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compiler: Fix unsafe.Sizeof for named structs with named struct fields.

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From-SVN: r188295
This commit is contained in:
Ian Lance Taylor 2012-06-07 05:49:44 +00:00
parent cba0366cac
commit c59a4d0fa6
2 changed files with 14 additions and 2 deletions
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9
gcc/go/gofrontend/types.cc
View file

@ -7863,6 +7863,10 @@ Find_type_use::type(Type* type)
bool
Named_type::do_verify()
{
if (this->is_verified_)
return true;
this->is_verified_ = true;
Find_type_use find(this);
Type::traverse(this->type_, &find);
if (find.found())
@ -7973,6 +7977,11 @@ Named_type::convert(Gogo* gogo)
this->create_placeholder(gogo);
// If we are called to turn unsafe.Sizeof into a constant, we may
// not have verified the type yet. We have to make sure it is
// verified, since that sets the list of dependencies.
this->verify();
// Convert all the dependencies. If they refer indirectly back to
// this type, they will pick up the intermediate tree we just
// created.

7
gcc/go/gofrontend/types.h
View file

@ -2628,8 +2628,9 @@ class Named_type : public Type
interface_method_tables_(NULL), pointer_interface_method_tables_(NULL),
location_(location), named_btype_(NULL), dependencies_(),
is_visible_(true), is_error_(false), is_placeholder_(false),
is_converted_(false), is_circular_(false), seen_(false),
seen_in_compare_is_identity_(false), seen_in_get_backend_(false)
is_converted_(false), is_circular_(false), is_verified_(false),
seen_(false), seen_in_compare_is_identity_(false),
seen_in_get_backend_(false)
{ }
// Return the associated Named_object. This holds the actual name.
@ -2908,6 +2909,8 @@ class Named_type : public Type
// Whether this is a pointer or function type which refers to the
// type itself.
bool is_circular_;
// Whether this type has been verified.
bool is_verified_;
// In a recursive operation such as has_hidden_fields, this flag is
// used to prevent infinite recursion when a type refers to itself.
// This is mutable because it is always reset to false when the