From: Vladimir Mezentsev <vladimir.mezent...@oracle.com>
When weakref_targets is not empty a target cannot be removed from the weak list.
A small example is below when 'wv12' is removed from the weak list on aarch64:
static vtype Wv12 __attribute__((weakref ("wv12")));
extern vtype wv12 __attribute__((weak));
Bootstrapped on aarch64-unknown-linux-gnu including (c,c++ and go).
Tested on aarch64-linux-gnu.
No regression. The attr-weakref-1.c test passed.
ChangeLog:
2018-05-10 Vladimir Mezentsev <vladimir.mezent...@oracle.com>
PR gcc/84923
* varasm.c (weak_finish): clean up weak_decls
---
gcc/varasm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/gcc/varasm.c b/gcc/varasm.c
index 85296b4..8cf6e1e 100644
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -5652,7 +5652,8 @@ weak_finish (void)
tree alias_decl = TREE_PURPOSE (t);
tree target = ultimate_transparent_alias_target (&TREE_VALUE (t));
- if (! TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (alias_decl)))
+ if (! TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (alias_decl))
+ || TREE_SYMBOL_REFERENCED (target))
/* Remove alias_decl from the weak list, but leave entries for
the target alone. */
target = NULL_TREE;
--
1.8.3.1
