Me thinkst you're corrupting your stack or memory.
I'd be willing to bet big money that this is your program causing this as there
are 1000's of people running that exact same call without any problem at all
(like me and I've been using it like crazy across multiple versions of SQLite)
If you can try using something like efence which may help detect it. I assume
you're on a Unix flavor?
Michael D. Black
Senior Scientist
Advanced Analytics Directorate
Advanced GEOINT Solutions Operating Unit
Northrop Grumman Information Systems
________________________________
From: sqlite-users-boun...@sqlite.org [sqlite-users-boun...@sqlite.org] on
behalf of Christian [siriu...@gmx.de]
Sent: Thursday, October 27, 2011 4:51 AM
To: sqlite-users@sqlite.org
Subject: EXT :[sqlite] Segmentation Fault on SQLITE3_exex
Hello everybody,
I'm facing a strange issue and believe that my setup is somehow wrong. From
time to time my program crashes with segfault when calling:
if (sqlite3_exec (db, "BEGIN TRANSACTION", 0, 0, 0) != SQLITE_OK)
{
//error
}
The stacktrace points to this function:
static void pthreadMutexEnter(sqlite3_mutex *p){
assert( p->id==SQLITE_MUTEX_RECURSIVE || pthreadMutexNotheld(p) );
#ifdef SQLITE_HOMEGROWN_RECURSIVE_MUTEX
{
pthread_t self = pthread_self();
if( p->nRef>0 && pthread_equal(p->owner, self) ){
p->nRef++;
}else{
pthread_mutex_lock(&p->mutex);
assert( p->nRef==0 );
p->owner = self;
p->nRef = 1;
}
}
#else
/* Use the built-in recursive mutexes if they are available.
*/
pthread_mutex_lock(&p->mutex); //!HERE IT GETS a SEGFAULT!
#if SQLITE_MUTEX_NREF
assert( p->nRef>0 || p->owner==0 );
p->owner = pthread_self();
p->nRef++;
#endif
}
Any ideas why this happens, or how I could workaround the issue? The query
works like 300 times and then suddenly crashes, I checked this with version
3.6.22 (as library) and the actual sources (3.7.8 _ 3007008).
Best regards,
Chris.
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