diff options
Diffstat (limited to 'erts/emulator/beam/erl_nif.c')
| -rw-r--r-- | erts/emulator/beam/erl_nif.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c index b3f0b17ce4..529b602575 100644 --- a/erts/emulator/beam/erl_nif.c +++ b/erts/emulator/beam/erl_nif.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 2009-2010. All Rights Reserved. + * Copyright Ericsson AB 2009-2011. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in @@ -939,21 +939,26 @@ ERL_NIF_TERM enif_make_list_cell(ErlNifEnv* env, Eterm car, Eterm cdr) ERL_NIF_TERM enif_make_list(ErlNifEnv* env, unsigned cnt, ...) { - Eterm* hp = alloc_heap(env,cnt*2); - Eterm ret = make_list(hp); - Eterm* last = &ret; - va_list ap; - - va_start(ap,cnt); - while (cnt--) { - *last = make_list(hp); - *hp = va_arg(ap,Eterm); - last = ++hp; - ++hp; + if (cnt == 0) { + return NIL; + } + else { + Eterm* hp = alloc_heap(env,cnt*2); + Eterm ret = make_list(hp); + Eterm* last = &ret; + va_list ap; + + va_start(ap,cnt); + while (cnt--) { + *last = make_list(hp); + *hp = va_arg(ap,Eterm); + last = ++hp; + ++hp; + } + va_end(ap); + *last = NIL; + return ret; } - va_end(ap); - *last = NIL; - return ret; } ERL_NIF_TERM enif_make_list_from_array(ErlNifEnv* env, const ERL_NIF_TERM arr[], unsigned cnt) |