topchetoeu/tal-runtime
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FFI: Fix various issues with C type table reallocations.

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This commit is contained in:
Mike Pall 2011-01-27 16:28:24 +01:00
parent 279b6ec22e
commit cd9b8f90e2
1 changed files with 13 additions and 9 deletions
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22
src/lj_cparse.c
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@ -821,6 +821,7 @@ static CTypeID cp_decl_intern(CPState *cp, CPDecl *decl)
} else if (ctype_isfunc(info)) { /* Intern function. */
CType *fct;
CTypeID fid;
CTypeID sib;
if (id) {
CType *refct = ctype_raw(cp->cts, id);
/* Reject function or refarray return types. */
@ -833,11 +834,12 @@ static CTypeID cp_decl_intern(CPState *cp, CPDecl *decl)
if (!ctype_isattrib(ctn->info)) break;
idx = ctn->next; /* Skip attribute. */
}
sib = ct->sib; /* Next line may reallocate the C type table. */
fid = lj_ctype_new(cp->cts, &fct);
csize = CTSIZE_INVALID;
fct->info = cinfo = info + id;
fct->size = ct->size;
fct->sib = ct->sib;
fct->size = size;
fct->sib = sib;
id = fid;
} else if (ctype_isattrib(info)) {
if (ctype_isxattrib(info, CTA_QUAL))
@ -932,23 +934,27 @@ static void cp_decl_reset(CPDecl *decl)
static CTypeID cp_decl_constinit(CPState *cp, CType **ctp, CTypeID typeid)
{
CType *ctt = ctype_get(cp->cts, typeid);
CTInfo info;
CTSize size;
CPValue k;
CTypeID constid;
while (ctype_isattrib(ctt->info)) { /* Skip attributes. */
typeid = ctype_cid(ctt->info); /* Update ID, too. */
ctt = ctype_get(cp->cts, typeid);
}
if (!ctype_isinteger(ctt->info) || !(ctt->info & CTF_CONST) || ctt->size > 4)
info = ctt->info;
size = ctt->size;
if (!ctype_isinteger(info) || !(info & CTF_CONST) || size > 4)
cp_err(cp, LJ_ERR_FFI_INVTYPE);
cp_check(cp, '=');
cp_expr_sub(cp, &k, 0);
constid = lj_ctype_new(cp->cts, ctp);
(*ctp)->info = CTINFO(CT_CONSTVAL, CTF_CONST|typeid);
k.u32 <<= 8*(4-ctt->size);
if ((ctt->info & CTF_UNSIGNED))
k.u32 >>= 8*(4-ctt->size);
k.u32 <<= 8*(4-size);
if ((info & CTF_UNSIGNED))
k.u32 >>= 8*(4-size);
else
k.u32 = (uint32_t)((int32_t)k.u32 >> 8*(4-ctt->size));
k.u32 = (uint32_t)((int32_t)k.u32 >> 8*(4-size));
(*ctp)->size = k.u32;
return constid;
}
@ -1307,7 +1313,6 @@ static CTypeID cp_decl_struct(CPState *cp, CPDecl *sdecl, CTInfo sinfo)
CPARSE_MODE_DIRECT|CPARSE_MODE_ABSTRACT|CPARSE_MODE_FIELD;
for (;;) {
CType *fct;
CTypeID typeid;
if (lastdecl) cp_err_token(cp, '}');
@ -1316,7 +1321,6 @@ static CTypeID cp_decl_struct(CPState *cp, CPDecl *sdecl, CTInfo sinfo)
decl.bits = CTSIZE_INVALID;
cp_declarator(cp, &decl);
typeid = cp_decl_intern(cp, &decl);
fct = ctype_raw(cp->cts, typeid);
if ((scl & CDF_STATIC)) { /* Static constant in struct namespace. */
CType *ct;