[PATCH 4/5] remove rb_str_modify workaround

[Eric Wong <e@80x24.org>]

Every supported Ruby implementation has a rb_str_modify
wrapper.
---
 ext/kcar/ext_help.h | 4 ----
 ext/kcar/extconf.rb | 1 -
 2 files changed, 5 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));
diff --git a/ext/kcar/extconf.rb b/ext/kcar/extconf.rb
index 3585125..7ab5b4b 100644
--- a/ext/kcar/extconf.rb
+++ b/ext/kcar/extconf.rb
@@ -5,7 +5,6 @@ dir_config("kcar")
 
 have_macro("SIZEOF_OFF_T", "ruby.h") or check_sizeof("off_t", "sys/types.h")
 have_macro("SIZEOF_LONG", "ruby.h") or check_sizeof("long", "sys/types.h")
-have_func("rb_str_modify", "ruby.h")
 
 # -fPIC is needed for Rubinius, MRI already uses it regardless
 with_cflags($CFLAGS + " -fPIC ") do
-- 
EW