240422.000738.HKT update test_flang.yml to investigate the error "Git…

…Hub Actions xx lost communication with the server"

.github/workflows/test_flang.yml

@@ -27,8 +27,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest]  # As of 20221217, the flang installed by ../scripts/install_flang may only work with ubuntu-22.04
-        ikind: [i2, i8]
+        os: [ubuntu-latest]  # As of 20240421, the flang installed by ../scripts/install_flang may only work with ubuntu-22.04
+        ikind: [i2, i4, i8]
         solver: [newuoa, cobyla, lincoa, bobyqa, uobyqa]
         fflags: [-O1, -O2, -O3, -g, -fast]
         testdim: [small, big]
@@ -54,6 +54,16 @@ jobs:
       - name: Miscellaneous setup
         run: bash .github/scripts/misc_setup
 
+      - name: Revise maxtr
+        # This is to see whether "GitHub Actions xx lost communication with the server" was caused
+        # by maxtr = huge(maxtr) - 1_IK. We suspect this because the error occurs with ikind = i8
+        # but not ikind = i2.
+        if: ${{ matrix.ikind == 'i8' }}
+        run: |
+          cd fortran/${{ matrix.solver }}
+          $SEDI 's|maxtr = huge(maxtr) - 1_IK|maxtr = 60000|' *.f90
+          grep 'maxtr = ' *.f90
+
       - name: Conduct the test
         run: |
           cd "$ROOT_DIR"/fortran/${{ matrix.solver }} && bash ./flint --all && bash ./mlint --all