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Add a new OP_StackDepth opcode to help detect VDBE stack leaks early,

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before they cause damage.  For diagnostics in ticket #2832. (CVS 4612)

FossilOrigin-Name: 3fd6a267533cedcca9b8ba3533c107d7341a06c6
This commit is contained in:
drh
2007-12-12 12:00:45 +00:00
parent ae271d6a38
commit a99e881176
4 changed files with 35 additions and 11 deletions
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4
src/update.c
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@@ -12,7 +12,7 @@
** This file contains C code routines that are called by the parser
** to handle UPDATE statements.
**
** $Id: update.c,v 1.141 2007/11/11 18:36:34 drh Exp $
** $Id: update.c,v 1.142 2007/12/12 12:00:46 drh Exp $
*/
#include "sqliteInt.h"
@@ -330,6 +330,7 @@ void sqlite3Update(
/* The top of the update loop for when there are triggers.
*/
addr = sqlite3VdbeAddOp(v, OP_FifoRead, 0, 0);
sqlite3VdbeAddOp(v, OP_StackDepth, -1, 0);
mem1 = pParse->nMem++;
sqlite3VdbeAddOp(v, OP_MemStore, mem1, 0);
@@ -427,6 +428,7 @@ void sqlite3Update(
*/
if( !triggers_exist ){
addr = sqlite3VdbeAddOp(v, OP_FifoRead, 0, 0);
sqlite3VdbeAddOp(v, OP_StackDepth, -1, 0);
sqlite3VdbeAddOp(v, OP_Dup, 0, 0);
}
sqlite3VdbeAddOp(v, OP_NotExists, iCur, addr);