name: CI Linux

on:
  workflow_dispatch:
  push:
    branches:
      - master
    paths-ignore:
      - '**.md'
      - '**.yml'
      - '!**/linux_ci.yml'
      - 'cmd/tools/**'
      - '!cmd/tools/builders/**.v'
  pull_request:
    paths-ignore:
      - '**.md'
      - '**.yml'
      - '!**/linux_ci.yml'
      - 'cmd/tools/**'
      - '!cmd/tools/builders/**.v'

concurrency:
  group: linux-${{ github.workflow }}-${{ github.ref == 'refs/heads/master' && github.sha || github.ref }}
  cancel-in-progress: true

jobs:
  tcc-linux:
    runs-on: ubuntu-24.04
    timeout-minutes: 121
    env:
      VFLAGS: -cc tcc -no-retry-compilation
      VTEST_SHOW_LONGEST_BY_RUNTIME: 3
      VTEST_SHOW_LONGEST_BY_COMPTIME: 3
      VTEST_SHOW_LONGEST_BY_TOTALTIME: 3
    steps:
      - uses: actions/checkout@v7
      - uses: ./.github/actions/cache-apt-packages-action
      - name: Build v
        run: make -j4 && ./v symlink
      - name: Build v with -prealloc
        run: v run ci/linux_ci.vsh build_v_with_prealloc
      - name: All code is formatted
        run: v run ci/linux_ci.vsh all_code_is_formatted_tcc
      - name: Install dependencies for examples and tools
        run: v run ci/linux_ci.vsh install_dependencies_for_examples_and_tools_tcc
      - name: Test v->c
        run: v run ci/linux_ci.vsh test_v_to_c_tcc
      - name: v self compilation
        run: v run ci/linux_ci.vsh v_self_compilation_tcc
      - name: v doctor
        run: v run ci/linux_ci.vsh v_doctor_tcc
      - name: Verify `v test` works
        run: v run ci/linux_ci.vsh verify_v_test_works_tcc
      - name: Test pure V math module
        run: v run ci/linux_ci.vsh test_pure_v_math_module_tcc
      - name: Test inline assembly on linux
        run: v run ci/linux_ci.vsh test_inline_assembly
      - name: Self tests
        run: v run ci/linux_ci.vsh self_tests_tcc
      - name: Build examples
        run: v run ci/linux_ci.vsh build_examples_tcc
      - name: Run the submodule example, using a relative path
        run: v run ci/linux_ci.vsh run_submodule_example_tcc
      - name: Build v tools
        run: v run ci/linux_ci.vsh build_tools_tcc
      - name: Build v binaries
        run: v run ci/linux_ci.vsh build_vbinaries_tcc
      - name: Build benches
        run: v run ci/linux_ci.vsh build_benches_tcc
      - name: Run a VSH script
        run: v run ci/linux_ci.vsh run_vsh_script_tcc
      - name: Test v tutorials
        run: v run ci/linux_ci.vsh test_v_tutorials_tcc
      - name: Build cmd/tools/fast
        run: v run ci/linux_ci.vsh build_fast_tcc
      - name: V self compilation with -usecache
        run: v run ci/linux_ci.vsh v_self_compilation_usecache_tcc
      - name: Test password input
        run: v run ci/linux_ci.vsh test_password_input_tcc
      - name: Test readline
        run: v run ci/linux_ci.vsh test_readline_tcc
      - name: Test leak detector
        run: v run ci/linux_ci.vsh test_leak_detector_tcc
      - name: Test leak detector not being active for normal compile
        run: v run ci/linux_ci.vsh test_leak_detector_not_active_tcc

  gcc-linux:
    runs-on: ubuntu-24.04
    timeout-minutes: 121
    env:
      VTEST_SHOW_LONGEST_BY_RUNTIME: 3
      VTEST_SHOW_LONGEST_BY_COMPTIME: 3
      VTEST_SHOW_LONGEST_BY_TOTALTIME: 3
    steps:
      - uses: actions/checkout@v7
      - uses: ./.github/actions/cache-apt-packages-action
      - name: Build V
        run: make -j4 && ./v symlink
      - name: backend x64 regressions
        if: ${{ false }} # Temporarily disabled.
        run: |
          set -e

