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Overview
Comment:fix parser stack overflow (CVS 119)
Downloads: Tarball | ZIP archive
Timelines: family | ancestors | descendants | both | trunk
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SHA1: bffca90f37a69c5bd26b719a964408e0e518a7dc
User & Date: drh 2000-08-01 09:56:27.000
Context
2000-08-02
12:26
file format change (CVS 120) (check-in: 67f8af377c user: drh tags: trunk)
2000-08-01
09:56
fix parser stack overflow (CVS 119) (check-in: bffca90f37 user: drh tags: trunk)
2000-07-31
19:16
:-) (CVS 118) (check-in: 4132d4760f user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/parse.y.
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**
*************************************************************************
** This file contains SQLite's grammar for SQL.  Process this file
** using the lemon parser generator to generate C code that runs
** the parser.  Lemon will also generate a header file containing
** numeric codes for all of the tokens.
**
** @(#) $Id: parse.y,v 1.24 2000/07/29 13:06:59 drh Exp $
*/
%token_prefix TK_
%token_type {Token}
%extra_argument {Parse *pParse}
%syntax_error {
  sqliteSetString(&pParse->zErrMsg,"syntax error",0);
  pParse->sErrToken = TOKEN;








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**
*************************************************************************
** This file contains SQLite's grammar for SQL.  Process this file
** using the lemon parser generator to generate C code that runs
** the parser.  Lemon will also generate a header file containing
** numeric codes for all of the tokens.
**
** @(#) $Id: parse.y,v 1.25 2000/08/01 09:56:27 drh Exp $
*/
%token_prefix TK_
%token_type {Token}
%extra_argument {Parse *pParse}
%syntax_error {
  sqliteSetString(&pParse->zErrMsg,"syntax error",0);
  pParse->sErrToken = TOKEN;
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%type setlist {ExprList*}
%destructor setlist {sqliteExprListDelete($$);}

cmd ::= UPDATE id(X) SET setlist(Y) where_opt(Z).
    {sqliteUpdate(pParse,&X,Y,Z);}

setlist(A) ::= id(X) EQ expr(Y) COMMA setlist(Z).
    {A = sqliteExprListAppend(Z,Y,&X);}
setlist(A) ::= id(X) EQ expr(Y).   {A = sqliteExprListAppend(0,Y,&X);}

cmd ::= INSERT INTO id(X) inscollist_opt(F) VALUES LP itemlist(Y) RP.
               {sqliteInsert(pParse, &X, Y, 0, F);}
cmd ::= INSERT INTO id(X) inscollist_opt(F) select(S).
               {sqliteInsert(pParse, &X, 0, S, F);}








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%type setlist {ExprList*}
%destructor setlist {sqliteExprListDelete($$);}

cmd ::= UPDATE id(X) SET setlist(Y) where_opt(Z).
    {sqliteUpdate(pParse,&X,Y,Z);}

setlist(A) ::= setlist(Z) COMMA id(X) EQ expr(Y).
    {A = sqliteExprListAppend(Z,Y,&X);}
setlist(A) ::= id(X) EQ expr(Y).   {A = sqliteExprListAppend(0,Y,&X);}

cmd ::= INSERT INTO id(X) inscollist_opt(F) VALUES LP itemlist(Y) RP.
               {sqliteInsert(pParse, &X, Y, 0, F);}
cmd ::= INSERT INTO id(X) inscollist_opt(F) select(S).
               {sqliteInsert(pParse, &X, 0, S, F);}
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Changes to www/changes.tcl.
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}


proc chng {date desc} {
  puts "<DT><B>$date</B></DT>"
  puts "<DD><P><UL>$desc</UL></P></DD>"
}






chng {2000 July 31} {
<li>Finish the <a href="vdbe.html">VDBE tutorial</a>.</li>
<li>Added documentation on compiling to WindowsNT.</li>
<li>Fix a configuration program for WindowsNT.</li>
<li>Fix a configuration problem for HPUX.</li>
}








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>
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>
>








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}


proc chng {date desc} {
  puts "<DT><B>$date</B></DT>"
  puts "<DD><P><UL>$desc</UL></P></DD>"
}

chng {2000 Aug 1} {
<li>The parser's stack was overflowing on a very long UPDATE statement.
    This is now fixed.</li>
}

chng {2000 July 31} {
<li>Finish the <a href="vdbe.html">VDBE tutorial</a>.</li>
<li>Added documentation on compiling to WindowsNT.</li>
<li>Fix a configuration program for WindowsNT.</li>
<li>Fix a configuration problem for HPUX.</li>
}
︙︙
Changes to www/index.tcl. 
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#
# Run this TCL script to generate HTML for the index.html file.
#
set rcsid {$Id: index.tcl,v 1.21 2000/07/31 19:16:32 drh Exp $}

puts {<html>
<head><title>SQLite: An SQL Database Engine Built Atop GDBM</title></head>
<body bgcolor=white>
<h1 align=center>SQLite: An SQL Database Engine Built Atop
<a href="http://www.gnu.org/software/gdbm/gdbm.html">GDBM</a></h1>
<p align=center>}




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#
# Run this TCL script to generate HTML for the index.html file.
#
set rcsid {$Id: index.tcl,v 1.22 2000/08/01 09:56:27 drh Exp $}

puts {<html>
<head><title>SQLite: An SQL Database Engine Built Atop GDBM</title></head>
<body bgcolor=white>
<h1 align=center>SQLite: An SQL Database Engine Built Atop
<a href="http://www.gnu.org/software/gdbm/gdbm.html">GDBM</a></h1>
<p align=center>}
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<li>A <a href="http://dev.scriptics.com/">Tcl</a> interface is
included.</li>
<li>Command-line access program <a href="sqlite.html">sqlite</a> uses
the <a href="http://www.google.com/search?q=gnu+readline+library">GNU
Readline library</a></li>
<li>A Tcl-based test suite provides near 100% code coverage</li>
<li>7500+ lines of C code.  No external dependencies other than GDBM.</li>
<li>Built and tested under Linux, HPUX, and WinNT.
Should work under any Unix or Win95/98/2000.</li>
</ul>
</p>

<h2>Current Status</h2>

<p>A <a href="changes.html">change history</a> is available online.
There are currently no <em>known</em> bugs or memory leaks








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<li>A <a href="http://dev.scriptics.com/">Tcl</a> interface is
included.</li>
<li>Command-line access program <a href="sqlite.html">sqlite</a> uses
the <a href="http://www.google.com/search?q=gnu+readline+library">GNU
Readline library</a></li>
<li>A Tcl-based test suite provides near 100% code coverage</li>
<li>7500+ lines of C code.  No external dependencies other than GDBM.</li>
<li>Built and tested under Linux, HPUX, and WinNT.</li>

</ul>
</p>

<h2>Current Status</h2>

<p>A <a href="changes.html">change history</a> is available online.
There are currently no <em>known</em> bugs or memory leaks
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