Comment # 18 on bug 921577 from Michel Normand

Created attachment 650445 [details]
doxygen_1810_twppc64le_cpu_4_threads4_sr336660_patch_failure.log

to answer comment #16 and comment #17                                           
I did a build of doxygen-doc package using patch from sr336660
and did a trial while loop that ultimately failed same as before. 
doxygen_1810_twppc64le_cpu_4_threads4_sr336660_patch_failure.log attachment for
details                  
===
[michel@twppc64le:~/work/openSUSE:Factory:PowerPC/doxygen-doc]
$osc build              
...
$osc chroot              
... 
abuild@twppc64le:~/rpmbuild/BUILD/doxygen-1.8.10> ulimit -c unlimited
abuild@twppc64le:~/rpmbuild/BUILD/doxygen-1.8.10> cd
rpmbuild/BUILD/doxygen-1.8.10/
abuild@twppc64le:~/rpmbuild/BUILD/doxygen-1.8.10> idx=1; while test 1; do echo
"=== trial $idx"; rm -rf doxygen.tag doxygen_docs; ./build/bin/doxygen
>/dev/null || break; ((idx++)); done
...
*** Error in `./build/bin/doxygen': free(): invalid pointer: 0x000001002d262550
***                       
======= Backtrace: =========
/lib64/libc.so.6(+0x84b4c)[0x3fff89a54b4c]                      
/lib64/libc.so.6(+0x8d8f8)[0x3fff89a5d8f8]
/lib64/libc.so.6(cfree+0xd0)[0x3fff89a62c00]
/usr/lib64/libstdc++.so.6(_ZdlPv+0x18)[0x3fff89d5e238]
./build/bin/doxygen(_ZN6QGList9takeFirstEv+0x40)[0x44fc5610]
./build/bin/doxygen(_ZN14DotRunnerQueue7dequeueEv+0x64)[0x44efb3b4]
./build/bin/doxygen(_ZN15DotWorkerThread3runEv+0x68)[0x44efb478]
./build/bin/doxygen(_ZN14QThreadPrivate5startEPv+0xc4)[0x45008704]
/lib64/libpthread.so.0(+0x81cc)[0x3fff89eb81cc]
/lib64/libc.so.6(clone+0xe4)[0x3fff89ae2184]
===