[gfortran] Disable some tests that non-deterministically fail when testing in parallel

Several gfortran tests read/write/delete the same file. When running the test
suite in parallel, this results in non-deterministic failures since the tests
race on the file. This disables several tests that have such implicit race
conditions.

This should resolve the seemingly random failures of the buildbots.

Differential Revision: https://reviews.llvm.org/D149865

Author: tarunprabhu

Fortran/gfortran/regression/CMakeLists.txt

@@ -1845,6 +1845,41 @@ file(GLOB Failing CONFIGURE_DEPENDS
   # anyway so the test-suite passes by default on AArch64.
   entry_23.f
   findloc_8.f90
+
+  # These tests have race conditions with other tests that cause them to
+  # occasionally fail when run in parallel. Every test in each group listed
+  # below has a race condition with at least one other test in the group.
+
+  # <group> Tests read/write/replace/delete file named 'tmp.dat'
+  pr88169_1.f90
+  pr88169_2.f90
+  pr88169_3.f90
+  list_read_6.f90
+  # </group>
+
+  # <group>
+  write_rewind_1.f
+  write_rewind_2.f
+  # </group>
+
+  # <group> Tests read/delete/append file named 'foo'
+  append_1.f90
+  large_unit_2.f90
+  open_access_append_1.f90
+  open_status_1.f90
+  # </group>
+
+  # <group> Tests create/replace file named 'test.dat'
+  direct_io_12.f90
+  endfile.f90
+  eof_4.f90
+  implied_do_io_1.f90
+  list_read_7.f90
+  namelist_76.f90
+  read_eof_8.f90
+  read_eof_all.f90
+  streamio_18.f90
+  # </group>
 )
 
 list(APPEND UnsupportedTests "${Unsupported}")