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-rw-r--r--components/script/dom/bindings/utils.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/components/script/dom/bindings/utils.rs b/components/script/dom/bindings/utils.rs
index 87748da1ec4..7557f4a3fa8 100644
--- a/components/script/dom/bindings/utils.rs
+++ b/components/script/dom/bindings/utils.rs
@@ -637,3 +637,7 @@ impl AsCCharPtrPtr for [u8] {
self as *const [u8] as *const c_char
}
}
+
+pub unsafe fn callargs_is_constructing(args: &CallArgs) -> bool {
+ (*args.argv_.offset(-1)).is_magic()
+}