diff options
Diffstat (limited to 'lib/erl_interface/src/decode/decode_fun.c')
| -rw-r--r-- | lib/erl_interface/src/decode/decode_fun.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/lib/erl_interface/src/decode/decode_fun.c b/lib/erl_interface/src/decode/decode_fun.c index 3a7a2b01c1..db71007505 100644 --- a/lib/erl_interface/src/decode/decode_fun.c +++ b/lib/erl_interface/src/decode/decode_fun.c @@ -77,10 +77,12 @@ int ei_decode_fun(const char *buf, int *index, erlang_fun *p) } if (p != NULL) { p->u.closure.n_free_vars = n; - p->u.closure.free_var_len = ix - ix0; - p->u.closure.free_vars = ei_malloc(ix - ix0); - if (!(p->u.closure.free_vars)) return -1; - memcpy(p->u.closure.free_vars, s + ix0, ix - ix0); + p->u.closure.free_var_len = ix - ix0; + if (p->u.closure.free_var_len > 0) { + p->u.closure.free_vars = ei_malloc(p->u.closure.free_var_len); + if (!(p->u.closure.free_vars)) return -1; + memcpy(p->u.closure.free_vars, s + ix0, p->u.closure.free_var_len); + } } s += ix; *index += s-s0; @@ -146,6 +148,7 @@ int ei_decode_fun(const char *buf, int *index, erlang_fun *p) else { p_arity = NULL; } + ix = 0; if (ei_decode_atom_as(s, &ix, p_module, MAXATOMLEN_UTF8, ERLANG_UTF8, NULL, NULL) < 0) return -1; @@ -171,6 +174,8 @@ int ei_decode_fun(const char *buf, int *index, erlang_fun *p) } if (ei_decode_long(s, &ix, p_arity) < 0) return -1; + s += ix; + *index += s - s0; return 0; } default: |