          VJOBS=1 ./v test \
            vlib/v2_toberemoved/abi \
            vlib/v2_toberemoved/gen/x64/x64_abi_test.v \
            vlib/v2_toberemoved/gen/x64/x64_backend_diagnostics_test.v \
            vlib/v2_toberemoved/gen/x64/x64_object_format_test.v \
            vlib/v2_toberemoved/gen/x64/x64_pe_linker_test.v \
            vlib/v2_toberemoved/ssa/tree_sumtype_lowering_test.v
          VJOBS=1 ./v test -run-only test_module_qualified_alias_array_field_index_has_alias_element_type,test_module_storage_legacy_direct_import_nested_module_selector_uses_declared_leaf_module,test_module_storage_flat_direct_import_nested_module_selector_uses_declared_leaf_module vlib/v2_toberemoved/ssa/module_storage_test.v
          VJOBS=1 ./v test -run-only test_x64_linux_math_log_20_stdout_exact_bytes,test_x64_linux_generic_sumtype_direct_wrap_stdout_exact_bytes,test_x64_linux_generic_sumtype_repeated_base_specialization_stdout_exact_bytes,test_x64_linux_generic_sumtype_receiver_size_stdout_exact_bytes,test_x64_linux_generic_sumtype_insert_size_stdout_exact_bytes,test_x64_linux_struct_float_fields_stdout_exact_bytes,test_x64_linux_union_f64_bits_stdout_exact_bytes,test_x64_linux_f64_str_interpolation_stdout_exact_bytes,test_x64_linux_f64_for_interpolation_stdout_exact_bytes,test_x64_linux_formatted_int_interpolation_stdout_exact_bytes,test_x64_linux_formatted_int_width_100_interpolation_stdout_exact_bytes,test_x64_linux_formatted_f64_interpolation_stdout_exact_bytes,test_x64_linux_formatted_string_return_lifetime_stdout_exact_bytes,test_x64_linux_spectral_reduced_formatted_stdout_exact_bytes,test_x64_linux_bits_len32_stdout_exact_bytes,test_x64_linux_rand_u32n_interface_result_stdout_exact_bytes,test_x64_linux_rand_intn_range_interface_result_stdout_exact_bytes,test_x64_linux_textscanner_embedded_parser_stdout_exact_bytes,test_x64_linux_struct_positional_side_effect_stdout_exact_bytes,test_x64_linux_struct_named_side_effect_stdout_exact_bytes,test_x64_linux_unrelated_same_shape_struct_stdout_exact_bytes,test_x64_linux_named_init_embedded_value_stdout_exact_bytes,test_x64_linux_get_raw_line_example_stdin_stdout_exact_bytes,test_x64_linux_mini_calculator_example_stdin_stdout_exact_bytes,test_x64_linux_mini_calculator_recursive_descent_example_stdin_stdout_exact_bytes,test_x64_linux_external_c_flag_source_uses_hosted_link_with_compile_flags vlib/v2_toberemoved/gen/x64/x64_runtime_smoke_test.v
          VJOBS=1 ./v test -run-only test_non_generic_concrete_sumtype_return_wraps_variant,test_option_concrete_sumtype_return_wraps_variant,test_generic_sumtype_declared_param_order_is_preserved_for_crossed_variants,test_worker_clone_sees_sumtype_decl_variant_cache,test_sumtype_decl_variant_cache_records_concrete_generic_variants_only,test_generic_sumtype_match_uses_full_specialization_when_generic_base_repeats,test_flat_direct_generic_sumtype_match_uses_full_specialization_when_generic_base_repeats,test_generic_sumtype_match_smartcast_scans_full_specialization_body,test_flat_direct_generic_sumtype_match_smartcast_scans_full_specialization_body,test_nested_module_concrete_generic_sumtype_base_does_not_fall_back_to_local_tree,test_leaf_module_concrete_generic_sumtype_base_fallback_beats_parent_module_tree vlib/v2_toberemoved/transformer/monomorphize_test.v
          ./v test vlib/v2_toberemoved/builder/native_test.v vlib/v2_toberemoved/builder/target_os_test.v
          ./v test vlib/v2_toberemoved/ssa/optimize
          V2_VERIFY_STRICT=1 ./v test vlib/v2_toberemoved/ssa/optimize

