database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-24 08:21:29 +03:00
Code Activity

Disallow empty triggers. Ticket #3283. This does not present a backwards

Browse Source 
compatibility problem because prior to this change, an empty trigger would
segfault. (CVS 5550)

FossilOrigin-Name: 571adab9d2215fac6ed375257a070b8ffa9d9808
This commit is contained in:
drh
2008-08-11 14:26:35 +00:00
parent bc10377a40
commit 812389666c
3 changed files with 18 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/parse.y
View File

@@ -14,7 +14,7 @@
** the parser. Lemon will also generate a header file containing
** numeric codes for all of the tokens.
**
** @(#) $Id: parse.y,v 1.250 2008/08/08 15:06:22 drh Exp $
** @(#) $Id: parse.y,v 1.251 2008/08/11 14:26:35 drh Exp $
*/
// All token codes are small integers with #defines that begin with "TK_"
@@ -990,15 +990,24 @@ when_clause(A) ::= WHEN expr(X). { A = X; }
%type trigger_cmd_list {TriggerStep*}
%destructor trigger_cmd_list {sqlite3DeleteTriggerStep(pParse->db, $$);}
trigger_cmd_list(A) ::= trigger_cmd_list(Y) trigger_cmd(X) SEMI. {
/*
if( Y ){
Y->pLast->pNext = X;
}else{
Y = X;
}
*/
assert( Y!=0 );
Y->pLast->pNext = X;
Y->pLast = X;
A = Y;
}
trigger_cmd_list(A) ::= . { A = 0; }
trigger_cmd_list(A) ::= trigger_cmd(X) SEMI. {
/* if( X ) */
assert( X!=0 );
X->pLast = X;
A = X;
}
%type trigger_cmd {TriggerStep*}
%destructor trigger_cmd {sqlite3DeleteTriggerStep(pParse->db, $$);}