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-rw-r--r--spec/rubyspec/optional/capi/ext/rubyspec.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/spec/rubyspec/optional/capi/ext/rubyspec.h b/spec/rubyspec/optional/capi/ext/rubyspec.h
index f20bdde37c..aa0f4def19 100644
--- a/spec/rubyspec/optional/capi/ext/rubyspec.h
+++ b/spec/rubyspec/optional/capi/ext/rubyspec.h
@@ -366,6 +366,7 @@
#define HAVE_RB_YIELD_VALUES 1
#define HAVE_RB_FUNCALL3 1
#define HAVE_RB_FUNCALL_WITH_BLOCK 1
+#define HAVE_RB_PROTECT 1
/* GC */
#define HAVE_RB_GC_REGISTER_ADDRESS 1