FFI: Simplify initializer rules. Clarify docs.

3 files changed, 4 insertions, 10 deletions

diff --git a/src/lj_cconv.c b/src/lj_cconv.c
index ac6374ed..d4578f88 100644
--- a/src/lj_cconv.c
+++ b/src/lj_cconv.c
@@ -679,17 +679,12 @@ static void cconv_struct_init(CTState *cts, CType *d, CTSize sz, uint8_t *dp,
 ** This is true if an aggregate is to be initialized with a value.
 ** Valarrays are treated as values here so ct_tv handles (V|C, I|F).
 */
-int lj_cconv_multi_init(CTState *cts, CType *d, TValue *o)
+int lj_cconv_multi_init(CType *d, TValue *o)
 {
   if (!(ctype_isrefarray(d->info) || ctype_isstruct(d->info)))
     return 0;  /* Destination is not an aggregate. */
   if (tvistab(o) || (tvisstr(o) && !ctype_isstruct(d->info)))
     return 0;  /* Initializer is not a value. */
-  if (tviscdata(o)) {
-    CTInfo info = lj_ctype_rawref(cts, cdataV(o)->typeid)->info;
-    if (ctype_isrefarray(info) || ctype_isstruct(info))
-      return 0;  /* Initializer is not a value. */
-  }
   return 1;  /* Otherwise the initializer is a value. */
 }
 
@@ -699,7 +694,7 @@ void lj_cconv_ct_init(CTState *cts, CType *d, CTSize sz,
 {
   if (len == 0)
     memset(dp, 0, sz);
-  else if (len == 1 && !lj_cconv_multi_init(cts, d, o))
+  else if (len == 1 && !lj_cconv_multi_init(d, o))
     lj_cconv_ct_tv(cts, d, dp, o, 0);
   else if (ctype_isarray(d->info))  /* Also handles valarray init with len>1. */
     cconv_array_init(cts, d, sz, dp, o, len);
diff --git a/src/lj_cconv.h b/src/lj_cconv.h
index acc09af9..494f9d4e 100644
--- a/src/lj_cconv.h
+++ b/src/lj_cconv.h
@@ -58,7 +58,7 @@ LJ_FUNC int lj_cconv_tv_bf(CTState *cts, CType *s, TValue *o, uint8_t *sp);
 LJ_FUNC void lj_cconv_ct_tv(CTState *cts, CType *d,
                             uint8_t *dp, TValue *o, CTInfo flags);
 LJ_FUNC void lj_cconv_bf_tv(CTState *cts, CType *d, uint8_t *dp, TValue *o);
-LJ_FUNC int lj_cconv_multi_init(CTState *cts, CType *d, TValue *o);
+LJ_FUNC int lj_cconv_multi_init(CType *d, TValue *o);
 LJ_FUNC void lj_cconv_ct_init(CTState *cts, CType *d, CTSize sz,
                               uint8_t *dp, TValue *o, MSize len);
 
diff --git a/src/lj_crecord.c b/src/lj_crecord.c
index c6577975..681c5029 100644
--- a/src/lj_crecord.c
+++ b/src/lj_crecord.c
@@ -566,8 +566,7 @@ static void crec_alloc(jit_State *J, RecordFFData *rd, CTypeID id)
     CType *d = ctype_raw(cts, id);
     TRef trcd = emitir(IRTG(IR_CNEW, IRT_CDATA), trid, TREF_NIL);
     J->base[0] = trcd;
-    if (J->base[1] && !J->base[2] &&
-        !lj_cconv_multi_init(cts, d, &rd->argv[1])) {
+    if (J->base[1] && !J->base[2] && !lj_cconv_multi_init(d, &rd->argv[1])) {
       goto single_init;
     } else if (ctype_isarray(d->info)) {
       CType *dc = ctype_rawchild(cts, d);  /* Array element type. */