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re PR c++/23699 (rejects static int as non constant after "extern template")

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PR c++/23699
	* decl2.c (mark_used): Always instantiate static data members
	initialized by constant expressions.
	* pt.c (instantiate_decl): Instantiate the initializers for static
	data members initialized by constant expressions.

	PR c++/21687
	* semantics.c (expand_or_defer_fn): Do not call ggc_collect when
	finishing processing for a template function in a local class.
	Revert:
	2005-09-02  Mark Mitchell  <mark@codesourcery.com>
	* parser.c (cp_parser_class_specifier): Push/pop GC contexts
	around functions in local classes.

	PR c++/23699
	* g++.dg/ext/static1.C: New test.

From-SVN: r103806
This commit is contained in:
Mark Mitchell 2005-09-03 18:18:48 +00:00 committed by Mark Mitchell
parent 7c95bbfbdd
commit 2725073463
6 changed files with 50 additions and 19 deletions
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16
gcc/cp/ChangeLog
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@ -1,3 +1,19 @@
2005-09-03 Mark Mitchell <mark@codesourcery.com>
PR c++/23699
* decl2.c (mark_used): Always instantiate static data members
initialized by constant expressions.
* pt.c (instantiate_decl): Instantiate the initializers for static
data members initialized by constant expressions.
PR c++/21687
* semantics.c (expand_or_defer_fn): Do not call ggc_collect when
finishing processing for a template function in a local class.
Revert:
2005-09-02 Mark Mitchell <mark@codesourcery.com>
* parser.c (cp_parser_class_specifier): Push/pop GC contexts
around functions in local classes.
2005-09-02 Mark Mitchell <mark@codesourcery.com>
PR c++/21687

7
gcc/cp/decl2.c
View File

@ -3270,7 +3270,12 @@ mark_used (tree decl)
&& (!DECL_EXPLICIT_INSTANTIATION (decl)
|| (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_INLINE (DECL_TEMPLATE_RESULT
(template_for_substitution (decl))))))
(template_for_substitution (decl))))
/* We need to instantiate static data members so that there
initializers are available in integral constant
expressions. */
|| (TREE_CODE (decl) == VAR_DECL
&& DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (decl))))
/* We put off instantiating functions in order to improve compile
times. Maintaining a stack of active functions is expensive,
and the inliner knows to instantiate any functions it might

16
gcc/cp/parser.c
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@ -12673,9 +12673,6 @@ cp_parser_class_specifier (cp_parser* parser)
tree fn;
tree class_type = NULL_TREE;
tree pushed_scope = NULL_TREE;
/* True if we have called ggc_push_context, and therefore need
to make a matching call to ggc_pop_context. */
bool need_ggc_pop_context;
/* In a first pass, parse default arguments to the functions.
Then, in a second pass, parse the bodies of the functions.
@ -12712,7 +12709,6 @@ cp_parser_class_specifier (cp_parser* parser)
}
if (pushed_scope)
pop_scope (pushed_scope);
need_ggc_pop_context = false;
/* Now parse the body of the functions. */
for (TREE_VALUE (parser->unparsed_functions_queues)
= nreverse (TREE_VALUE (parser->unparsed_functions_queues));
@ -12722,21 +12718,9 @@ cp_parser_class_specifier (cp_parser* parser)
{
/* Figure out which function we need to process. */
fn = TREE_VALUE (queue_entry);
/* We call ggc_collect after processing a function body in
order to clean up garbage generated. If we're processing
a local class, however, then we must not clean up stuff
from the function containing the class, so we have to
push a new garbage-collection context. */
if (function_depth && !need_ggc_pop_context)
{
need_ggc_pop_context = true;
ggc_push_context ();
}
/* Parse the function. */
cp_parser_late_parsing_for_member (parser, fn);
}
if (need_ggc_pop_context)
ggc_pop_context ();
}
/* Put back any saved access checks. */

7
gcc/cp/semantics.c
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@ -3044,8 +3044,11 @@ expand_or_defer_fn (tree fn)
/* Normally, collection only occurs in rest_of_compilation. So,
if we don't collect here, we never collect junk generated
during the processing of templates until we hit a
non-template function. */
ggc_collect ();
non-template function. It's not safe to do this inside a
nested class, though, as the parser may have local state that
is not a GC root. */
if (!function_depth)
ggc_collect ();
return;
}

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2005-09-03 Mark Mitchell <mark@codesourcery.com>
PR c++/23699
* g++.dg/ext/static1.C: New test.
2005-09-02 Richard Henderson <rth@redhat.com>
* gcc.c-torture/execute/frame-address.c (check_fa_mid): Avoid

18
gcc/testsuite/g++.dg/ext/static1.C Normal file
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@ -0,0 +1,18 @@
// PR c++/23699
// { dg-options "" }
template<typename _CharT > class basic_string;
typedef basic_string<char> string;
template<typename _CharT>
struct basic_string
{
static const int npos = -1;
};
template<typename _CharT>
const int basic_string<_CharT>::npos;
extern template class basic_string<char>;
struct A
{
static const long npos = string::npos;
};