclass of
+ the object's type. In this case it is better to leave the object
+ as-is. */
+ if (full
+ && TYPE_LENGTH (real_type) < TYPE_LENGTH (value_enclosing_type (argp)))
+ return argp;
+
/* If we have the full object, but for some reason the enclosing
type is wrong, set it. */
/* pai: FIXME -- sounds iffy */
return argp;
}
- /* Check if object is in memory */
+ /* Check if object is in memory. */
if (VALUE_LVAL (argp) != lval_memory)
{
- warning (_("Couldn't retrieve complete object of RTTI type %s; object may be in register(s)."),
+ warning (_("Couldn't retrieve complete object of RTTI "
+ "type %s; object may be in register(s)."),
TYPE_NAME (real_type));
return argp;
}
-/* Return the value of the local variable, if one exists.
- Flag COMPLAIN signals an error if the request is made in an
- inappropriate context. */
+/* Return the value of the local variable, if one exists. Throw error
+ otherwise, such as if the request is made in an inappropriate context. */
struct value *
-value_of_local (const char *name, int complain)
+value_of_this (const struct language_defn *lang)
{
- struct symbol *func, *sym;
+ struct symbol *sym;
struct block *b;
- struct value * ret;
struct frame_info *frame;
- if (complain)
- frame = get_selected_frame (_("no frame selected"));
- else
- {
- frame = deprecated_safe_get_selected_frame ();
- if (frame == 0)
- return 0;
- }
+ if (!lang->la_name_of_this)
+ error (_("no `this' in current language"));
- func = get_frame_function (frame);
- if (!func)
- {
- if (complain)
- error (_("no `%s' in nameless context"), name);
- else
- return 0;
- }
+ frame = get_selected_frame (_("no frame selected"));
- b = SYMBOL_BLOCK_VALUE (func);
- if (dict_empty (BLOCK_DICT (b)))
- {
- if (complain)
- error (_("no args, no `%s'"), name);
- else
- return 0;
- }
+ b = get_frame_block (frame, NULL);
- /* Calling lookup_block_symbol is necessary to get the LOC_REGISTER
- symbol instead of the LOC_ARG one (if both exist). */
- sym = lookup_block_symbol (b, name, VAR_DOMAIN);
+ sym = lookup_language_this (lang, b);
if (sym == NULL)
- {
- if (complain)
- error (_("current stack frame does not contain a variable named `%s'"),
- name);
- else
- return NULL;
- }
+ error (_("current stack frame does not contain a variable named `%s'"),
+ lang->la_name_of_this);
- ret = read_var_value (sym, frame);
- if (ret == 0 && complain)
- error (_("`%s' argument unreadable"), name);
- return ret;
+ return read_var_value (sym, frame);
}
-/* C++/Objective-C: return the value of the class instance variable,
- if one exists. Flag COMPLAIN signals an error if the request is
- made in an inappropriate context. */
+/* Return the value of the local variable, if one exists. Return NULL
+ otherwise. Never throw error. */
struct value *
-value_of_this (int complain)
+value_of_this_silent (const struct language_defn *lang)
{
- if (!current_language->la_name_of_this)
- return 0;
- return value_of_local (current_language->la_name_of_this, complain);
+ struct value *ret = NULL;
+ volatile struct gdb_exception except;
+
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ ret = value_of_this (lang);
+ }
+
+ return ret;
}
/* Create a slice (sub-string, sub-array) of ARRAY, that is LENGTH
else
{
slice = allocate_value (slice_type);
- memcpy (value_contents_writeable (slice),
- value_contents (array) + offset,
- TYPE_LENGTH (slice_type));
+ value_contents_copy (slice, 0, array, offset,
+ TYPE_LENGTH (slice_type));
}
set_value_component_location (slice, array);
projects / deliverable / binutils-gdb.git / blobdiff