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Overview
| Comment: | Reinitialize debugging information on registers of a trigger prior to each invocation of the trigger. This prevents false-positives from the sqlite3VdbeMemAboutToChange() test logic. |
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| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
98b3b97573ccb3d986d1552f97f96e15 |
| User & Date: | drh 2019-01-25 19:29:01.388 |
Context
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2019-01-25
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| 20:09 | Do not accidently truncate zeroblob values when doing an arithmetic operation. Fix for ticket [bb4bdb9f7f654b0bb9f34cfba]. (check-in: 13f6942eb0 user: drh tags: trunk) | |
| 19:29 | Reinitialize debugging information on registers of a trigger prior to each invocation of the trigger. This prevents false-positives from the sqlite3VdbeMemAboutToChange() test logic. (check-in: 98b3b97573 user: drh tags: trunk) | |
| 18:17 | Fix harmless compiler warnings. (check-in: 3ff220ad37 user: drh tags: trunk) | |
Changes
Changes to src/vdbe.c.
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6167 6168 6169 6170 6171 6172 6173 6174 6175 6176 6177 6178 6179 6180 | p->apCsr = (VdbeCursor **)&aMem[p->nMem]; pFrame->aOnce = (u8*)&p->apCsr[pProgram->nCsr]; memset(pFrame->aOnce, 0, (pProgram->nOp + 7)/8); p->aOp = aOp = pProgram->aOp; p->nOp = pProgram->nOp; #ifdef SQLITE_ENABLE_STMT_SCANSTATUS p->anExec = 0; #endif pOp = &aOp[-1]; break; } /* Opcode: Param P1 P2 * * * | > > > > > > > > > > > | 6167 6168 6169 6170 6171 6172 6173 6174 6175 6176 6177 6178 6179 6180 6181 6182 6183 6184 6185 6186 6187 6188 6189 6190 6191 |
p->apCsr = (VdbeCursor **)&aMem[p->nMem];
pFrame->aOnce = (u8*)&p->apCsr[pProgram->nCsr];
memset(pFrame->aOnce, 0, (pProgram->nOp + 7)/8);
p->aOp = aOp = pProgram->aOp;
p->nOp = pProgram->nOp;
#ifdef SQLITE_ENABLE_STMT_SCANSTATUS
p->anExec = 0;
#endif
#ifdef SQLITE_DEBUG
/* Verify that second and subsequent executions of the same trigger do not
** try to reuse register values from the first use. */
{
int i;
for(i=0; i<p->nMem; i++){
aMem[i].pScopyFrom = 0; /* Prevent false-positive AboutToChange() errs */
aMem[i].flags |= MEM_Undefined; /* Cause a fault if this reg is reused */
}
}
#endif
pOp = &aOp[-1];
break;
}
/* Opcode: Param P1 P2 * * *
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