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-rw-r--r--gcc/cp/decl.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index a6a203706d5..122b0251ac7 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -14353,6 +14353,8 @@ lang_mark_tree (t)
ggc_mark_tree (ld->decl_flags.context);
if (TREE_CODE (t) != NAMESPACE_DECL)
ggc_mark_tree (ld->decl_flags.u.template_info);
+ else
+ mark_binding_level (&NAMESPACE_LEVEL (t));
if (CAN_HAVE_FULL_LANG_DECL_P (t))
{
ggc_mark_tree (ld->main_decl_variant);
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