Package: tolua++5.1-dev Severity: normal If I declare a function in a *.pkg file like this:
void fun(lua_State *state, int numbers[42]);
then tolua++ generates the following stub for Lua to call:
/* function: fun */
#ifndef TOLUA_DISABLE_tolua_huh_fun00
static int tolua_huh_fun00(lua_State* tolua_S)
{
#ifndef TOLUA_RELEASE
tolua_Error tolua_err;
if (
!tolua_istable(tolua_S,1,0,&tolua_err) ||
!tolua_isnoobj(tolua_S,2,&tolua_err)
)
goto tolua_lerror;
else
#endif
{
lua_State* state = tolua_S;
int numbers[42];
{
#ifndef TOLUA_RELEASE
if (!tolua_isnumberarray(tolua_S,2,42,0,&tolua_err))
goto tolua_lerror;
else
#endif
{
int i;
for(i=0; i<42;i++)
numbers[i] = ((int) tolua_tofieldnumber(tolua_S,2,i+1,0));
}
}
{
fun(state,numbers);
}
{
int i;
for(i=0; i<42;i++)
tolua_pushfieldnumber(tolua_S,2,i+1,(lua_Number) numbers[i]);
}
}
return 0;
#ifndef TOLUA_RELEASE
tolua_lerror:
tolua_error(tolua_S,"#ferror in function 'fun'.",&tolua_err);
return 0;
#endif
}
#endif //#ifndef TOLUA_DISABLE
In th e tolua_isnumberarray, tolua_tofieldnumber, and
tolua_pushfieldnumber calls, the second argument is wrong.
It should be 1 rather than 2, because "numbers" is the first
parameter in the Lua stack, even though it is the second
parameter of the C++ function. Note that the generated code
has previously called tolua_istable(tolua_S,1,0,&tolua_err)
with the correct stack index.
If I move the lua_State * parameter to the end of the list,
then "numbers" is the first parameter in both Lua and C++,
and tolua++ generates correct code.
-- System Information:
Debian Release: 6.0
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=fi_FI.UTF-8, LC_CTYPE=fi_FI.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
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