From ef3c45d5230b08d87b53d67c04f34873c3d24933 Mon Sep 17 00:00:00 2001 From: Roberto Ierusalimschy Date: Fri, 27 Jun 1997 19:38:49 -0300 Subject: for security reasons, one cannot change the tag of a udata from Lua. --- manual.tex | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'manual.tex') diff --git a/manual.tex b/manual.tex index 62fb7fe5..747a3e82 100644 --- a/manual.tex +++ b/manual.tex @@ -1,4 +1,4 @@ -% $Id: manual.tex,v 2.6 1997/06/26 20:39:10 roberto Exp roberto $ +% $Id: manual.tex,v 2.7 1997/06/27 18:39:34 roberto Exp roberto $ \documentstyle[fullpage,11pt,bnf]{article} @@ -38,7 +38,7 @@ Waldemar Celes \tecgraf\ --- Computer Science Department --- PUC-Rio } -\date{\small \verb$Date: 1997/06/26 20:39:10 $} +\date{\small \verb$Date: 1997/06/27 18:39:34 $} \maketitle @@ -263,7 +263,7 @@ values of type userdata and table can have as many different tags as needed \see{tag-method}. Tags are created with the function \verb|newtag|, and the function \verb|tag| returns the tag of a given value. -To change the tag of a given userdata or table, +To change the tag of a given table, there is the function \verb|settag| \see{pdf-newtag}. @@ -1723,12 +1723,12 @@ This function allows Lua to test the tag of a value \see{TypesSec}. It receives one argument, and returns its tag (a number). \verb|tag| is equivalent to the API function \verb|lua_tag|. -\subsubsection*{\ff {\tt settag (o, tag)}}\Deffunc{settag} -This function sets the tag of a given object \see{TypesSec}. -The object \verb|o| must be a userdata or a table. +\subsubsection*{\ff {\tt settag (t, tag)}}\Deffunc{settag} +This function sets the tag of a given table \see{TypesSec}. \verb|tag| must be a value created with \verb|newtag| \see{pdf-newtag}. -\verb|settag| is equivalent to the API function \verb|lua_settag|. +For security reasons, +it is impossible to change the tag of a userdata from Lua. \subsubsection*{\ff {\tt assert (v)}}\Deffunc{assert} This function issues an {\em ``assertion failed!''} error -- cgit v1.2.3-55-g6feb