All compilers now support stdc90.

With the removal of Ubuntu 16.04, all compilers in
in the matrix supports c90, so remove this column
from the matrix, and unconditionally test this.

1 files changed, 22 insertions, 23 deletions

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cd75570..566c2e0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,6 @@ jobs:
           #   cc      : C compiler executable.
           #   cxx     : C++ compiler executable for `make ctocpptest`.
           #   stdc11  : Set 'true' if compiler supports C11 standard.  Otherwise, set 'false'.
-          #   stdc90  : Set 'true' if compiler supports C90 standard.  Otherwise, set 'false'.
           #   x32     : Set 'true' if compiler supports x32.  Otherwise, set 'false'.
           #             Set 'fail' if it supports x32 but fails for now.  'fail' cases must be removed.
           #   x86     : Set 'true' if compiler supports x86 (-m32).  Otherwise, set 'false'.
@@ -35,31 +34,31 @@ jobs:
           #   os      : GitHub Actions YAML workflow label.  See https://github.com/actions/virtual-environments#available-environments
 
           # cc
-          { pkgs: '',                                                   cc: cc,        cxx: c++,         stdc11: 'true',  stdc90: 'true',  x32: 'true',  x86: 'true', cxxtest: 'true',  os: ubuntu-latest, },
+          { pkgs: '',                                                   cc: cc,        cxx: c++,         stdc11: 'true', x32: 'true', x86: 'true', cxxtest: 'true',  os: ubuntu-latest, },
 
           # gcc
-          { pkgs: '',                                                   cc: gcc,       cxx: g++,         stdc11: 'true',  stdc90: 'true',  x32: 'true',  x86: 'true', cxxtest: 'true',  os: ubuntu-latest, },
-          { pkgs: 'gcc-11 g++-11 lib32gcc-11-dev libx32gcc-11-dev',     cc: gcc-11,    cxx: g++-11,      stdc11: 'true',  stdc90: 'true',  x32: 'fail',  x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
-          { pkgs: 'gcc-10 lib32gcc-10-dev libx32gcc-10-dev',            cc: gcc-10,    cxx: g++-10,      stdc11: 'true',  stdc90: 'true',  x32: 'true',  x86: 'true', cxxtest: 'true',  os: ubuntu-20.04,  },
-          { pkgs: 'gcc-9  lib32gcc-9-dev  libx32gcc-9-dev',             cc: gcc-9,     cxx: g++-9,       stdc11: 'true',  stdc90: 'true',  x32: 'true',  x86: 'true', cxxtest: 'true',  os: ubuntu-20.04,  },
-          { pkgs: 'gcc-8 g++-8 lib32gcc-8-dev libx32gcc-8-dev',         cc: gcc-8,     cxx: g++-8,       stdc11: 'true',  stdc90: 'true',  x32: 'true',  x86: 'true', cxxtest: 'true',  os: ubuntu-20.04,  },
-          { pkgs: 'gcc-7 g++-7 lib32gcc-7-dev libx32gcc-7-dev',         cc: gcc-7,     cxx: g++-7,       stdc11: 'true',  stdc90: 'true',  x32: 'true',  x86: 'true', cxxtest: 'true',  os: ubuntu-20.04,  },
-          { pkgs: 'gcc-6 g++-6 lib32gcc-6-dev libx32gcc-6-dev',         cc: gcc-6,     cxx: g++-6,       stdc11: 'true',  stdc90: 'true',  x32: 'true',  x86: 'true', cxxtest: 'true',  os: ubuntu-18.04,  },
-          { pkgs: 'gcc-5 g++-5 lib32gcc-5-dev libx32gcc-5-dev',         cc: gcc-5,     cxx: g++-5,       stdc11: 'true',  stdc90: 'true',  x32: 'true',  x86: 'true', cxxtest: 'true',  os: ubuntu-18.04,  },
-          { pkgs: 'gcc-4.8 g++-4.8 lib32gcc-4.8-dev libx32gcc-4.8-dev', cc: gcc-4.8,   cxx: g++-4.8,     stdc11: 'true',  stdc90: 'true',  x32: 'true',  x86: 'true', cxxtest: 'true',  os: ubuntu-18.04,  },
+          { pkgs: '',                                                   cc: gcc,       cxx: g++,         stdc11: 'true', x32: 'true', x86: 'true', cxxtest: 'true',  os: ubuntu-latest, },
+          { pkgs: 'gcc-11 g++-11 lib32gcc-11-dev libx32gcc-11-dev',     cc: gcc-11,    cxx: g++-11,      stdc11: 'true', x32: 'fail', x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
+          { pkgs: 'gcc-10 lib32gcc-10-dev libx32gcc-10-dev',            cc: gcc-10,    cxx: g++-10,      stdc11: 'true', x32: 'true', x86: 'true', cxxtest: 'true',  os: ubuntu-20.04,  },
+          { pkgs: 'gcc-9  lib32gcc-9-dev  libx32gcc-9-dev',             cc: gcc-9,     cxx: g++-9,       stdc11: 'true', x32: 'true', x86: 'true', cxxtest: 'true',  os: ubuntu-20.04,  },
+          { pkgs: 'gcc-8 g++-8 lib32gcc-8-dev libx32gcc-8-dev',         cc: gcc-8,     cxx: g++-8,       stdc11: 'true', x32: 'true', x86: 'true', cxxtest: 'true',  os: ubuntu-20.04,  },
+          { pkgs: 'gcc-7 g++-7 lib32gcc-7-dev libx32gcc-7-dev',         cc: gcc-7,     cxx: g++-7,       stdc11: 'true', x32: 'true', x86: 'true', cxxtest: 'true',  os: ubuntu-20.04,  },
+          { pkgs: 'gcc-6 g++-6 lib32gcc-6-dev libx32gcc-6-dev',         cc: gcc-6,     cxx: g++-6,       stdc11: 'true', x32: 'true', x86: 'true', cxxtest: 'true',  os: ubuntu-18.04,  },
+          { pkgs: 'gcc-5 g++-5 lib32gcc-5-dev libx32gcc-5-dev',         cc: gcc-5,     cxx: g++-5,       stdc11: 'true', x32: 'true', x86: 'true', cxxtest: 'true',  os: ubuntu-18.04,  },
+          { pkgs: 'gcc-4.8 g++-4.8 lib32gcc-4.8-dev libx32gcc-4.8-dev', cc: gcc-4.8,   cxx: g++-4.8,     stdc11: 'true', x32: 'true', x86: 'true', cxxtest: 'true',  os: ubuntu-18.04,  },
 
