DEF_EXT_LIB_BUILTIN (BUILT_IN_EXECVE, "execve", BT_FN_INT_CONST_STRING_PTR_CONST_STRING_PTR_CONST_STRING, ATTR_NOTHROW_LIST)
DEF_LIB_BUILTIN (BUILT_IN_EXIT, "exit", BT_FN_VOID_INT, ATTR_NORETURN_NOTHROW_LIST)
DEF_GCC_BUILTIN (BUILT_IN_EXPECT, "expect", BT_FN_LONG_LONG_LONG, ATTR_CONST_NOTHROW_LIST)
-DEF_GCC_BUILTIN (BUILT_IN_EXTEND_POINTER, "extend_pointer", BT_FN_WORD_PTR, ATTR_CONST_NOTHROW_LIST)
+DEF_GCC_BUILTIN (BUILT_IN_EXTEND_POINTER, "extend_pointer", BT_FN_UNWINDWORD_PTR, ATTR_CONST_NOTHROW_LIST)
DEF_GCC_BUILTIN (BUILT_IN_EXTRACT_RETURN_ADDR, "extract_return_addr", BT_FN_PTR_PTR, ATTR_NULL)
DEF_EXT_LIB_BUILTIN (BUILT_IN_FFS, "ffs", BT_FN_INT_INT, ATTR_CONST_NOTHROW_LIST)
DEF_EXT_LIB_BUILTIN (BUILT_IN_FFSIMAX, "ffsimax", BT_FN_INT_INTMAX, ATTR_CONST_NOTHROW_LIST)