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go-gcc.cc (Gcc_backend::non_zero_size_type): If a struct has a fields... 

* go-gcc.cc (Gcc_backend::non_zero_size_type): If a struct has a
	fields, recreate those fields with the first one with a non-zero
	size.

From-SVN: r201222
This commit is contained in:
Ian Lance Taylor 2013-07-24 18:25:51 +00:00 committed by Ian Lance Taylor
parent 08d22f9b41
commit f1e1872559
2 changed files with 41 additions and 14 deletions
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6
gcc/go/ChangeLog
View File

@ -1,3 +1,9 @@
2013-07-24 Ian Lance Taylor <iant@google.com>
* go-gcc.cc (Gcc_backend::non_zero_size_type): If a struct has a
fields, recreate those fields with the first one with a non-zero
size.
2013-07-23 Ian Lance Taylor <iant@google.com> 2013-07-23 Ian Lance Taylor <iant@google.com>
* go-backend.c: Don't #include "rtl.h". * go-backend.c: Don't #include "rtl.h".

49
gcc/go/go-gcc.cc
View File

@ -1242,20 +1242,41 @@ Gcc_backend::non_zero_size_type(tree type)
switch (TREE_CODE(type)) switch (TREE_CODE(type))
{ {
case RECORD_TYPE: case RECORD_TYPE:
{ if (TYPE_FIELDS(type) != NULL_TREE)
if (go_non_zero_struct == NULL_TREE) {
{ tree ns = make_node(RECORD_TYPE);
type = make_node(RECORD_TYPE); tree field_trees = NULL_TREE;
tree field = build_decl(UNKNOWN_LOCATION, FIELD_DECL, tree *pp = &field_trees;
get_identifier("dummy"), for (tree field = TYPE_FIELDS(type);
boolean_type_node); field != NULL_TREE;
DECL_CONTEXT(field) = type; field = DECL_CHAIN(field))
TYPE_FIELDS(type) = field; {
layout_type(type); tree ft = TREE_TYPE(field);
go_non_zero_struct = type; if (field == TYPE_FIELDS(type))
} ft = non_zero_size_type(ft);
return go_non_zero_struct; tree f = build_decl(DECL_SOURCE_LOCATION(field), FIELD_DECL,
} DECL_NAME(field), ft);
DECL_CONTEXT(f) = ns;
*pp = f;
pp = &DECL_CHAIN(f);
}
TYPE_FIELDS(ns) = field_trees;
layout_type(ns);
return ns;
}
if (go_non_zero_struct == NULL_TREE)
{
type = make_node(RECORD_TYPE);
tree field = build_decl(UNKNOWN_LOCATION, FIELD_DECL,
get_identifier("dummy"),
boolean_type_node);
DECL_CONTEXT(field) = type;
TYPE_FIELDS(type) = field;
layout_type(type);
go_non_zero_struct = type;
}
return go_non_zero_struct;
case ARRAY_TYPE: case ARRAY_TYPE:
{ {