From: Nobuyoshi Nakada <nobu@...>
Date: 2010-06-29T20:44:46+09:00
Subject: [ruby-core:30955] Re: st.c: avoid 2 of 3 NULL-dereference bugs in sym-tab initialization

Hi,

At Tue, 29 Jun 2010 17:58:19 +0900,
Jim Meyering wrote in [ruby-core:30953]:
> Here is a patch to fix two NULL-dereference problems in st.c's
> st_init_table_with_size function.  Its malloc and calloc return
> values were not checked for NULL.
> 
> However, there is another problem not fixed by the patch below.
> The ADD_DIRECT macro calls "alloc" (aka malloc), and
> immediately dereferences the result.  A minimal patch
> would be to use xmalloc in place of alloc here, but
> I don't know if such semantics would be appropriate.

Those calls are substituted with ruby_xmalloc and ruby_xcalloc,
which never return NULL.

-- 
Nobu Nakada