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Overview
| Comment: | Avoid left-shifts of signed integers. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
0715ce164333e27671efbec8796f238d |
| User & Date: | drh 2016-05-03 00:04:55 |
Context
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2016-05-03
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| 14:57 | The session extension is disabled by default. To enable it using --enable-session on ./configure on unix and add SESSION=1 to the nmake on Windows. Or add -DSQLITE_ENABLE_SESSION and -DSQLITE_ENABLE_PREUPDATE_HOOK to build manually. check-in: bcaa650e user: drh tags: trunk | |
| 13:14 | Turn the session extension off by default. Enable using --enable-session on configure scripts, or using the SESSION=1 argument to nmake on Windows. Closed-Leaf check-in: e462cde2 user: drh tags: session-make | |
| 00:04 | Avoid left-shifts of signed integers. check-in: 0715ce16 user: drh tags: trunk | |
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2016-05-02
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| 19:05 | Remove some randomness from test script temptable2.test. check-in: 5830cf72 user: dan tags: trunk | |
Changes
Changes to ext/session/sqlite3session.c.
274 274 ** Read a varint value from aBuf[] into *piVal. Return the number of 275 275 ** bytes read. 276 276 */ 277 277 static int sessionVarintGet(u8 *aBuf, int *piVal){ 278 278 return getVarint32(aBuf, *piVal); 279 279 } 280 280 281 +/* Load an unaligned and unsigned 32-bit integer */ 282 +#define SESSION_UINT32(x) (((u32)(x)[0]<<24)|((x)[1]<<16)|((x)[2]<<8)|(x)[3]) 283 + 281 284 /* 282 285 ** Read a 64-bit big-endian integer value from buffer aRec[]. Return 283 286 ** the value read. 284 287 */ 285 288 static sqlite3_int64 sessionGetI64(u8 *aRec){ 286 - return (((sqlite3_int64)aRec[0]) << 56) 287 - + (((sqlite3_int64)aRec[1]) << 48) 288 - + (((sqlite3_int64)aRec[2]) << 40) 289 - + (((sqlite3_int64)aRec[3]) << 32) 290 - + (((sqlite3_int64)aRec[4]) << 24) 291 - + (((sqlite3_int64)aRec[5]) << 16) 292 - + (((sqlite3_int64)aRec[6]) << 8) 293 - + (((sqlite3_int64)aRec[7]) << 0); 289 + u64 x = SESSION_UINT32(aRec); 290 + u32 y = SESSION_UINT32(aRec+4); 291 + x = (x<<32) + y; 292 + return (sqlite3_int64)x; 294 293 } 295 294 296 295 /* 297 296 ** Write a 64-bit big-endian integer value to the buffer aBuf[]. 298 297 */ 299 298 static void sessionPutI64(u8 *aBuf, sqlite3_int64 i){ 300 299 aBuf[0] = (i>>56) & 0xFF;
Changes to src/test1.c.
6696 6696 int objc, 6697 6697 Tcl_Obj *CONST objv[] 6698 6698 ){ 6699 6699 const char *zSql1; 6700 6700 const char *zSql2; 6701 6701 int nStep; 6702 6702 int iStep; 6703 - int iCksum1 = 0; 6704 - int iCksum2 = 0; 6703 + unsigned int iCksum1 = 0; 6704 + unsigned int iCksum2 = 0; 6705 6705 int rc; 6706 6706 int iB; 6707 6707 sqlite3 *db; 6708 6708 sqlite3_stmt *pStmt; 6709 6709 6710 6710 if( objc!=5 ){ 6711 6711 Tcl_WrongNumArgs(interp, 1, objv, "DB SQL1 NSTEP SQL2"); ................................................................................ 6724 6724 for(iStep=0; iStep<nStep && SQLITE_ROW==sqlite3_step(pStmt); iStep++){ 6725 6725 int a = sqlite3_column_int(pStmt, 0); 6726 6726 if( a!=sqlite3_column_int(pStmt, iB) ){ 6727 6727 Tcl_AppendResult(interp, "data error: (a!=b)", 0); 6728 6728 return TCL_ERROR; 6729 6729 } 6730 6730 6731 - iCksum1 += (iCksum1 << 3) + a; 6731 + iCksum1 += (iCksum1 << 3) + (unsigned int)a; 6732 6732 } 6733 6733 rc = sqlite3_finalize(pStmt); 6734 6734 if( rc!=SQLITE_OK ) goto sql_error; 6735 6735 6736 6736 rc = sqlite3_prepare_v2(db, zSql2, -1, &pStmt, 0); 6737 6737 if( rc!=SQLITE_OK ) goto sql_error; 6738 6738 for(iStep=0; SQLITE_ROW==sqlite3_step(pStmt); iStep++){ 6739 6739 int a = sqlite3_column_int(pStmt, 0); 6740 - iCksum2 += (iCksum2 << 3) + a; 6740 + iCksum2 += (iCksum2 << 3) + (unsigned int)a; 6741 6741 } 6742 6742 rc = sqlite3_finalize(pStmt); 6743 6743 if( rc!=SQLITE_OK ) goto sql_error; 6744 6744 6745 6745 if( iCksum1!=iCksum2 ){ 6746 6746 Tcl_AppendResult(interp, "checksum mismatch", 0); 6747 6747 return TCL_ERROR;