Honestly I already expected for this kind of answer. I keep on debugging the
code using DUMA. Thanks alot for the swift response!
-------- Original-Nachricht --------
> Datum: Thu, 27 Oct 2011 10:42:37 +0000
> Von: "Black, Michael (IS)" <michael.bla...@ngc.com>
> An: General Discussion of SQLite Database <sqlite-users@sqlite.org>
> Betreff: Re: [sqlite] Segmentation Fault on SQLITE3_exex
> 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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