diff options
Diffstat (limited to 'src/vdbeaux.c')
| -rw-r--r-- | src/vdbeaux.c | 36 |
1 files changed, 32 insertions, 4 deletions
diff --git a/src/vdbeaux.c b/src/vdbeaux.c index 420365e..fe0dbd6 100644 --- a/src/vdbeaux.c +++ b/src/vdbeaux.c @@ -4060,6 +4060,23 @@ static void serialGet( pMem->flags = IsNaN(x) ? MEM_Null : MEM_Real; } } +static int serialGet7( + const unsigned char *buf, /* Buffer to deserialize from */ + Mem *pMem /* Memory cell to write value into */ +){ + u64 x = FOUR_BYTE_UINT(buf); + u32 y = FOUR_BYTE_UINT(buf+4); + x = (x<<32) + y; + assert( sizeof(x)==8 && sizeof(pMem->u.r)==8 ); + swapMixedEndianFloat(x); + memcpy(&pMem->u.r, &x, sizeof(x)); + if( IsNaN(x) ){ + pMem->flags = MEM_Null; + return 1; + } + pMem->flags = MEM_Real; + return 0; +} void sqlite3VdbeSerialGet( const unsigned char *buf, /* Buffer to deserialize from */ u32 serial_type, /* Serial type to deserialize */ @@ -4739,7 +4756,7 @@ int sqlite3VdbeRecordCompareWithSkip( }else if( serial_type==0 ){ rc = -1; }else if( serial_type==7 ){ - sqlite3VdbeSerialGet(&aKey1[d1], serial_type, &mem1); + serialGet7(&aKey1[d1], &mem1); rc = -sqlite3IntFloatCompare(pRhs->u.i, mem1.u.r); }else{ i64 lhs = vdbeRecordDecodeInt(serial_type, &aKey1[d1]); @@ -4764,14 +4781,18 @@ int sqlite3VdbeRecordCompareWithSkip( }else if( serial_type==0 ){ rc = -1; }else{ - sqlite3VdbeSerialGet(&aKey1[d1], serial_type, &mem1); if( serial_type==7 ){ - if( mem1.u.r<pRhs->u.r ){ + if( serialGet7(&aKey1[d1], &mem1) ){ + rc = -1; /* mem1 is a NaN */ + }else if( mem1.u.r<pRhs->u.r ){ rc = -1; }else if( mem1.u.r>pRhs->u.r ){ rc = +1; + }else{ + assert( rc==0 ); } }else{ + sqlite3VdbeSerialGet(&aKey1[d1], serial_type, &mem1); rc = sqlite3IntFloatCompare(mem1.u.i, pRhs->u.r); } } @@ -4841,7 +4862,14 @@ int sqlite3VdbeRecordCompareWithSkip( /* RHS is null */ else{ serial_type = aKey1[idx1]; - rc = (serial_type!=0 && serial_type!=10); + if( serial_type==0 + || serial_type==10 + || (serial_type==7 && serialGet7(&aKey1[d1], &mem1)!=0) + ){ + assert( rc==0 ); + }else{ + rc = 1; + } } if( rc!=0 ){ |