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-rw-r--r--ext/objspace/object_tracing.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/ext/objspace/object_tracing.c b/ext/objspace/object_tracing.c
index b8fa3edf4d2..24756234108 100644
--- a/ext/objspace/object_tracing.c
+++ b/ext/objspace/object_tracing.c
@@ -16,8 +16,7 @@
#include "ruby/ruby.h"
#include "ruby/debug.h"
#include "objspace.h"
-
-size_t rb_gc_count(void); /* from gc.c */
+#include "internal.h"
struct traceobj_arg {
int running;