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2002-08-19 David Carlton <carlton@math.stanford.edu> 

* valops.c (search_struct_field): Change error message to treat
	return value of 0 from value_static_field as meaning that field is
	optimized out.
	(value_struct_elt_for_reference): Ditto.
	* values.c (value_static_field): Treat an unresolved location the
	same as a nonexistent symbol.  Fix PR gdb/635.
This commit is contained in:
David Carlton 2002-08-19 23:19:53 +00:00
parent 2a73a662d6
commit 2c2738a0e0
3 changed files with 29 additions and 7 deletions
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6
gdb/ChangeLog
View File

@ -1,5 +1,11 @@
2002-08-19 David Carlton <carlton@math.stanford.edu>
* valops.c (search_struct_field): Change error message to treat
return value of 0 from value_static_field as meaning that field is
optimized out.
(value_struct_elt_for_reference): Ditto.
* values.c (value_static_field): Treat an unresolved location the
same as a nonexistent symbol. Fix PR gdb/635.
* gnu-v2-abi.c (gnuv2_value_rtti_type): Eliminate test for being
enclosed. Fix PR gdb/574.
* MAINTAINERS: Add self to Write After Approval list.

17
gdb/valops.c
View File

@ -2054,11 +2054,18 @@ search_struct_field (char *name, struct value *arg1, int offset,
{
struct value *v;
if (TYPE_FIELD_STATIC (type, i))
v = value_static_field (type, i);
{
v = value_static_field (type, i);
if (v == 0)
error ("field %s is nonexistent or has been optimised out",
name);
}
else
v = value_primitive_field (arg1, offset, i, type);
if (v == 0)
error ("there is no field named %s", name);
{
v = value_primitive_field (arg1, offset, i, type);
if (v == 0)
error ("there is no field named %s", name);
}
return v;
}
@ -3043,7 +3050,7 @@ value_struct_elt_for_reference (struct type *domain, int offset,
{
v = value_static_field (t, i);
if (v == NULL)
error ("Internal error: could not find static variable %s",
error ("static field %s has been optimized out",
name);
return v;
}

13
gdb/values.c
View File

@ -793,7 +793,9 @@ unpack_pointer (struct type *type, char *valaddr)
}
/* Get the value of the FIELDN'th field (which must be static) of TYPE. */
/* Get the value of the FIELDN'th field (which must be static) of
TYPE. Return NULL if the field doesn't exist or has been
optimized out. */
struct value *
value_static_field (struct type *type, int fieldno)
@ -809,7 +811,14 @@ value_static_field (struct type *type, int fieldno)
{
char *phys_name = TYPE_FIELD_STATIC_PHYSNAME (type, fieldno);
struct symbol *sym = lookup_symbol (phys_name, 0, VAR_NAMESPACE, 0, NULL);
if (sym == NULL)
/* In some cases (involving uninitalized, unreferenced static
const integral members), g++ -gdwarf-2 can emit debugging
information giving rise to symbols whose SYMBOL_CLASS is
LOC_UNRESOLVED. In that case, do a minimal symbol lookup.
If it returns a useful value, then the symbol was defined
elsewhere, so we use that information. Otherwise, return
NULL. */
if (sym == NULL || SYMBOL_CLASS (sym) == LOC_UNRESOLVED)
{
/* With some compilers, e.g. HP aCC, static data members are reported
as non-debuggable symbols */