           # clang
-          { pkgs: 'lib32gcc-11-dev libx32gcc-11-dev',                   cc: clang,     cxx: clang++,     stdc11: 'true',  stdc90: 'true',  x32: 'fail',  x86: 'fail', cxxtest: 'true',  os: ubuntu-latest, },
-          { pkgs: 'clang-12  lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-12,  cxx: clang++-12,  stdc11: 'true',  stdc90: 'true',  x32: 'fail',  x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
-          { pkgs: 'clang-11  lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-11,  cxx: clang++-11,  stdc11: 'true',  stdc90: 'true',  x32: 'fail',  x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
-          { pkgs: 'clang-10  lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-10,  cxx: clang++-10,  stdc11: 'true',  stdc90: 'true',  x32: 'fail',  x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
-          { pkgs: 'clang-9   lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-9,   cxx: clang++-9,   stdc11: 'true',  stdc90: 'true',  x32: 'fail',  x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
-          { pkgs: 'clang-8   lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-8,   cxx: clang++-8,   stdc11: 'true',  stdc90: 'true',  x32: 'fail',  x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
-          { pkgs: 'clang-7   lib32gcc-7-dev  libx32gcc-7-dev',          cc: clang-7,   cxx: clang++-7,   stdc11: 'true',  stdc90: 'true',  x32: 'fail',  x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
-          { pkgs: 'clang-6.0 lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-6.0, cxx: clang++-6.0, stdc11: 'true',  stdc90: 'true',  x32: 'fail',  x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
-          { pkgs: 'clang-5.0 lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-5.0, cxx: clang++-5.0, stdc11: 'true',  stdc90: 'true',  x32: 'fail',  x86: 'fail', cxxtest: 'true',  os: ubuntu-18.04,  },
-          { pkgs: 'clang-4.0 lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-4.0, cxx: clang++-4.0, stdc11: 'true',  stdc90: 'true',  x32: 'fail',  x86: 'fail', cxxtest: 'true',  os: ubuntu-18.04,  },
-          { pkgs: 'clang-3.9 lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-3.9, cxx: clang++-3.9, stdc11: 'true',  stdc90: 'true',  x32: 'fail',  x86: 'fail', cxxtest: 'false', os: ubuntu-18.04,  },
+          { pkgs: 'lib32gcc-11-dev libx32gcc-11-dev',                   cc: clang,     cxx: clang++,     stdc11: 'true', x32: 'fail', x86: 'fail', cxxtest: 'true',  os: ubuntu-latest, },
+          { pkgs: 'clang-12  lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-12,  cxx: clang++-12,  stdc11: 'true', x32: 'fail', x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
+          { pkgs: 'clang-11  lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-11,  cxx: clang++-11,  stdc11: 'true', x32: 'fail', x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
+          { pkgs: 'clang-10  lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-10,  cxx: clang++-10,  stdc11: 'true', x32: 'fail', x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
+          { pkgs: 'clang-9   lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-9,   cxx: clang++-9,   stdc11: 'true', x32: 'fail', x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
+          { pkgs: 'clang-8   lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-8,   cxx: clang++-8,   stdc11: 'true', x32: 'fail', x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
+          { pkgs: 'clang-7   lib32gcc-7-dev  libx32gcc-7-dev',          cc: clang-7,   cxx: clang++-7,   stdc11: 'true', x32: 'fail', x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
+          { pkgs: 'clang-6.0 lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-6.0, cxx: clang++-6.0, stdc11: 'true', x32: 'fail', x86: 'fail', cxxtest: 'true',  os: ubuntu-20.04,  },
+          { pkgs: 'clang-5.0 lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-5.0, cxx: clang++-5.0, stdc11: 'true', x32: 'fail', x86: 'fail', cxxtest: 'true',  os: ubuntu-18.04,  },
+          { pkgs: 'clang-4.0 lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-4.0, cxx: clang++-4.0, stdc11: 'true', x32: 'fail', x86: 'fail', cxxtest: 'true',  os: ubuntu-18.04,  },
+          { pkgs: 'clang-3.9 lib32gcc-11-dev libx32gcc-11-dev',         cc: clang-3.9, cxx: clang++-3.9, stdc11: 'true', x32: 'fail', x86: 'fail', cxxtest: 'false', os: ubuntu-18.04,  },
         ]
 
     runs-on: ${{ matrix.os }}
@@ -91,7 +90,7 @@ jobs:
       run: make V=1 clean all
 
     - name: make c_standards (C90)
-      if: ${{ matrix.stdc90 == 'true' }}
+      if: always()
       run: make V=1 clean c_standards_c90
 
     - name: make c_standards (C11)