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PR c++/88049 - ICE with undefined destructor and anon namespace.

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A type in an anonymous namespace can never be merged with one from
another translation unit, so a member of such a type is always its own
prevailing decl.

	* lto-symtab.c (lto_symtab_prevailing_virtual_decl): Return early
	for a type in an anonymous namespace.

From-SVN: r269283
This commit is contained in:
Jason Merrill 2019-02-28 12:29:48 -05:00 committed by Jason Merrill
parent 6b7e4afbdc
commit 80f52b400e
3 changed files with 28 additions and 2 deletions
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6
gcc/lto/ChangeLog
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@ -1,3 +1,9 @@
2019-02-28 Jason Merrill <jason@redhat.com>
PR c++/88049 - ICE with undefined destructor and anon namespace.
* lto-symtab.c (lto_symtab_prevailing_virtual_decl): Return early
for a type in an anonymous namespace.
2019-01-09 Sandra Loosemore <sandra@codesourcery.com>
PR other/16615

8
gcc/lto/lto-symtab.c
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@ -1085,8 +1085,12 @@ lto_symtab_prevailing_virtual_decl (tree decl)
{
if (DECL_ABSTRACT_P (decl))
return decl;
gcc_checking_assert (!type_in_anonymous_namespace_p (DECL_CONTEXT (decl))
&& DECL_ASSEMBLER_NAME_SET_P (decl));
if (type_in_anonymous_namespace_p (DECL_CONTEXT (decl)))
/* There can't be any other declarations. */
return decl;
gcc_checking_assert (DECL_ASSEMBLER_NAME_SET_P (decl));
symtab_node *n = symtab_node::get_for_asmname
(DECL_ASSEMBLER_NAME (decl));

16
gcc/testsuite/g++.dg/lto/pr88049_0.C Normal file
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@ -0,0 +1,16 @@
// PR c++/88049
// { dg-lto-do link }
// { dg-lto-options {{ -flto -O2 -w }} }
// { dg-extra-ld-options -r }
template <typename> class a;
class b {};
template <typename e> a<e> d(char);
template <typename> class a : public b {
public:
virtual ~a();
};
namespace {
class f;
b c = d<f>(int());
} // namespace