[Bug libgomp/92844] New: [10 regression] libgomp.fortran/use_device_ptr-optional-2.f90 fails after r279004

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92844

            Bug ID: 92844
           Summary: [10 regression]
                    libgomp.fortran/use_device_ptr-optional-2.f90 fails
                    after r279004
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libgomp
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
                CC: jakub at gcc dot gnu.org
  Target Milestone: ---

Executing on host: /home/seurer/gcc/build/gcc-test/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test/gcc/
/home/seurer/gcc/gcc-test/libgomp/testsuite/libgomp.fortran/use_device_ptr-optional-2.f90
  -B/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/
-B/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/.libs
-I/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp
-I/home/seurer/gcc/gcc-test/libgomp/testsuite/../../include
-I/home/seurer/gcc/gcc-test/libgomp/testsuite/.. -fmessage-length=0
-fno-diagnostics-show-caret -Wno-hsa -fdiagnostics-color=never -fopenmp
-B/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/../libquadmath/.libs/
  -O  
-B/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/../libgfortran/.libs
-fintrinsic-modules-path=/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp
 
-L/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/.libs
-L/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/../libquadmath/.libs/
-L/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/../libgfortran/.libs
-lgfortran -foffload=-lgfortran -lquadmath -lm  -o
./use_device_ptr-optional-2.exe    (timeout = 300)
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-test/gcc/xgcc
-B/home/seurer/gcc/build/gcc-test/gcc/
/home/seurer/gcc/gcc-test/libgomp/testsuite/libgomp.fortran/use_device_ptr-optional-2.f90
-B/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/
-B/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/.libs
-I/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp
-I/home/seurer/gcc/gcc-test/libgomp/testsuite/../../include
-I/home/seurer/gcc/gcc-test/libgomp/testsuite/.. -fmessage-length=0
-fno-diagnostics-show-caret -Wno-hsa -fdiagnostics-color=never -fopenmp
-B/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/../libquadmath/.libs/
-O
-B/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/../libgfortran/.libs
-fintrinsic-modules-path=/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp
-L/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/.libs
-L/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/../libquadmath/.libs/
-L/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/../libgfortran/.libs
-lgfortran -foffload=-lgfortran -lquadmath -lm -o
./use_device_ptr-optional-2.exe
PASS: libgomp.fortran/use_device_ptr-optional-2.f90   -O  (test for excess
errors)
Setting LD_LIBRARY_PATH to
.:/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/.libs:/home/seurer/gcc/build/gcc-test/gcc:/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/../libgfortran/.libs:/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/../libquadmath/.libs:.:/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/.libs:/home/seurer/gcc/build/gcc-test/gcc:/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/../libgfortran/.libs:/home/seurer/gcc/build/gcc-test/powerpc64le-unknown-linux-gnu/./libgomp/../libquadmath/.libs:/home/seurer/gcc/build/gcc-test/./gmp/.libs:/home/seurer/gcc/build/gcc-test/./prev-gmp/.libs:/home/seurer/gcc/build/gcc-test/./mpfr/src/.libs:/home/seurer/gcc/build/gcc-test/./prev-mpfr/src/.libs:/home/seurer/gcc/build/gcc-test/./mpc/src/.libs:/home/seurer/gcc/build/gcc-test/./prev-mpc/src/.libs:/home/seurer/gcc/build/gcc-test/./isl/.libs:/home/seurer/gcc/build/gcc-test/./prev-isl/.libs:/home/seurer/gcc/install/gcc-7.4.0/lib64
Execution timeout is: 300
spawn [open ...]

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:
#0  0x3fffa38a04d7 in ???
#1  0x3fffa2ff38c8 in ???
FAIL: libgomp.fortran/use_device_ptr-optional-2.f90   -O  execution test
testcase
/home/seurer/gcc/gcc-test/libgomp/testsuite/libgomp.fortran/fortran.exp
completed in 0 seconds

Trying it in gdb (compiled without -O and with -g) I see:

(gdb) run
Starting program: /home/seurer/gcc/build/gcc-test/use_device_ptr-optional-2.exe 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/powerpc64le-linux-gnu/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x00000000100014ec in main (argc=<error reading variable: Cannot access memory
at address 0x20>, argv=<error reading variable: Cannot access memory at address
0x28>)
    at
/home/seurer/gcc/gcc-test/libgomp/testsuite/libgomp.fortran/use_device_ptr-optional-2.f90:6
6        call foo()
(gdb) where
#0  0x00000000100014ec in main (argc=<error reading variable: Cannot access
memory at address 0x20>, argv=<error reading variable: Cannot access memory at
address 0x28>)
    at
/home/seurer/gcc/gcc-test/libgomp/testsuite/libgomp.fortran/use_device_ptr-optional-2.f90:6
Backtrace stopped: Cannot access memory at address 0x50