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-rw-r--r--ext/kcar/ext_help.h4
1 files changed, 0 insertions, 4 deletions
diff --git a/ext/kcar/ext_help.h b/ext/kcar/ext_help.h
index d227737..a0e21e2 100644
--- a/ext/kcar/ext_help.h
+++ b/ext/kcar/ext_help.h
@@ -16,10 +16,6 @@
 #  endif
 #endif /* ! defined(OFFT2NUM) */
 
-#ifndef HAVE_RB_STR_MODIFY
-#  define rb_str_modify(x) do {} while (0)
-#endif /* ! defined(HAVE_RB_STR_MODIFY) */
-
 static inline int str_cstr_eq(VALUE val, const char *ptr, long len)
 {
   return (RSTRING_LEN(val) == len && !memcmp(ptr, RSTRING_PTR(val), len));