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Remove an unreachable branch in the walIndexPage() logic.

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FossilOrigin-Name: 4e61a9731f5949dcf05c541106b56be16add04a7730613481fc8519d3e4f493b
This commit is contained in:
drh
2018-02-21 01:48:22 +00:00
parent 8d3e15eec4
commit c0ec2f7762
3 changed files with 21 additions and 22 deletions
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29
src/wal.c
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@@ -577,21 +577,20 @@ static SQLITE_NOINLINE int walIndexPageRealloc(
}
/* Request a pointer to the required page from the VFS */
if( pWal->apWiData[iPage]==0 ){
if( pWal->exclusiveMode==WAL_HEAPMEMORY_MODE ){
pWal->apWiData[iPage] = (u32 volatile *)sqlite3MallocZero(WALINDEX_PGSZ);
if( !pWal->apWiData[iPage] ) rc = SQLITE_NOMEM_BKPT;
}else{
rc = sqlite3OsShmMap(pWal->pDbFd, iPage, WALINDEX_PGSZ,
pWal->writeLock, (void volatile **)&pWal->apWiData[iPage]
);
assert( pWal->apWiData[iPage]!=0 || rc!=SQLITE_OK || pWal->writeLock==0 );
testcase( pWal->apWiData[iPage]==0 && rc==SQLITE_OK );
if( (rc&0xff)==SQLITE_READONLY ){
pWal->readOnly |= WAL_SHM_RDONLY;
if( rc==SQLITE_READONLY ){
rc = SQLITE_OK;
}
assert( pWal->apWiData[iPage]==0 );
if( pWal->exclusiveMode==WAL_HEAPMEMORY_MODE ){
pWal->apWiData[iPage] = (u32 volatile *)sqlite3MallocZero(WALINDEX_PGSZ);
if( !pWal->apWiData[iPage] ) rc = SQLITE_NOMEM_BKPT;
}else{
rc = sqlite3OsShmMap(pWal->pDbFd, iPage, WALINDEX_PGSZ,
pWal->writeLock, (void volatile **)&pWal->apWiData[iPage]
);
assert( pWal->apWiData[iPage]!=0 || rc!=SQLITE_OK || pWal->writeLock==0 );
testcase( pWal->apWiData[iPage]==0 && rc==SQLITE_OK );
if( (rc&0xff)==SQLITE_READONLY ){
pWal->readOnly |= WAL_SHM_RDONLY;
if( rc==SQLITE_READONLY ){
rc = SQLITE_OK;
}
}
}