# Crash at FMOD\_Sound\_GetOpenState process **URL:** \ **Category:** FMOD Engine\ **Tags:** cpp\ **Created:** [October 30, 2020, 6:12am UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383 "2020-10-30T06:12:36Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![LemonTree](https://avatars.discourse-cdn.com/v4/letter/l/dbc845/32.png) [@LemonTree](https://qa.fmod.com/u/LemonTree)\ **Post date:** [October 30, 2020, 6:12am UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383/1 "2020-10-30T06:12:36Z")
my program used “FMOD\_NONBLOCKING” flag to create Sounds,Attach my program to gflags(WinDug) check memory error , But always detect failed at FMOD\_Sound\_GetOpenState Crash the program.My FMOD version : 31/01/18 1.10.03 - Studio API minor release (build 93157) ![CoreAndAddress](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/5/57f6e8102d2a47002c1c9a611c4ed0f4a95bc9a9.png) ![FmodLog](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/9/9c339dd5b6961de3304dbca55cea072a16397949.png) ---
**Author:** ![mathew](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/mathew/32/431_2.png) [@mathew](https://qa.fmod.com/u/mathew)\ **Post date:** [November 1, 2020, 11:12pm UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383/2 "2020-11-01T23:12:40Z")
Are you able to reproduce this crash by modifying one of our examples? ---
**Author:** ![LemonTree](https://avatars.discourse-cdn.com/v4/letter/l/dbc845/32.png) [@LemonTree](https://qa.fmod.com/u/LemonTree)\ **Post date:** [November 6, 2020, 11:28am UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383/3 "2020-11-06T11:28:25Z")
Thank your reply I unable to reproduce this crash by your examples, But I Encounter other Crash at Release Sound. My code as follows, it changes form the examples.( Core API Version 20013) [SoundReleaseCrash.txt](https://qa.fmod.com/uploads/short-url/riGbTYZW6L4ZP7ra1XUk7W8aVFo.txt) (5.6 KB) ---
**Author:** ![mathew](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/mathew/32/431_2.png) [@mathew](https://qa.fmod.com/u/mathew)\ **Post date:** [November 9, 2020, 4:33am UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383/4 "2020-11-09T04:33:26Z")
Thanks for providing your code, the key issue is when you perform a non-blocking createSound using a memory pointer, that memory needs to remain available to FMOD until the asynchronous operation is complete. ---
**Author:** ![LemonTree](https://avatars.discourse-cdn.com/v4/letter/l/dbc845/32.png) [@LemonTree](https://qa.fmod.com/u/LemonTree)\ **Post date:** [November 9, 2020, 9:07am UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383/5 "2020-11-09T09:07:02Z")
thank your reply I reproduce FMOD\_Sound\_GetOpenstate crash by your examples today, My code as follows, The must use gfalgs.exe attache the program code: [load\_from\_memory.txt](https://qa.fmod.com/uploads/short-url/bSJcQdH9YNSRs4GN3G4Y2g0liWe.txt) (3.8 KB) log: [log.txt](https://qa.fmod.com/uploads/short-url/yO5CumnLCauJvSJsecky2yPuJd4.txt) (41.9 KB) ---
**Author:** ![mathew](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/mathew/32/431_2.png) [@mathew](https://qa.fmod.com/u/mathew)\ **Post date:** [November 9, 2020, 11:19pm UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383/6 "2020-11-09T23:19:53Z")
Thanks for the example code, I can see the crash here too. Unfortunately there is no workaround for C, for C++, calling Sound::getOpenState without the percentbuffered / starving / diskbusy arguments should avoid it. We’ll aim to patch this for our release in ~1 month. Another possible workaround that just occurred to me that would be compatible with C is to use the FMOD\_CREATESOUNDEXINFO::nonblockcallback, when that callback fires it should be safe to call FMOD\_Sound\_GetOpenState. ---
**Author:** ![LemonTree](https://avatars.discourse-cdn.com/v4/letter/l/dbc845/32.png) [@LemonTree](https://qa.fmod.com/u/LemonTree)\ **Post date:** [November 10, 2020, 11:23am UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383/7 "2020-11-10T11:23:29Z")
my program will release in a late month, so I hope early to get your release lib, thank you so much. ---
**Author:** ![mathew](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/mathew/32/431_2.png) [@mathew](https://qa.fmod.com/u/mathew)\ **Post date:** [November 10, 2020, 9:50pm UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383/8 "2020-11-10T21:50:14Z")
If you have time pressure I strongly recommend using the nonblockcallback workaround in case there are delays in getting the fix out. ---
**Author:** ![LemonTree](https://avatars.discourse-cdn.com/v4/letter/l/dbc845/32.png) [@LemonTree](https://qa.fmod.com/u/LemonTree)\ **Post date:** [November 11, 2020, 12:30pm UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383/9 "2020-11-11T12:30:57Z")
I am now trying to use nonblockcallback workaround, I want to know if the crash has a big impact on the mobile platform? ---
**Author:** ![mathew](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/mathew/32/431_2.png) [@mathew](https://qa.fmod.com/u/mathew)\ **Post date:** [November 11, 2020, 10:09pm UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383/10 "2020-11-11T22:09:37Z")
> [@LemonTree](#): > > I want to know if the crash has a big impact on the mobile platform? I’m not sure I follow what you are asking? ---
**Author:** ![LemonTree](https://avatars.discourse-cdn.com/v4/letter/l/dbc845/32.png) [@LemonTree](https://qa.fmod.com/u/LemonTree)\ **Post date:** [November 16, 2020, 6:01am UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383/11 "2020-11-16T06:01:15Z")
thanks for your reply, I use nonblockcallback no reproduce this crash after. now I profile my program in mobile platform, discover FMOD Threads often steal CPU core because it has high priority. How make FMOD Threads to Normal priority? ---
**Author:** ![mathew](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/mathew/32/431_2.png) [@mathew](https://qa.fmod.com/u/mathew)\ **Post date:** [November 16, 2020, 10:01pm UTC](https://qa.fmod.com/t/crash-at-fmod-sound-getopenstate-process/16383/12 "2020-11-16T22:01:08Z")
FMOD thread priorities are set relative to each other to ensure all threads cooperate well together. If you are using FMOD 2.01 you can override this with [Thread\_SetAttributes](https://fmod.com/resources/documentation-api?version=2.1&page=core-api-common.html#thread_setattributes) however care should be taken to ensure FMOD works well with your changes. Previous versions of FMOD cannot override priority without modification to our source code.