[Bug c++/98446] New: C++ modules test failures

[Bug c++/98446] New: C++ modules test failures

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98446

            Bug ID: 98446
           Summary: C++ modules test failures
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: nathan at acm dot org
  Target Milestone: ---

On a machine with 112 cores, "make check -j 112" generates

FAIL: g++.dg/modules/alias-1_b.C -std=c++17  scan-lang-dump-times module "CMI
is " 1
FAIL: g++.dg/modules/alias-1_b.C -std=c++17 (test for excess errors)
FAIL: g++.dg/modules/alias-1_b.C -std=c++2a  scan-lang-dump-times module "CMI
is " 1
FAIL: g++.dg/modules/alias-1_b.C -std=c++2a (test for excess errors)
FAIL: g++.dg/modules/alias-1_d.C module-cmi kevin (gcm.cache/kevin.gcm)
FAIL: g++.dg/modules/alias-1_d.C -std=c++17 (test for excess errors)
FAIL: g++.dg/modules/alias-1_d.C -std=c++2a (test for excess errors)
FAIL: g++.dg/modules/alias-1_e.C -std=c++17 (test for excess errors)
FAIL: g++.dg/modules/alias-1_e.C -std=c++2a (test for excess errors)
FAIL: g++.dg/modules/alias-1_f.C -std=c++17 (test for excess errors)
FAIL: g++.dg/modules/alias-1_f.C -std=c++2a (test for excess errors)
FAIL: g++.dg/modules/alias-2_b.C -std=c++17 (test for excess errors)
FAIL: g++.dg/modules/alias-2_b.C -std=c++2a (test for excess errors)
FAIL: g++.dg/modules/cpp-6_c.C -std=c++17 (test for excess errors)
FAIL: g++.dg/modules/cpp-6_c.C -std=c++2a (test for excess errors)
FAIL: g++.dg/modules/dir-only-2_b.C -std=c++17 (test for excess errors)
FAIL: g++.dg/modules/dir-only-2_b.C -std=c++2a (test for excess errors)

In module imported at
/export/gnu/import/git/sources/gcc/gcc/testsuite/g++.dg/modules/alias-1_b.C:5:1:
/export/ssd/git/sources/gcc/gcc/testsuite/g++.dg/modules/alias-1_a.H: error:
failed to read compiled module: No such file or directory
/export/ssd/git/sources/gcc/gcc/testsuite/g++.dg/modules/alias-1_a.H: note:
compiled module file is
'gcm.cache/./export/ssd/git/sources/gcc/gcc/testsuite/g++.dg/modules/alias-1_a.H.gcm'
/export/ssd/git/sources/gcc/gcc/testsuite/g++.dg/modules/alias-1_a.H: note:
imports must be built before being imported
/export/ssd/git/sources/gcc/gcc/testsuite/g++.dg/modules/alias-1_a.H: fatal
error: returning to the gate for a mechanical issue
compilation terminated.
compiler exited with status 1
FAIL: g++.dg/modules/alias-1_b.C -std=c++17 (test for excess errors)

Does g++.dg/modules support "make -jN check"?

[Bug c++/98446] C++ modules test failures

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98446

Nathan Sidwell <nathan at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nathan at gcc dot gnu.org

--- Comment #1 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
I regularly use make check-g++ -j24, so I'll suspect something else