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-rw-r--r--ext/ffi_c/FunctionInfo.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/ffi_c/FunctionInfo.c b/ext/ffi_c/FunctionInfo.c
index 7f77621..197c681 100644
--- a/ext/ffi_c/FunctionInfo.c
+++ b/ext/ffi_c/FunctionInfo.c
@@ -67,7 +67,7 @@ const rb_data_type_t rbffi_fntype_data_type = { /* extern */
.parent = &rbffi_type_data_type,
// IMPORTANT: WB_PROTECTED objects must only use the RB_OBJ_WRITE()
// macro to update VALUE references, as to trigger write barriers.
- .flags = RUBY_TYPED_FREE_IMMEDIATELY | RUBY_TYPED_WB_PROTECTED
+ .flags = RUBY_TYPED_FREE_IMMEDIATELY | RUBY_TYPED_WB_PROTECTED | FFI_RUBY_TYPED_FROZEN_SHAREABLE
};
VALUE rbffi_FunctionTypeClass = Qnil;