The following mutation does not seem to trigger any test failures for me (I tried running `make test` twice with this change):
```diff
Index: src/vdbe.c
==================================================================
--- src/vdbe.c
+++ src/vdbe.c
@@ -701,11 +701,10 @@
** sqlite3_column_text16() failed. */
goto no_mem;
}
assert( p->rc==SQLITE_OK || (p->rc&0xff)==SQLITE_BUSY );
testcase( p->rc!=SQLITE_OK );
- p->rc = SQLITE_OK;
assert( p->bIsReader || p->readOnly!=0 );
p->iCurrentTime = 0;
assert( p->explain==0 );
p->pResultSet = 0;
db->busyHandler.nBusy = 0;
```
The test program in the ticket does seem to reproduce the issue with the above mutation.