[Bug libgomp/92840] [OpenACC] Disallow 'acc_unmap_data' for everything other than 'acc_map_data'

[tschwinge at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92840

--- Comment #3 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Mon Dec  9 22:52:36 2019
New Revision: 279145

URL: https://gcc.gnu.org/viewcvs?rev=279145&root=gcc&view=rev
Log:
[PR92840] [OpenACC] Refuse 'acc_unmap_data' unless mapped by 'acc_map_data'

        libgomp/
        PR libgomp/92840
        * oacc-mem.c (acc_map_data): Clarify reference counting behavior.
        (acc_unmap_data): Add error case for 'REFCOUNT_INFINITY'.
        * testsuite/libgomp.oacc-c-c++-common/acc_unmap_data-pr92840-1.c:
        New file.
        * testsuite/libgomp.oacc-c-c++-common/acc_unmap_data-pr92840-2.c:
        Likewise.
        * testsuite/libgomp.oacc-c-c++-common/acc_unmap_data-pr92840-3.c:
        Likewise.
        * testsuite/libgomp.oacc-c-c++-common/clauses-1.c: Adjust.
        * testsuite/libgomp.oacc-c-c++-common/nested-1.c: Adjust.

Added:
   
trunk/libgomp/testsuite/libgomp.oacc-c-c++-common/acc_unmap_data-pr92840-1.c
   
trunk/libgomp/testsuite/libgomp.oacc-c-c++-common/acc_unmap_data-pr92840-2.c
   
trunk/libgomp/testsuite/libgomp.oacc-c-c++-common/acc_unmap_data-pr92840-3.c
Modified:
    trunk/libgomp/ChangeLog
    trunk/libgomp/oacc-mem.c
    trunk/libgomp/testsuite/libgomp.oacc-c-c++-common/clauses-1.c
    trunk/libgomp/testsuite/libgomp.oacc-c-c++-common/nested-1.c