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Add comments and testcase() macros to the fix for shared-cache schema default

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value problem of check-in (6353). (CVS 6356)

FossilOrigin-Name: 05d8607d44cd3ff262c07cc1192f4471f3192b09
This commit is contained in:
drh
2009-03-18 10:36:12 +00:00
parent bd43455c38
commit 0bb1221eed
3 changed files with 20 additions and 9 deletions
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13
src/expr.c
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@@ -12,7 +12,7 @@
** This file contains routines used for analyzing expressions and
** for generating VDBE code that evaluates expressions in SQLite.
**
** $Id: expr.c,v 1.419 2009/03/17 17:49:00 danielk1977 Exp $
** $Id: expr.c,v 1.420 2009/03/18 10:36:13 drh Exp $
*/
#include "sqliteInt.h"
@@ -649,11 +649,22 @@ void sqlite3DequoteExpr(sqlite3 *db, Expr *p){
return;
}
ExprSetProperty(p, EP_Dequoted);
/* If p->token.dyn==0 and none of EP_Reduced, EP_TokenOnly, or
** EP_SpanOnly are set, that means that the p->token.z string points
** back to the original SQL statement text. In that case, we need
** to make a copy before modifying the string, otherwise we would
** corrupt the original SQL statement text.
*/
testcase( p->token.dyn==0 && ExprHasProperty(p, EP_Reduced) );
testcase( p->token.dyn==0 && ExprHasProperty(p, EP_TokenOnly) );
testcase( p->token.dyn==0 && ExprHasProperty(p, EP_SpanOnly) );
if( p->token.dyn==0
&& !ExprHasAnyProperty(p, EP_Reduced|EP_TokenOnly|EP_SpanOnly)
){
sqlite3TokenCopy(db, &p->token, &p->token);
}
sqlite3Dequote((char*)p->token.z);
}