[Bug tree-optimization/85579] New: [9 regression] SIGSEV in fortran test case gfortran.dg/pr51434.f90 starting with r259754

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85579

            Bug ID: 85579
           Summary: [9 regression] SIGSEV in fortran test case
                    gfortran.dg/pr51434.f90 starting with r259754
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
  Target Milestone: ---

Sorry, I don't know enough about fortran to know whether there is something
wrong with the test case.

seurer@makalu-lp1:~/gcc/build/gcc-test2$
/home/seurer/gcc/build/gcc-test2/gcc/testsuite/gfortran/../../gfortran
-B/home/seurer/gcc/build/gcc-test2/gcc/testsuite/gfortran/../../
-B/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgfortran/
/home/seurer/gcc/gcc-test2/gcc/testsuite/gfortran.dg/pr51434.f90
-fno-diagnostics-show-caret -fdiagnostics-color=never -O1 -pedantic-errors
-B/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libgfortran/.libs
-L/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libatomic/.libs
-B/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libquadmath/.libs
-L/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libquadmath/.libs
-L/home/seurer/gcc/build/gcc-test2/powerpc64-unknown-linux-gnu/./libquadmath/.libs
-lm -g3 -o ./pr51434.exe

seurer@makalu-lp1:~/gcc/build/gcc-test2$ gdb ./pr51434.exe 
(gdb) run
Starting program: /home/seurer/gcc/build/gcc-test2/./pr51434.exe 
Program received signal SIGSEGV, Segmentation fault.
0x0000000010000770 in bar () at
/home/seurer/gcc/gcc-test2/gcc/testsuite/gfortran.dg/pr51434.f90:18
18         if (any(c%t /= ['a', 'b', 'c', 'd', 'e'])) stop 2
Missing separate debuginfos, use: debuginfo-install
glibc-2.17-196.el7_4.2.ppc64 zlib-1.2.7-17.el7.ppc64
(gdb) where
#0  0x0000000010000770 in bar () at
/home/seurer/gcc/gcc-test2/gcc/testsuite/gfortran.dg/pr51434.f90:18
#1  main (argc=<optimized out>, argv=<optimized out>) at
/home/seurer/gcc/gcc-test2/gcc/testsuite/gfortran.dg/pr51434.f90:14
#2  0x00003fffb7a36bec in .generic_start_main.isra.0 () from /lib64/libc.so.6
#3  0x00003fffb7a36e14 in .__libc_start_main () from /lib64/libc.so.6
#4  0x0000000000000000 in ?? ()