Segmentation fault when compiling

I'm getting a segmentation fault when compiling. I've tried my usual 
techniques to overcome the problem such as - waiting till the next day 
and/or complete refresh. All to no avail.

I've been compiling for several years without major incident. Last 
compiled successfully on July 6th 2018.

Have I missed something  that I should have done recently to cater for 
some change. I'm not aware of other people encountering this problem. 
Should I raise it as a bug?

Alex

> [build DEP] LNK:Library/libavmedialo.so
> [build LNK] Library/libavmedialo.so
> [build DEP] LNK:Library/libdbplo.so
> [build LNK] Library/libdbplo.so
> /bin/sh: line 1:  1727 Segmentation fault      ( 
> LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}"$I/program:$I/program":$W/UnpackedTarball/cppunit/src/cppunit/.libs 
> MALLOC_CHECK_=2 MALLOC_PERTURB_=153 
> $W/LinkTarget/Executable/cppunittester 
> $W/LinkTarget/CppunitTest/libtest_vcl_lifecycle.so --headless 
> "-env:BRAND_BASE_DIR=file://$S/instdir" 
> "-env:BRAND_SHARE_SUBDIR=share" 
> "-env:BRAND_SHARE_RESOURCE_SUBDIR=program/resource" 
> "-env:UserInstallation=file://$W/CppunitTest/vcl_lifecycle.test.user" 
> "-env:CONFIGURATION_LAYERS=xcsxcu:file://$I/share/registry 
> xcsxcu:file://$W/unittest/registry" 
> "-env:UNO_TYPES=file://$I/program/types.rdb 
> file://$I/program/types/offapi.rdb" 
> "-env:UNO_SERVICES=file://$W/Rdb/ure/services.rdb 
> file://$W/ComponentTarget/configmgr/source/configmgr.component 
> file://$W/ComponentTarget/i18npool/util/i18npool.component 
> file://$W/ComponentTarget/ucb/source/core/ucb1.component 
> file://$W/ComponentTarget/ucb/source/ucp/file/ucpfile1.component 
> file://$W/ComponentTarget/framework/u/bin/sh: line 1:  1713 
> Segmentation fault      ( 
> LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+$LD_LIBRARY_PATH:}"$I/program:$I/program":$W/UnpackedTarball/cppunit/src/cppunit/.libs 
> MALLOC_CHECK_=2 MALLOC_PERTURB_=153 
> $W/LinkTarget/Executable/cppunittester 
> $W/LinkTarget/CppunitTest/libtest_toolkit.so --headless 
> "-env:BRAND_BASE_DIR=file://$S/instdir" 
> "-env:BRAND_SHARE_SUBDIR=share" 
> "-env:BRAND_SHARE_RESOURCE_SUBDIR=program/resource" 
> "-env:UserInstallation=file://$W/CppunitTest/toolkit.test.user" 
> "-env:CONFIGURATION_LAYERS=xcsxcu:file://$I/share/registry 
> xcsxcu:file://$W/unittest/registry" 
> "-env:UNO_TYPES=file://$I/program/types/offapi.rdb 
> file://$I/program/types.rdb" 
> "-env:UNO_SERVICES=file://$W/Rdb/ure/services.rdb 
> file://$W/ComponentTarget/comphelper/util/comphelp.component 
> file://$W/ComponentTarget/configmgr/source/configmgr.component 
> file://$W/ComponentTarget/framework/util/fwk.component 
> file://$W/ComponentTarget/i18npool/util/i18npool.component 
> file://$W/ComponentTarget/sfx2/util/sfx.component 
> file://$W/ComponentTarget/toolkit/util/tk.component 
> file://$W/ComponentTarget/ucb/source/core/ucb1.component 
> file://$W/ComponentTarget/ucb/source/ucp/file/ucpfile1.component" 
> -env:URE_INTERNAL_LIB_DIR=file://$I/program 
> -env:LO_LIB_DIR=file://$I/program 
> -env:LO_JAVA_DIR=file://$I/program/classes --protector 
> $W/LinkTarget/Library/unoexceptionprotector.so unoexceptionprotector 
> --protector $W/LinkTarget/Library/unobootstrapprotector.so 
> unobootstrapprotector --protector 
> $W/LinkTarget/Library/libvclbootstrapprotector.so 
> vclbootstrapprotector 
> "-env:CPPUNITTESTTARGET=$W/CppunitTest/toolkit.test" ) > 
> $W/CppunitTest/toolkit.test.log 2>&1
> til/fwk.component file://$W/ComponentTarget/sfx2/util/sfx.component" 
> -env:URE_INTERNAL_LIB_DIR=file://$I/program 
> -env:LO_LIB_DIR=file://$I/program 
> -env:LO_JAVA_DIR=file://$I/program/classes --protector 
> $W/LinkTarget/Library/unoexceptionprotector.so unoexceptionprotector 
> --protector $W/LinkTarget/Library/unobootstrapprotector.so 
> unobootstrapprotector --protector 
> $W/LinkTarget/Library/libvclbootstrapprotector.so 
> vclbootstrapprotector 
> "-env:CPPUNITTESTTARGET=$W/CppunitTest/vcl_lifecycle.test" ) > 
> $W/CppunitTest/vcl_lifecycle.test.log 2>&1
> warn:vcl.opengl:1713:1713:vcl/opengl/x11/X11DeviceInfo.cxx:356: 
> unknown vendor => blocked
> Window position and size in pixel:
> X: 100
> Y: 100
> Width: 640
> Height: 480
> Window position:
> X: 2646 1/100mm
> Y: 2646 1/100mm
