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-rw-r--r--gcc/calls.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/calls.cc b/gcc/calls.cc
index e16190c..2711c4e 100644
--- a/gcc/calls.cc
+++ b/gcc/calls.cc
@@ -2589,7 +2589,8 @@ can_implement_as_sibling_call_p (tree exp,
return false;
}
- if (TYPE_VOLATILE (TREE_TYPE (TREE_TYPE (addr))))
+ if (TYPE_VOLATILE (TREE_TYPE (TREE_TYPE (addr)))
+ && !CALL_EXPR_MUST_TAIL_CALL (exp))
{
maybe_complain_about_tail_call (exp, _("volatile function type"));
return false;