[PATCH, libffi, alpha]: Use FFI_ASSERT in ffi_closure_osf_inner

[Uros Bizjak]

Hello!

Attached patch fixes libgo reflect test failure with libffi closures.
The gccgo compiler started to use FFI closures recently; the compiler
passes ffi_type_void for structures with zero members.

ffi_call form src/alpha/ffi.c allows FFI_TYPE_VOID arguments in
non-debug mode through the default: case, but ffi_closure_osf_inner
aborts with this type of argument.

The patch changes the default case in ffi_closure_osf_inner from abort
to FFI_ASSERT, an this way synchronizes argument handling in both
cases.

2014-07-21  Uros Bizjak  <ubiz...@gmail.com>

    * src/alpha/ffi.c: Do not include stdlib.h.
    (ffi_closure_osf_inner) <default>: Use FFI_ASSERT instead of abort.

Patch was tested with libffi testsuite on alphaev6-linux-gnu.
Additionally, the patch fixed reflect test from the libgo testsuite
and go.test/test/recover.go test from the gcc testsuite.

Uros.

Index: src/alpha/ffi.c
===================================================================
--- src/alpha/ffi.c     (revision 212882)
+++ src/alpha/ffi.c     (working copy)
@@ -27,7 +27,6 @@
 
 #include <ffi.h>
 #include <ffi_common.h>
-#include <stdlib.h>
 
 /* Force FFI_TYPE_LONGDOUBLE to be different than FFI_TYPE_DOUBLE;
    all further uses in this file will refer to the 128-bit type.  */
@@ -273,7 +272,7 @@ ffi_closure_osf_inner(ffi_closure *closure, void *
          break;
 
        default:
-         abort ();
+         FFI_ASSERT (0);
        }
 
       argn += ALIGN(size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG;