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-rw-r--r--main.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/main.c b/main.c
index 764d947..6e8ab7b 100644
--- a/main.c
+++ b/main.c
@@ -15,6 +15,9 @@
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
+#if RUBY_DEVEL && !defined RUBY_DEBUG_ENV
+# define RUBY_DEBUG_ENV 1
+#endif
#if defined RUBY_DEBUG_ENV && !RUBY_DEBUG_ENV
# undef RUBY_DEBUG_ENV
#endif