[Bug middle-end/81908] New: [8 Regression] FAIL: gfortran.dg/alloc_comp_auto_array_2.f90 -O3 -g -m32

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81908

            Bug ID: 81908
           Summary: [8 Regression] FAIL:
                    gfortran.dg/alloc_comp_auto_array_2.f90   -O3 -g -m32
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org
  Target Milestone: ---
            Target: i?86-*-*

spawn /home/abuild/rguenther/obj/gcc/testsuite/gfortran1/../../gfortran
-B/home/abuild/rguenther/obj/gcc/testsuite/gfortran1/../../
-B/home/abuild/rguenther/obj/x86_64-pc-linux-gnu/./libgfortran/
/space/rguenther/src/svn/trunk/gcc/testsuite/gfortran.dg/alloc_comp_auto_array_2.f90
-fno-diagnostics-show-caret -fdiagnostics-color=never -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions -pedantic-errors
-B/home/abuild/rguenther/obj/x86_64-pc-linux-gnu/32/libgfortran/.libs
-L/home/abuild/rguenther/obj/x86_64-pc-linux-gnu/32/libgfortran/.libs
-L/home/abuild/rguenther/obj/x86_64-pc-linux-gnu/32/libgfortran/.libs
-L/home/abuild/rguenther/obj/x86_64-pc-linux-gnu/32/libatomic/.libs
-B/home/abuild/rguenther/obj/x86_64-pc-linux-gnu/32/libquadmath/.libs
-L/home/abuild/rguenther/obj/x86_64-pc-linux-gnu/32/libquadmath/.libs
-L/home/abuild/rguenther/obj/x86_64-pc-linux-gnu/32/libquadmath/.libs -lm -m32
-o ./alloc_comp_auto_array_2.exe^M
/space/rguenther/src/svn/trunk/gcc/testsuite/gfortran.dg/alloc_comp_auto_array_2.f90:33:0:
Warning: '__builtin_memcpy' specified size between 2147483648 and 4294967295
exceeds maximum object size 2147483647 [-Wstringop-overflow=]^M
output is:

since

2017-08-17  Richard Biener  <rguenther@suse.de>

        * tree-vrp.c (vrp_int_const_binop): Do not set *overflow_p
        to true when overflow is undefined and we saturated the result.

or before -fstrict-overflow handling was removed from VRP.