https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65380
--- Comment #10 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Actually perhaps we manage to produce external alias of non-external symbol
that also should not happen.
Index: ipa-icf.c
===================================================================
--- ipa-icf.c (revision 221461)
+++ ipa-icf.c (working copy)
@@ -809,6 +809,15 @@ sem_function::merge (sem_item *alias_ite
bool original_address_matters = original->address_matters_p ();
bool alias_address_matters = alias->address_matters_p ();
+ if (DECL_EXTERNAL (alias->decl))
+ {
+ if (dump_file)
+ fprintf (dump_file,
+ "Not unifying; "
+ "alias is external.\n\n");
+ return false;
+ }
+
if (DECL_NO_INLINE_WARNING_P (original->decl)
!= DECL_NO_INLINE_WARNING_P (alias->decl))
{
@@ -1767,6 +1870,14 @@ sem_variable::merge (sem_item *alias_ite
"Symbol aliases are not supported by target\n\n");
return false;
}
+ if (DECL_EXTERNAL (alias->decl))
+ {
+ if (dump_file)
+ fprintf (dump_file,
+ "Not unifying; "
+ "alias is external.\n\n");
+ return false;
+ }
sem_variable *alias_var = static_cast<sem_variable *> (alias_item);
May help.
