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-rw-r--r--internal/gc.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/internal/gc.h b/internal/gc.h
index f0dc04fc58..7357bef732 100644
--- a/internal/gc.h
+++ b/internal/gc.h
@@ -351,4 +351,7 @@ ruby_sized_realloc_n(void *ptr, size_t new_count, size_t element_size, size_t ol
#define ruby_sized_xrealloc ruby_sized_xrealloc_inlined
#define ruby_sized_xrealloc2 ruby_sized_xrealloc2_inlined
#define ruby_sized_xfree ruby_sized_xfree_inlined
+
+void rb_gc_verify_shareable(VALUE);
+
#endif /* INTERNAL_GC_H */