      - name: backend x64 examples
        if: ${{ false }} # Temporarily disabled.
        run: |
          set -e

          tmp="$(mktemp -d)"
          trap 'rm -rf "$tmp"' EXIT

          check_empty_stderr() {
            label="$1"
            stderr="$2"
            if [ -s "$stderr" ]; then
              echo "::error::$label wrote to stderr"
              cat "$stderr"
              return 1
            fi
          }

          check_stdout() {
            label="$1"
            expected="$2"
            actual="$3"
            if ! cmp -s "$expected" "$actual"; then
              echo "::error::$label stdout mismatch"
              echo "expected:"
              cat "$expected"
              echo "actual:"
              cat "$actual"
              return 1
            fi
          }

          run_native_x64_example() {
            source="$1"
            name="$2"
            expected="$3"
            shift 3

            ./v -v2 -no-parallel -b x64 "$source" -o "$tmp/$name"
            "$tmp/$name" "$@" > "$tmp/$name.out" 2> "$tmp/$name.err"
            check_empty_stderr "$name" "$tmp/$name.err"
            check_stdout "$name" "$expected" "$tmp/$name.out"
          }

          run_native_x64_example_with_stdin() {
            source="$1"
            name="$2"
            input="$3"
            expected="$4"
            shift 4

            ./v -v2 -no-parallel -b x64 "$source" -o "$tmp/$name"
            "$tmp/$name" "$@" < "$input" > "$tmp/$name.out" 2> "$tmp/$name.err"
            check_empty_stderr "$name" "$tmp/$name.err"
            check_stdout "$name" "$expected" "$tmp/$name.out"
          }

          run_native_x64_example_capture() {
            source="$1"
            name="$2"
            shift 2

            ./v -v2 -no-parallel -b x64 "$source" -o "$tmp/$name"
            "$tmp/$name" "$@" > "$tmp/$name.out" 2> "$tmp/$name.err"
            check_empty_stderr "$name" "$tmp/$name.err"
          }

          check_random_ips_stdout() {
            label="$1"
            actual="$2"
            python3 - "$label" "$actual" <<'PY'
          import sys

          label = sys.argv[1]
          path = sys.argv[2]
          lines = open(path, "r", encoding="utf-8").read().splitlines()
          if len(lines) != 10:
              raise SystemExit(f"{label}: expected 10 lines, got {len(lines)}")
          rows = []
          for line in lines:
              parts = line.split(".")
              if len(parts) != 4:
                  raise SystemExit(f"{label}: invalid IPv4 shape: {line!r}")
              row = []
              for part in parts:
                  if not part.isdigit():
                      raise SystemExit(f"{label}: non-numeric octet in {line!r}")
                  value = int(part)
                  if value < 0 or value > 254:
                      raise SystemExit(f"{label}: octet out of range in {line!r}")
                  row.append(value)
              rows.append(tuple(row))
          if len(set(rows)) < 3:
              raise SystemExit(f"{label}: output has too little row diversity")
          if all(row[1] == 0 for row in rows) and all(row[3] == 0 for row in rows):
              raise SystemExit(f"{label}: suspicious old x.0.x.0 pattern")
          PY
          }

          check_rule110_stdout() {
            label="$1"
            actual="$2"
            width="$3"
            python3 - "$label" "$actual" "$width" <<'PY'
          import sys

