Remove `mrb_alloca()` function

When I found this function, I expected it to behave the same as the
`alloca(3)` function, but it is accually the `mrb_alloca()` function
does not free the heap until the `mrb_close()` function is called.

Also, even if it is deleted, it can be replaced with the combination
of the `MRB_TT_DATA` object and the `mrb_gv_set()` function if it is
sure necessary.

1 files changed, 0 insertions, 2 deletions

diff --git a/include/mruby.h b/include/mruby.h
index 20cdc1b83..5d5c759dd 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -228,7 +228,6 @@ typedef struct mrb_state {
   struct RClass *symbol_class;
   struct RClass *kernel_module;
 
-  struct alloca_header *mems;
   mrb_gc gc;
 
 #ifdef MRB_METHOD_CACHE
@@ -1247,7 +1246,6 @@ MRB_API void mrb_pool_close(struct mrb_pool*);
 MRB_API void* mrb_pool_alloc(struct mrb_pool*, size_t);
 MRB_API void* mrb_pool_realloc(struct mrb_pool*, void*, size_t oldlen, size_t newlen);
 MRB_API mrb_bool mrb_pool_can_realloc(struct mrb_pool*, void*, size_t);
-MRB_API void* mrb_alloca(mrb_state *mrb, size_t);
 
 MRB_API void mrb_state_atexit(mrb_state *mrb, mrb_atexit_func func);