[Bug other/81567] New: New test case 27_io/basic_fstream/53984.cc fails on powerpc64

["seurer at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81567

            Bug ID: 81567
           Summary: New test case 27_io/basic_fstream/53984.cc fails on
                    powerpc64
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
  Target Milestone: ---

This fails on powerpc64 both BE and LE.  It throws the assertion on line 29. 
Tested on a power8 system.

make -k check RUNTESTFLAGS=conformance.exp=27_io/basic_fstream/53984.cc
. . .
Running
/home/seurer/gcc/gcc-test/libstdc++-v3/testsuite/libstdc++-dg/conformance.exp
...
FAIL: 27_io/basic_fstream/53984.cc execution test

                === libstdc++ Summary ===

# of expected passes            1
# of unexpected failures        1



spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-test/./gcc/xg++ -shared-libgcc
-B/home/seurer/gcc/build/gcc-test/./gcc -nostdinc++
-L/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/libstdc++-v3/src
-L/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/libstdc++-v3/src/.libs
-L/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-B/home/seurer/gcc/install/gcc-test/powerpc64-unknown-linux-gnu/bin/
-B/home/seurer/gcc/install/gcc-test/powerpc64-unknown-linux-gnu/lib/ -isystem
/home/seurer/gcc/install/gcc-test/powerpc64-unknown-linux-gnu/include -isystem
/home/seurer/gcc/install/gcc-test/powerpc64-unknown-linux-gnu/sys-include
-B/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/./libstdc++-v3/src/.libs
-fmessage-length=0 -fno-show-column -ffunction-sections -fdata-sections -g -O2
-D_GNU_SOURCE -DLOCALEDIR="." -nostdinc++
-I/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/libstdc++-v3/include/powerpc64-unknown-linux-gnu
-I/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/libstdc++-v3/include
-I/home/seurer/gcc/gcc-test/libstdc++-v3/libsupc++
-I/home/seurer/gcc/gcc-test/libstdc++-v3/include/backward
-I/home/seurer/gcc/gcc-test/libstdc++-v3/testsuite/util
/home/seurer/gcc/gcc-test/libstdc++-v3/testsuite/27_io/basic_fstream/53984.cc
-include bits/stdc++.h -fno-diagnostics-show-caret -fdiagnostics-color=never
./libtestc++.a -Wl,--gc-sections
-L/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/libstdc++-v3/src/filesystem/.libs
-lm -o ./53984.exe
PASS: 27_io/basic_fstream/53984.cc (test for excess errors)
Setting LD_LIBRARY_PATH to
:/home/seurer/gcc/build/gcc-test/gcc:/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/./libstdc++-v3/../libgomp/.libs:/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/./libstdc++-v3/src/.libs:/home/seurer/gcc/build/gcc-test/gcc/32::/home/seurer/gcc/build/gcc-test/gcc:/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/./libstdc++-v3/../libgomp/.libs:/home/seurer/gcc/build/gcc-test/powerpc64-unknown-linux-gnu/./libstdc++-v3/src/.libs:/home/seurer/gcc/build/gcc-test/gcc/32:/home/seurer/gcc/install/gcc-6.3.0/lib64
spawn [open ...]
/home/seurer/gcc/gcc-test/libstdc++-v3/testsuite/27_io/basic_fstream/53984.cc:29:
void test01(): Assertion 'in.bad()' failed.
FAIL: 27_io/basic_fstream/53984.cc execution test