TOPIC: build from source, segfaults

folkert@voga:~/Downloads/trunk/RELEASE$ ./polyphone
*** Error in `./polyphone': realloc(): invalid old size: 0x0000000000a9b380 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x6ef45)[0x7f3f93057f45]
/lib/x86_64-linux-gnu/libc.so.6(+0x746b6)[0x7f3f9305d6b6]
/lib/x86_64-linux-gnu/libc.so.6(+0x776c9)[0x7f3f930606c9]
/lib/x86_64-linux-gnu/libc.so.6(realloc+0x139)[0x7f3f93061b69]
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5(_ZN9QListData12realloc_growEi+0x55)[0x7f3f91df1ea5]
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5(_ZN9QListData6appendEi+0x4f)[0x7f3f91df1f3f]
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5(_Z21qRegisterResourceDataiPKhS0_S0_+0x325)[0x7f3f91eb3175]
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5(+0x7e363)[0x7f3f91d60363]
/lib64/ld-linux-x86-64.so.2(+0xf3fa)[0x7f3f96cac3fa]
/lib64/ld-linux-x86-64.so.2(+0xf50b)[0x7f3f96cac50b]
/lib64/ld-linux-x86-64.so.2(+0xcfa)[0x7f3f96c9dcfa]

and within valgrind:

==2751== Invalid free() / delete / delete[] / realloc()
==2751== at 0x4C2DDEF: realloc (vg_replace_malloc.c:785)
==2751== by 0x9A2AEA4: QListData::realloc_grow(int) (in /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.6.1)
==2751== by 0x9A2AF3E: QListData::append(int) (in /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.6.1)
==2751== by 0x9AEC174: qRegisterResourceData(int, unsigned char const*, unsigned char const*, unsigned char const*) (in /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.6.1)
==2751== by 0x9999362: ??? (in /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.6.1)
==2751== by 0x400F3F9: call_init.part.0 (dl-init.c:72)
==2751== by 0x400F50A: call_init (dl-init.c:30)
==2751== by 0x400F50A: _dl_init (dl-init.c:120)
==2751== by 0x4000CF9: ??? (in /lib/x86_64-linux-gnu/ld-2.23.so)
==2751== Address 0xa9b380 is 0 bytes inside data symbol "_ZN9QListData11shared_nullE"
==2751==
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
==2751==
==2751== Process terminating with default action of signal 6 (SIGABRT)
==2751== at 0x877E1C8: raise (raise.c:54)
==2751== by 0x877F649: abort (abort.c:89)
==2751== by 0x7F3F04C: __gnu_cxx::__verbose_terminate_handler() (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22)
==2751== by 0x7F3D015: ??? (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22)
==2751== by 0x7F3D060: std::terminate() (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22)
==2751== by 0x7F3D2C8: __cxa_rethrow (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22)
==2751== by 0x9AEC26E: qRegisterResourceData(int, unsigned char const*, unsigned char const*, unsigned char const*) (in /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.6.1)
==2751== by 0x9999362: ??? (in /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.6.1)
==2751== by 0x400F3F9: call_init.part.0 (dl-init.c:72)
==2751== by 0x400F50A: call_init (dl-init.c:30)
==2751== by 0x400F50A: _dl_init (dl-init.c:120)
==2751== by 0x4000CF9: ??? (in /lib/x86_64-linux-gnu/ld-2.23.so)

Hello,

Could you please provide me with additional information such as the version number of the sources, your operating system and what you did to trigger the bug?

Thanks for reporting,
Davy

debian 8 64bit, zip downloaded from the website on the day I reported it
and to trigger it; just start the program