lua_rawgeti segfault
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- Subject: lua_rawgeti segfault
- From: Artur Galyamov <artur-pub@...>
- Date: 2011年11月12日 15:56:46 +0400
Hi,
Reporting inconsistency lua_rawgeti() vs lua_getfield() when [t] is light userdata.
Also lua_rawseti().
$ lua -v
Lua 5.2.0 (beta) Copyright (C) 1994-2011 Lua.org, PUC-Rio
$ uname -a
Darwin iMac-Artur-Galamov.local 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504153~1/RELEASE_I386 i386
$ cc repr.c -llua
$ ./a.out
Segmentation fault
$ cc repr.c -llua -DUSE_PANIC
$ ./a.out
PANIC: unprotected error in call to Lua API (attempt to index a userdata value)
Abort trap
$
Lua compiled unchanged with "make macosx; sudo make install".
--- repr.c ---------------------------
#include <lua.h>
#include <lauxlib.h>
int
main(int argc, char *argv[])
{
lua_State *L;
L = luaL_newstate();
lua_pushlightuserdata(L, NULL);
#ifdef USE_PANIC
lua_getfield(L, -1, "field");
#else // USE_SEGFAULT
lua_rawseti(L, -1, 1);
#endif
fprintf(stderr, "not reached\n");
return 0;
}
--------------------------------------
-- Artur