On 18.08.21 13:18, Jakub Jelinek wrote:

gcc/testsuite/ChangeLog:
     * gfortran.dg/nothing-1.f90: New test.
     * gfortran.dg/nothing-2.f90: New test.

While testing manually with -fopenmp, I did manage to place it for the
testsuite run outside the 'gomp/' subdirectory. – Now fixed → attachment.

For completeness (as already discussed on IRC):

+  !$omp nothing
+  if (.false.) &
+& &    !$omp nothing
+    i = i + 1

This indeed does not trigger the sentinel (as also discussed on IRC and as 
comment in the test).
While
  if (x) &
    !$omp nothing
gives an error but it is not obviously invalid. → That's now OpenMP spec bug 
#2914.

Tobias

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commit f0fca213bc52644ba896da622b35842a6157bd98
Author: Tobias Burnus <tob...@codesourcery.com>
Date:   Wed Aug 18 21:47:04 2021 +0200

    Fortran: Add OpenMP's nothing directive support (con't)
    
    Fix directory to enable -fopenmp processing.
    
    gcc/testsuite/
            PR testsuite/101963
            * gfortran.dg/nothing-1.f90: Moved to ...
            * gfortran.dg/gomp/nothing-1.f90: ... here.
            * gfortran.dg/nothing-2.f90: Moved to ...
            * gfortran.dg/gomp/nothing-2.f90: ... here;
            avoid $ issue in $OMP in dg-error.
---
 gcc/testsuite/gfortran.dg/{ => gomp}/nothing-1.f90 | 0
 gcc/testsuite/gfortran.dg/{ => gomp}/nothing-2.f90 | 2 +-
 2 files changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/testsuite/gfortran.dg/nothing-1.f90 b/gcc/testsuite/gfortran.dg/gomp/nothing-1.f90
similarity index 100%
rename from gcc/testsuite/gfortran.dg/nothing-1.f90
rename to gcc/testsuite/gfortran.dg/gomp/nothing-1.f90
diff --git a/gcc/testsuite/gfortran.dg/nothing-2.f90 b/gcc/testsuite/gfortran.dg/gomp/nothing-2.f90
similarity index 75%
rename from gcc/testsuite/gfortran.dg/nothing-2.f90
rename to gcc/testsuite/gfortran.dg/gomp/nothing-2.f90
index 74a4a5a22b0..554d4ef99ca 100644
--- a/gcc/testsuite/gfortran.dg/nothing-2.f90
+++ b/gcc/testsuite/gfortran.dg/gomp/nothing-2.f90
@@ -3,5 +3,5 @@ pure subroutine foo
 end subroutine
 
 subroutine bar
-  !$omp nothing foo  ! { dg-error "Unexpected junk after $OMP NOTHING statement" }
+  !$omp nothing foo  ! { dg-error "Unexpected junk after .OMP NOTHING statement" }
 end

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