# FMOD\_System\_CreateSound wav file with zeros in total chunk size causes crash **URL:** \ **Category:** FMOD Engine\ **Created:** [April 1, 2019, 3:12pm UTC](https://qa.fmod.com/t/fmod-system-createsound-wav-file-with-zeros-in-total-chunk-size-causes-crash/14514 "2019-04-01T15:12:08Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![MarcSpecter](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@MarcSpecter](https://qa.fmod.com/u/MarcSpecter)\ **Post date:** [April 1, 2019, 3:12pm UTC](https://qa.fmod.com/t/fmod-system-createsound-wav-file-with-zeros-in-total-chunk-size-causes-crash/14514/1 "2019-04-01T15:12:08Z")
Breakpoint below at line with \*\*\*\* at start. Thanks 0x10041f429 \<+69\>: callq 0x100422190 ; FMOD::SystemI::validate(FMOD::System\*, FMOD::SystemI\*\*, FMOD::SystemLockScope\*) 0x10041f42e \<+74\>: testl %eax, %eax 0x10041f430 \<+76\>: jne 0x10041f456 ; \<+114\> 0x10041f432 \<+78\>: movq -0x138(%rbp), %rdi 0x10041f439 \<+85\>: movq %r14, %rsi 0x10041f43c \<+88\>: movl %r15d, %edx 0x10041f43f \<+91\>: movq %r12, %rcx 0x10041f442 \<+94\>: movq -0x140(%rbp), %r8 0x10041f449 \<+101\>: callq 0x100427c9e ; \_\_\_lldb\_unnamed\_symbol1436$$libfmodL.dylib \*\*\*\* 0x10041f44e \<+106\>: testl %eax, %eax . \ ***signal SIBABRT** 0x10041f450 \<+108\>: je 0x10041f58d ; \<+425\> 0x10041f456 \<+114\>: movl %r15d, %r13d 0x10041f459 \<+117\>: movq %r12, -0x150(%rbp) 0x10041f460 \<+124\>: leaq 0x8eefe(%rip), %rsi ; “/Users/fmod/jenkins/workspace/Build\_\_1.10\_\_API\_Mac/lowlevel\_api/src/fmod\_system.cpp” 0x10041f467 \<+131\>: movl $0x3a4, %edx ; imm = 0x3A4 0x10041f46c \<+136\>: movl %eax, %edi 0x10041f46e \<+138\>: movl %eax, %r15d 0x10041f471 \<+141\>: callq 0x1003dabb2 ; \_\_\_lldb\_unnamed\_symbol572$$libfmodL.dylib ---
**Author:** ![MarcSpecter](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@MarcSpecter](https://qa.fmod.com/u/MarcSpecter)\ **Post date:** [April 2, 2019, 9:45am UTC](https://qa.fmod.com/t/fmod-system-createsound-wav-file-with-zeros-in-total-chunk-size-causes-crash/14514/2 "2019-04-02T09:45:15Z")
And this from FMOD memory logging (in [LOG] SystemI::createSoundInternal : Create name=‘xxxx.wav’ LOG] MemPool::alloc : 528 bytes (0x101868ab8) (alloc 351) [LOG] MemPool::alloc : 600 bytes (0x10186bf68) (alloc 352) [LOG] MemPool::free : 600 bytes (0x10186bf68) [LOG] MemPool::alloc : 432 bytes (0x1018407c8) (alloc 353) [ERR] CodecFSB5::readHeader : Header check failed. Not an FSB5 [LOG] MemPool::free : 432 bytes (0x1018407c8) [LOG] MemPool::alloc : 1312 bytes (0x102053e08) (alloc 354) [LOG] MemPool::free : -388396727 bytes (0x100403eab) and codec logging: [LOG] SystemI::createSoundInternal : 15 codecs found. Scan all until one succeeds [LOG] SystemI::createSoundInternal : Scan for tags. [LOG] CodecTag::openInternal : attempting to open ID3 or ASF tags… [LOG] Codec::release : [LOG] Codec::release : done [LOG] CodecWav::openInternal : attempting to open as WAV… [LOG] CodecWav::parseRIFF : chunk : id bext size 1114 [LOG] CodecWav::parseRIFF : offset = 1126 / 0 [LOG] Codec::release : [LOG] Codec::release : done [LOG] CodecFSB5::openInternal : attempting to open as FSB5… [ERR] CodecFSB5::readHeader : Header check failed. Not an FSB5 [LOG] Codec::release : [LOG] Codec::release : done [LOG] CodecOggVorbis::openInternal : attempting to open as OGG… [LOG] CodecWav::parseRIFF : chunk : id bext size 1114 [LOG] CodecWav::parseRIFF : offset = 1126 / 0 ---
**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\ **Post date:** [April 5, 2019, 3:48am UTC](https://qa.fmod.com/t/fmod-system-createsound-wav-file-with-zeros-in-total-chunk-size-causes-crash/14514/3 "2019-04-05T03:48:03Z")
Does this only occur with a specific file? If so are you able to send this to us: [support@fmod.com](mailto:support@fmod.com) ---
**Author:** ![MarcSpecter](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@MarcSpecter](https://qa.fmod.com/u/MarcSpecter)\ **Post date:** [April 5, 2019, 8:59am UTC](https://qa.fmod.com/t/fmod-system-createsound-wav-file-with-zeros-in-total-chunk-size-causes-crash/14514/4 "2019-04-05T08:59:59Z")
I think it happens with any wav file. Just zero out bytes 5,6,7 and 8. And try to open stream on it. Ive attached one, (Attachment BB0484\_A001-002B-\_010.WAV.zip is missing) ---
**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\ **Post date:** [April 8, 2019, 1:42am UTC](https://qa.fmod.com/t/fmod-system-createsound-wav-file-with-zeros-in-total-chunk-size-causes-crash/14514/5 "2019-04-08T01:42:55Z")
Thanks very much for the file. We can see how this 0 chunk length file can cause a problem and have fixed the reason for the crash for the next release. ---
**Author:** ![MarcSpecter](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@MarcSpecter](https://qa.fmod.com/u/MarcSpecter)\ **Post date:** [July 11, 2020, 1:02am UTC](https://qa.fmod.com/t/fmod-system-createsound-wav-file-with-zeros-in-total-chunk-size-causes-crash/14514/6 "2020-07-11T01:02:45Z")
Hello there. I just downloaded the latest FMOD libs with the claimed fix for this issue: “Core API - Fix crash trying to load corrupt WAV files with 0 length chunk size.” I am still getting 0 length chunk wav files crashing. NB: these files also have 0 length data chunks, but when I add an overall length value to the file, the lack of a data chunk size doesnt cause a crash. Thanks Marc ---
**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\ **Post date:** [July 13, 2020, 6:06am UTC](https://qa.fmod.com/t/fmod-system-createsound-wav-file-with-zeros-in-total-chunk-size-causes-crash/14514/7 "2020-07-13T06:06:04Z")
Zero length file should just return `fmod_err_plugin`, the crash must be caused by something else. Are you able to provide a repro or logs at all?