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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 | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: | 98b3b97573ccb3d986d1552f97f96e15 |
| User & Date: | drh 2019-01-25 19:29:01 |
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: 13f6942e 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: 98b3b975 user: drh tags: trunk | |
| 18:17 | Fix harmless compiler warnings. check-in: 3ff220ad user: drh tags: trunk | |
Changes
Changes to src/vdbe.c.
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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 * * * |
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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 * * * |