[Bug ada/84277] New: [8 Regression] A lot of new acats testsuite failures

[rainer@emrich-ebersheim.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84277

            Bug ID: 84277
           Summary: [8 Regression] A lot of new acats testsuite failures
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rainer@emrich-ebersheim.de
  Target Milestone: ---

I get a lot of new acats testsuite failures compared to 7.3.0, see
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg00439.html and
https://gcc.gnu.org/ml/gcc-testresults/2018-02/msg00308.html for comparison.

At least twenty of the tests allocate increasing memory amounts until the host
memory is exhausted.

Passing -fno-reorder-blocks-and-partition to the acats testsuite run reduces
the unexpected failures to 22.

                === acats Summary ===
# of expected passes            2298
# of unexpected failures        22
*** FAILURES: c23003b c23003g c23003i c250002 c380004 cd2b11a cd2b15c ce2102l
ce2102m ce2103a ce2103b ce3102d ce3107a ce3115a cxa4005 cxa4008 cxa4016 cxa4019
cxac003 cxb3012 cxf3a01 cxf3a02 
/opt/devel/gnu/src/gcc-mingw-w64/gcc-8.0.0/gcc/testsuite/ada/acats/run_all.sh
completed at Wed Feb  7 12:28:36 CET 2018 

On gcc 7.3.1 I get only five unexpected failures:

                === acats Summary ===
# of expected passes            2315
# of unexpected failures        5
*** FAILURES: c23003b c23003g c23003i c250002 c380004