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Enhance SQLITE_TESTCTRL_LOCALTIME_FAULT so that is able to install an

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alternative localtime() interface so that the localtime logic an be better
tested.

FossilOrigin-Name: 6e25cb0890e8cdc63c9a21e841844d066267fc32ad143527843f7c8d05612b53
This commit is contained in:
drh
2022-02-10 21:26:53 +00:00
parent eadccaa926
commit d7e185ce5d
7 changed files with 49 additions and 19 deletions
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22
src/date.c
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@@ -503,8 +503,10 @@ static void clearYMD_HMS_TZ(DateTime *p){
** is available. This routine returns 0 on success and
** non-zero on any kind of error.
**
** If the sqlite3GlobalConfig.bLocaltimeFault variable is true then this
** routine will always fail.
** If the sqlite3GlobalConfig.bLocaltimeFault variable is non-zero then this
** routine will always fail. If bLocaltimeFault is nonzero and
** sqlite3GlobalConfig.xAltLocaltime is not NULL, then xAltLocaltime() is
** invoked in place of the OS-defined localtime() function.
**
** EVIDENCE-OF: R-62172-00036 In this implementation, the standard C
** library function localtime_r() is used to assist in the calculation of
@@ -520,7 +522,13 @@ static int osLocaltime(time_t *t, struct tm *pTm){
sqlite3_mutex_enter(mutex);
pX = localtime(t);
#ifndef SQLITE_UNTESTABLE
if( sqlite3GlobalConfig.bLocaltimeFault ) pX = 0;
if( sqlite3GlobalConfig.bLocaltimeFault ){
if( sqlite3GlobalConfig.xAltLocaltime!=0 ){
return sqlite3GlobalConfig.xAltLocaltime((const void*)t,(void*)pTm);
}else{
pX = 0;
}
}
#endif
if( pX ) *pTm = *pX;
#if SQLITE_THREADSAFE>0
@@ -529,7 +537,13 @@ static int osLocaltime(time_t *t, struct tm *pTm){
rc = pX==0;
#else
#ifndef SQLITE_UNTESTABLE
if( sqlite3GlobalConfig.bLocaltimeFault ) return 1;
if( sqlite3GlobalConfig.bLocaltimeFault ){
if( sqlite3GlobalConfig.xAltLocaltime!=0 ){
return sqlite3GlobalConfig.xAltLocaltime((const void*)t,(void*)pTm);
}else{
return 1;
}
}
#endif
#if HAVE_LOCALTIME_R
rc = localtime_r(t, pTm)==0;