This bug appears to have been reported against 'rawhide' during the Fedora 24 development cycle.
Changing version to '24'.

More information and reason for this action is here:
https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora24#Rawhide_Rebase

Same thing still happens in gcc@ppc64 for ages:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57591

Happens even during gcc build
from https://kojipkgs.fedoraproject.org//packages/gcc/7.1.1/3.fc26/data/logs/ppc64/build.log 

make[3]: Entering directory '/builddir/build/BUILD/gcc-7.1.1-20170622/obj-ppc64-redhat-linux/libbacktrace'
test3: [0]: NULL syminfo name
test3: [1]: NULL syminfo name
test3: [2]: NULL syminfo name
PASS: backtrace_full noinline
PASS: backtrace_full inline
FAIL: backtrace_simple noinline
PASS: backtrace_simple inline
PASS: backtrace_syminfo variable
FAIL: btest
PASS: stest
===================
1 of 2 tests failed
===================
make[3]: *** [Makefile:529: check-TESTS] Error 1
make[3]: Leaving directory '/builddir/build/BUILD/gcc-7.1.1-20170622/obj-ppc64-redhat-linux/libbacktrace'
make[2]: *** [Makefile:622: check-am] Error 2


for arm-none-eabi-gcc, I'm going to ignore result of this test for now, as gcc does, but it should get fixed in future, reassigning

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