Index: libffi/src/m68k/ffi.c
===================================================================
--- libffi.orig/src/m68k/ffi.c
+++ libffi/src/m68k/ffi.c
@@ -261,7 +261,8 @@ ffi_prep_closure_loc (ffi_closure* closu
 		      void *user_data,
 		      void *codeloc)
 {
-  FFI_ASSERT (cif->abi == FFI_SYSV);
+  if (cif->abi != FFI_SYSV)
+    return FFI_BAD_ABI;
 
   *(unsigned short *)closure->tramp = 0x207c;
   *(void **)(closure->tramp + 2) = codeloc;
Index: libffi/testsuite/libffi.call/return_sc.c
===================================================================
--- libffi.orig/testsuite/libffi.call/return_sc.c
+++ libffi/testsuite/libffi.call/return_sc.c
@@ -30,7 +30,7 @@ int main (void)
        sc < (signed char) 127; sc++)
     {
       ffi_call(&cif, FFI_FN(return_sc), &rint, values);
-      CHECK(rint == (ffi_arg) sc);
+      CHECK((signed char)rint == sc);
     }
   exit(0);
 }