bug#8761: gnutls should use xmalloc not malloc

[Ted Zlatanov <tzz@lifelogs.com>]

On Mon, 30 May 2011 01:35:26 -0700 Paul Eggert <eggert@cs.ucla.edu> wrote: 

PE> Here's a proposed patch for the problem.
PE> * gnutls.c: Use Emacs's memory allocators.
PE> Without this change, the gnutls library would invoke malloc etc.
PE> directly, which causes problems on non-SYNC_INPUT hosts, and which
PE> runs afoul of improving memory_full behavior.
PE> (fn_gnutls_global_set_mem_functions): New macro or function pointer.
PE> (emacs_gnutls_global_init): Use it to specify xmalloc, xrealloc,
PE> xfree instead of the default malloc, realloc, free.
PE> (Fgnutls_boot): No need to check for memory allocation failure,
PE> since xmalloc does that for us.

This looks good.

PE> -      if (fn_gnutls_certificate_allocate_credentials (&x509_cred) < 0)
PE> -        memory_full ();
PE> +      fn_gnutls_certificate_allocate_credentials (&x509_cred);

PE> -      if (fn_gnutls_anon_allocate_client_credentials (&anon_cred) < 0)
PE> -        memory_full ();
PE> +      fn_gnutls_anon_allocate_client_credentials (&anon_cred);

I'm OK with the change, but how do I test that it behaves properly?

Ted