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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/65107] New: FAIL: gfortran.dg/eof_4.f90, runtime error: File 'test.dat' already exists
Date: Wed, 18 Feb 2015 13:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65107

            Bug ID: 65107
           Summary: FAIL: gfortran.dg/eof_4.f90, runtime error: File
                    'test.dat' already exists
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: testsuite
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vries at gcc dot gnu.org

failure in gfortran.sum:
...
FAIL: gfortran.dg/eof_4.f90   -O0  execution test
FAIL: gfortran.dg/eof_4.f90   -O1  execution test
FAIL: gfortran.dg/eof_4.f90   -O2  execution test
FAIL: gfortran.dg/eof_4.f90   -O3 -fomit-frame-pointer  execution test
FAIL: gfortran.dg/eof_4.f90   -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions  execution test
FAIL: gfortran.dg/eof_4.f90   -O3 -fomit-frame-pointer -funroll-loops 
execution test
FAIL: gfortran.dg/eof_4.f90   -O3 -g  execution test
FAIL: gfortran.dg/eof_4.f90   -Os  execution test
...

In more detail:
...
At line 12 of file src/gcc/testsuite/gfortran.dg/eof_4.f90 (unit = 99)
Fortran runtime error: File 'test.dat' already exists
FAIL: gfortran.dg/eof_4.f90   -O0  execution test
...

Probably observed earlier here: PR64770 comment 0.

The nature of the failure is that the test expects test.dat not to exist, but
it does.

The test itself does not clean up after itself, so it's missing:
...
! { dg-final { remote_file build delete "test.dat" } }
...

But cleaning after itself does not guarantee that this failure is fixed. We
need to ensure that all tests that use test.dat clean up after themselves.