3 files changed, 8 insertions, 1 deletions
diff --git a/include/mruby.h b/include/mruby.h
index 30c2dbbb1..4f404fb8e 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -374,6 +374,9 @@ mrb_value mrb_attr_get(mrb_state *mrb, mrb_value obj, mrb_sym id);
 mrb_bool mrb_respond_to(mrb_state *mrb, mrb_value obj, mrb_sym mid);
 mrb_bool mrb_obj_is_instance_of(mrb_state *mrb, mrb_value obj, struct RClass* c);
 
+/* fiber functions (you need to link mruby-fiber mrbgem to use) */
+mrb_value mrb_fiber_yield(mrb_state *mrb, int argc, mrb_value *argv);
+
 /* memory pool implementation */
 typedef struct mrb_pool mrb_pool;
 struct mrb_pool* mrb_pool_open(mrb_state*);
diff --git a/include/mruby/error.h b/include/mruby/error.h
index b04dc1082..96c4092b5 100644
--- a/include/mruby/error.h
+++ b/include/mruby/error.h
@@ -13,5 +13,8 @@ mrb_value mrb_make_exception(mrb_state *mrb, int argc, mrb_value *argv);
 mrb_value mrb_format(mrb_state *mrb, const char *format, ...);
 void mrb_exc_print(mrb_state *mrb, struct RObject *exc);
 void mrb_longjmp(mrb_state *mrb);
+void mrb_print_backtrace(mrb_state *mrb);
+mrb_value mrb_exc_backtrace(mrb_state *mrb, mrb_value exc);
+mrb_value mrb_get_backtrace(mrb_state *mrb);
 
 #endif  /* MRUBY_ERROR_H */
diff --git a/include/mruby/string.h b/include/mruby/string.h
index 675dadb5c..966f0bf77 100644
--- a/include/mruby/string.h
+++ b/include/mruby/string.h
@@ -53,7 +53,6 @@ char *mrb_string_value_ptr(mrb_state *mrb, mrb_value ptr);
 int mrb_str_offset(mrb_state *mrb, mrb_value str, int pos);
 mrb_value mrb_str_dup(mrb_state *mrb, mrb_value str);
 mrb_value mrb_str_intern(mrb_state *mrb, mrb_value self);
-mrb_value mrb_str_cat_cstr(mrb_state *, mrb_value, const char *);
 mrb_value mrb_str_to_inum(mrb_state *mrb, mrb_value str, int base, mrb_bool badcheck);
 double mrb_str_to_dbl(mrb_state *mrb, mrb_value str, mrb_bool badcheck);
 mrb_value mrb_str_to_str(mrb_state *mrb, mrb_value str);
@@ -63,6 +62,8 @@ mrb_value mrb_str_inspect(mrb_state *mrb, mrb_value str);
 mrb_bool mrb_str_equal(mrb_state *mrb, mrb_value str1, mrb_value str2);
 mrb_value mrb_str_dump(mrb_state *mrb, mrb_value str);
 mrb_value mrb_str_cat(mrb_state *mrb, mrb_value str, const char *ptr, size_t len);
+mrb_value mrb_str_cat_cstr(mrb_state *mrb, mrb_value str, const char *ptr);
+#define mrb_str_cat_lit(mrb, str, lit) mrb_str_cat(mrb, str, (lit), sizeof(lit) - 1)
 mrb_value mrb_str_append(mrb_state *mrb, mrb_value str, mrb_value str2);
 
 int mrb_str_cmp(mrb_state *mrb, mrb_value str1, mrb_value str2);