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decl2.c (maybe_make_one_only): New fn.

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* decl2.c (maybe_make_one_only): New fn.
	(import_export_vtable): Use it.
	(import_export_decl): Likewise.
	* pt.c (mark_decl_instantiated): Likewise.

From-SVN: r19921
This commit is contained in:
Jason Merrill 1998-05-21 05:42:51 +00:00 committed by Jason Merrill
parent cb96daa2dc
commit b385c8412e
3 changed files with 37 additions and 8 deletions
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7
gcc/cp/ChangeLog
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@ -1,3 +1,10 @@
1998-05-21 Jason Merrill <jason@yorick.cygnus.com>
* decl2.c (maybe_make_one_only): New fn.
(import_export_vtable): Use it.
(import_export_decl): Likewise.
* pt.c (mark_decl_instantiated): Likewise.
1998-05-21 Mark Mitchell <mmitchell@usa.net>
* decl2.c (find_representative_member): Rename to ...

34
gcc/cp/decl2.c
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@ -2451,6 +2451,30 @@ comdat_linkage (decl)
DECL_COMDAT (decl) = 1;
}
/* For win32 we also want to put explicit instantiations in
linkonce sections, so that they will be merged with implicit
instantiations; otherwise we get duplicate symbol errors. */
void
maybe_make_one_only (decl)
tree decl;
{
/* This is not necessary on targets that support weak symbols, because
the implicit instantiations will defer to the explicit one. */
if (! supports_one_only () || SUPPORTS_WEAK)
return;
/* We can't set DECL_COMDAT on functions, or finish_file will think
we can get away with not emitting them if they aren't used.
We can't use make_decl_one_only for variables, because their
DECL_INITIAL may not have been set properly yet. */
if (TREE_CODE (decl) == FUNCTION_DECL)
make_decl_one_only (decl);
else
comdat_linkage (decl);
}
/* Set TREE_PUBLIC and/or DECL_EXTERN on the vtable DECL,
based on TYPE and other static flags.
@ -2481,9 +2505,8 @@ import_export_vtable (decl, type, final)
/* For WIN32 we also want to put explicit instantiations in
linkonce sections. */
if (CLASSTYPE_EXPLICIT_INSTANTIATION (type)
&& supports_one_only () && ! SUPPORTS_WEAK)
make_decl_one_only (decl);
if (CLASSTYPE_EXPLICIT_INSTANTIATION (type))
maybe_make_one_only (decl);
}
else
{
@ -2769,9 +2792,8 @@ import_export_decl (decl)
/* For WIN32 we also want to put explicit instantiations in
linkonce sections. */
if (CLASSTYPE_EXPLICIT_INSTANTIATION (ctype)
&& supports_one_only () && ! SUPPORTS_WEAK)
make_decl_one_only (decl);
if (CLASSTYPE_EXPLICIT_INSTANTIATION (ctype))
maybe_make_one_only (decl);
}
else if (TYPE_BUILT_IN (ctype) && ctype == TYPE_MAIN_VARIANT (ctype))
DECL_NOT_REALLY_EXTERN (decl) = 0;

4
gcc/cp/pt.c
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@ -6444,8 +6444,8 @@ mark_decl_instantiated (result, extern_p)
/* For WIN32 we also want to put explicit instantiations in
linkonce sections. */
if (supports_one_only () && ! SUPPORTS_WEAK && TREE_PUBLIC (result))
make_decl_one_only (result);
if (TREE_PUBLIC (result))
maybe_make_one_only (result);
}
else if (TREE_CODE (result) == FUNCTION_DECL)
mark_inline_for_output (result);