> Window size:
> Width: 16933 1/100mm
> Height: 12700 1/100mm
> Window size:
> Width: 1693 1/10mm
> Height: 1270 1/10mm
> Window size:
> Width: 640 pixel
> Height: 480 pixel
> Window size:
> Width: 332 appfont
> Height: 295 appfont
> Window size:
> Width: 332 sysfont
> Height: 295 sysfont
> Window size:
> Width: 169 mm
> Height: 127 mm
> Window size:
> Width: 17 cm
> Height: 13 cm
> Window size:
> Width: 6667 1/1000inch
> Height: 5000 1/1000inch
> Window size:
> Width: 667 1/100inch
> Height: 500 1/100inch
> Window size:
> Width: 67 1/10inch
> Height: 50 1/10inch
> Window size:
> Width: 7 inch
> Height: 5 inch
> Window size:
> Width: 480 point
> Height: 360 point
> Window size:
> Width: 9600 twip
> Height: 7200 twip
> Window size:
> Width: 640 pixel
> Height: 480 pixel
> (anonymous namespace)::ToolkitTest::testXUnitConversion finished in: 728ms
> OK (1)
> warn:fwk.desktop:1713:1713:framework/source/services/desktop.cxx:1069: 
> Desktop disposed before terminating it
>
> No core file identified in directory 
> /home/alex/master/workdir/CppunitTest/toolkit.test.core
> To show backtraces for crashes during test execution,
> enable core files with:
>
>    ulimit -c unlimited
>
> warn:vcl.window:1727:1727:vcl/source/window/window.cxx:946: 
> Window::Window(): pParent == NULL
> warn:vcl.window:1727:1727:vcl/source/window/window.cxx:946: 
> Window::Window(): pParent == NULL
> LifecycleTest::testCast finished in: 63ms
> LifecycleTest::testVirtualDevice finished in: 0ms
> LifecycleTest::testMultiDispose finished in: 3ms
> warn:vcl.window:1727:1727:vcl/source/window/window.cxx:946: 
> Window::Window(): pParent == NULL
> warn:vcl.window:1727:1727:vcl/source/window/window.cxx:946: 
> Window::Window(): pParent == NULL
> warn:vcl.window:1727:1727:vcl/source/window/window.cxx:946: 
> Window::Window(): pParent == NULL
> warn:vcl.window:1727:1727:vcl/source/window/window.cxx:946: 
> Window::Window(): pParent == NULL
> LifecycleTest::testIsolatedWidgets finished in: 1ms
> warn:vcl.opengl:1727:1727:vcl/opengl/x11/X11DeviceInfo.cxx:356: 
> unknown vendor => blocked
> LifecycleTest::testParentedWidgets finished in: 1ms
> LifecycleTest::testChildDispose finished in: 0ms
> LifecycleTest::testPostDispose finished in: 0ms
> LifecycleTest::testFocus finished in: 0ms
> LifecycleTest::testLeakage finished in: 409ms
> LifecycleTest::testToolkit finished in: 1ms
> OK (10)
> warn:fwk.desktop:1727:1727:framework/source/services/desktop.cxx:1069: 
> Desktop disposed before terminating it
>
> No core file identified in directory 
> /home/alex/master/workdir/CppunitTest/vcl_lifecycle.test.core
> To show backtraces for crashes during test execution,
> enable core files with:
>
>    ulimit -c unlimited
>
> [build DEP] LNK:Library/libgraphicfilterlo.so
> [build LNK] Library/libgraphicfilterlo.so
>
> Error: a unit test failed, please do one of:
>
> make CppunitTest_toolkit CPPUNITTRACE="gdb --args"
>     # for interactive debugging on Linux
> make CppunitTest_toolkit VALGRIND=memcheck
>     # for memory checking
> make CppunitTest_toolkit DEBUGCPPUNIT=TRUE
>     # for exception catching
>
> You can limit the execution to just one particular test by:
>
>
> Error: a unit test failed, please do one of:
>
> make CppunitTest_vcl_lifecycle CPPUNITTRACE="gdb --args"
>     # for interactive debugging on Linux
> make CppunitTest_vcl_lifecycle VALGRIND=memcheck
>     # for memory checking
> make CppunitTest_vcl_lifecycle DEBUGCPPUNIT=TRUE
>     # for exception catching
>
> You can limit the execution to just one particular test by:
>
> make CPPUNIT_TEST_NAME="testXYZ" ...above mentioned params...
>
> /home/alex/master/solenv/gbuild/CppunitTest.mk:116: recipe for target 
> '/home/alex/master/workdir/CppunitTest/toolkit.test' failed
> make[1]: *** [/home/alex/master/workdir/CppunitTest/toolkit.test] Error 1
> make[1]: *** Waiting for unfinished jobs....
> make CPPUNIT_TEST_NAME="testXYZ" ...above mentioned params...
>
> /home/alex/master/solenv/gbuild/CppunitTest.mk:116: recipe for target 
> '/home/alex/master/workdir/CppunitTest/vcl_lifecycle.test' failed
> make[1]: *** 
> [/home/alex/master/workdir/CppunitTest/vcl_lifecycle.test] Error 1
> make[1]: *** wait: No child processes.  Stop.
> Makefile:286: recipe for target 'build' failed
> make: *** [build] Error 2