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Overview
| Comment: | Fix an unreachable branch associated with stack overflow in the LEMON-generated parser. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
e3064ba3b68ca2a1c54561756e8c8988 |
| User & Date: | drh 2018-04-23 00:25:31 |
Context
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2018-04-23
| ||
| 13:28 | Ensure that there are no bind-parameters or incorrect schema references in the UPSERT portions of an INSERT within a TRIGGER. check-in: d47a6bdd user: drh tags: trunk | |
| 00:25 | Fix an unreachable branch associated with stack overflow in the LEMON-generated parser. check-in: e3064ba3 user: drh tags: trunk | |
|
2018-04-21
| ||
| 22:40 | Performance improvements on the main loop of the LEMON-generated parser. check-in: fec1ebad user: drh tags: trunk | |
Changes
Changes to tool/lempar.c.
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yypParser->yyhwm++;
assert( yypParser->yyhwm == (int)(yypParser->yytos - yypParser->yystack));
}
#endif
#if YYSTACKDEPTH>0
if( yypParser->yytos>=yypParser->yystackEnd ){
yyStackOverflow(yypParser);
return YY_ACCEPT_ACTION;
}
#else
if( yypParser->yytos>=&yypParser->yystack[yypParser->yystksz-1] ){
if( yyGrowStack(yypParser) ){
yyStackOverflow(yypParser);
return YY_ACCEPT_ACTION;
}
yymsp = yypParser->yytos;
}
#endif
}
switch( yyruleno ){
................................................................................
}else if( yyact <= YY_MAX_SHIFTREDUCE ){
yy_shift(yypParser,yyact,yymajor,yyminor);
#ifndef YYNOERRORRECOVERY
yypParser->yyerrcnt--;
#endif
break;
}else if( yyact==YY_ACCEPT_ACTION ){
/* YY_ACCEPT_ACTION also happens on a stack overflow. We distingush
** the two cases by observing that on a true accept, there should be
** a single token left on the stack, whereas on a stack overflow,
** the stack has been popped (by yyStackOverflow()) to be empty */
if( yypParser->yytos > yypParser->yystack ){
yypParser->yytos--;
yy_accept(yypParser);
}
return;
}else{
assert( yyact == YY_ERROR_ACTION );
yyminorunion.yy0 = yyminor;
#ifdef YYERRORSYMBOL
int yymx;
#endif
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yypParser->yyhwm++;
assert( yypParser->yyhwm == (int)(yypParser->yytos - yypParser->yystack));
}
#endif
#if YYSTACKDEPTH>0
if( yypParser->yytos>=yypParser->yystackEnd ){
yyStackOverflow(yypParser);
/* The call to yyStackOverflow() above pops the stack until it is
** empty, causing the main parser loop to exit. So the return value
** is never used and does not matter. */
return 0;
}
#else
if( yypParser->yytos>=&yypParser->yystack[yypParser->yystksz-1] ){
if( yyGrowStack(yypParser) ){
yyStackOverflow(yypParser);
/* The call to yyStackOverflow() above pops the stack until it is
** empty, causing the main parser loop to exit. So the return value
** is never used and does not matter. */
return 0;
}
yymsp = yypParser->yytos;
}
#endif
}
switch( yyruleno ){
................................................................................
}else if( yyact <= YY_MAX_SHIFTREDUCE ){
yy_shift(yypParser,yyact,yymajor,yyminor);
#ifndef YYNOERRORRECOVERY
yypParser->yyerrcnt--;
#endif
break;
}else if( yyact==YY_ACCEPT_ACTION ){
yypParser->yytos--;
yy_accept(yypParser);
return;
}else{
assert( yyact == YY_ERROR_ACTION );
yyminorunion.yy0 = yyminor;
#ifdef YYERRORSYMBOL
int yymx;
#endif
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