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Use a new algorithm for sqlite3Strlen that is slightly slower but is more

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like to work on a mixture of 32- and 64-bit systems.  Ticket #3237, #3248. (CVS 5471)

FossilOrigin-Name: cb1876d8dc102be74be98dd57ac14ee67be8e8e2
This commit is contained in:
drh 2008-07-24 17:06:48 +00:00
parent 7ce72f6950
commit 513c331df9
3 changed files with 14 additions and 10 deletions
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12
manifest
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C Update\sthe\simplementation\sof\ssqlite3ResultSetOfSelect()\sto\s(hopefully)\smake\nit\sclearer\sthat\smalloc\sfailures\scannot\spossibly\sresult\sin\sa\scrash.\nTicket\s#3247.\s(CVS\s5470)
D 2008-07-24T15:50:41
C Use\sa\snew\salgorithm\sfor\ssqlite3Strlen\sthat\sis\sslightly\sslower\sbut\sis\smore\nlike\sto\swork\son\sa\smixture\sof\s32-\sand\s64-bit\ssystems.\s\sTicket\s#3237,\s#3248.\s(CVS\s5471)
D 2008-07-24T17:06:48
F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
F Makefile.in 77ff156061bb870aa0a8b3d545c670d08070f7e6
F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@ -181,7 +181,7 @@ F src/tokenize.c b5fdc79fb7e00077b9c02af7a0da3b89c9f3398e
F src/trigger.c bdb56bb9db1a7b18f8505484051221ab5123f21d
F src/update.c 4e698fcc0c91c241a960304c4236dc3a49603155
F src/utf.c 8d52f620a7153d90b058502124fe51d821fcdf57
F src/util.c f94d11f931775e325b1a9f97b5cd3005bc4328ba
F src/util.c 06c5476b440f141987e5d829efd25900df72f629
F src/vacuum.c ef342828002debc97514617af3424aea8ef8522c
F src/vdbe.c cc4c19b88d63fa963a4b9260bcae04b82fb59fbb
F src/vdbe.h c46155c221418bea29ee3a749d5950fcf85a70e2
@ -612,7 +612,7 @@ F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
F tool/speedtest8.c 1dbced29de5f59ba2ebf877edcadf171540374d1
F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
P e0a101117ca44f0cce555b5db667286729fd2ad4
R 36f01beb529c949c7be18da5beb3dc1a
P 7455310931787ddc72d677ba6c471b67af9418a8
R 2dc3c49d1cf459d9463d2096757fe3cd
U drh
Z 17b4c03daebd767a4ef2a00afd17ccd3
Z 6ffb5de8a8a5e4cc894ca126c9cfb890

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7455310931787ddc72d677ba6c471b67af9418a8
cb1876d8dc102be74be98dd57ac14ee67be8e8e2

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src/util.c
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@ -14,7 +14,7 @@
** This file contains functions for allocating memory, comparing
** strings, and stuff like that.
**
** $Id: util.c,v 1.239 2008/07/22 05:15:53 shane Exp $
** $Id: util.c,v 1.240 2008/07/24 17:06:48 drh Exp $
*/
#include "sqliteInt.h"
#include <stdarg.h>
@ -56,11 +56,15 @@ int sqlite3IsNaN(double x){
*/
int sqlite3Strlen(sqlite3 *db, const char *z){
const char *z2 = z;
int len;
size_t x;
while( *z2 ){ z2++; }
if( z2 > &z[db->aLimit[SQLITE_LIMIT_LENGTH]] ){
x = z2 - z;
len = 0x7fffffff & x;
if( len!=x || len > db->aLimit[SQLITE_LIMIT_LENGTH] ){
return db->aLimit[SQLITE_LIMIT_LENGTH];
}else{
return (int)(z2 - z);
return len;
}
}