          label = sys.argv[1]
          path = sys.argv[2]
          width = int(sys.argv[3])
          lines = open(path, "r", encoding="utf-8").read().splitlines()
          title = "Rule 110 V Implementation"
          title_lines = [idx for idx, line in enumerate(lines) if title in line]
          if not title_lines:
              raise SystemExit(f"{label}: missing title")
          idx = title_lines[0]
          generations = lines[idx + 1:]
          if generations and generations[0] == "":
              generations = generations[1:]
          if len(generations) != width:
              raise SystemExit(f"{label}: expected {width} generation lines, got {len(generations)}")
          for line in generations:
              if len(line) != width:
                  raise SystemExit(f"{label}: generation line has width {len(line)}, expected {width}: {line!r}")
              if any(ch not in " *" for ch in line):
                  raise SystemExit(f"{label}: invalid generation chars: {line!r}")
          if not any("*" in line for line in generations):
              raise SystemExit(f"{label}: expected at least one live cell")
          if len(set(generations)) < 3:
              raise SystemExit(f"{label}: expected at least 3 distinct generation lines")
          PY
          }

          write_v_run_expected() {
            source="$1"
            expected="$2"
            shift 2
            stderr="$tmp/$(basename "$expected").stderr"
            ./v run "$source" "$@" > "$expected" 2> "$stderr"
            check_empty_stderr "v run $source $*" "$stderr"
          }

          write_v_run_expected_with_stdin() {
            source="$1"
            input="$2"
            expected="$3"
            shift 3
            stderr="$tmp/$(basename "$expected").stderr"
            ./v run "$source" "$@" < "$input" > "$expected" 2> "$stderr"
            check_empty_stderr "v run $source $*" "$stderr"
          }

          write_fizz_buzz_expected() {
            i=1
            while [ "$i" -le 100 ]; do
              if [ $((i % 15)) -eq 0 ]; then
                echo FizzBuzz
              elif [ $((i % 3)) -eq 0 ]; then
                echo Fizz
              elif [ $((i % 5)) -eq 0 ]; then
                echo Buzz
              else
                echo "$i"
              fi
              i=$((i + 1))
            done
          }

          write_hanoi_expected() {
            python3 - <<'PY'
          def hanoi(n, a, b, c):
              if n == 1:
                  print(f"Disc 1 from {a} to {c}...")
              else:
                  hanoi(n - 1, a, c, b)
                  print(f"Disc {n} from {a} to {c}...")
                  hanoi(n - 1, b, a, c)

          hanoi(7, "A", "B", "C")
          PY
          }

          write_sudoku_expected() {
            python3 - <<'PY'
          import sys

          puzzle = [
              [0, 3, 0, 0, 7, 0, 0, 0, 0],
              [0, 0, 0, 1, 3, 5, 0, 0, 0],
              [0, 0, 1, 0, 0, 0, 0, 5, 0],
              [1, 0, 0, 0, 6, 0, 0, 0, 3],
              [4, 0, 0, 8, 0, 3, 0, 0, 1],
              [7, 0, 0, 0, 2, 0, 0, 0, 6],
              [0, 0, 0, 0, 0, 0, 2, 1, 0],
              [0, 0, 0, 4, 1, 2, 0, 0, 5],
              [0, 0, 0, 0, 0, 0, 0, 7, 4],
          ]
          solution = [
              [2, 3, 5, 6, 7, 8, 1, 4, 9],
              [9, 4, 7, 1, 3, 5, 8, 6, 2],
              [6, 8, 1, 2, 4, 9, 3, 5, 7],
              [1, 2, 8, 7, 6, 4, 5, 9, 3],
              [4, 5, 6, 8, 9, 3, 7, 2, 1],
              [7, 9, 3, 5, 2, 1, 4, 8, 6],
              [3, 6, 4, 9, 5, 7, 2, 1, 8],
              [8, 7, 9, 4, 1, 2, 6, 3, 5],
              [5, 1, 2, 3, 8, 6, 9, 7, 4],
          ]

          def append_grid(lines, label, grid):
              lines.append(label)
              for i, row in enumerate(grid):
                  if i % 3 == 0 and i != 0:
                      lines.append("- - - - - - - - - - - -")
                  line = ""
                  for j, value in enumerate(row):
                      if j % 3 == 0 and j != 0:
                          line += " | "
                      line += f"{value} "
                  lines.append(line)

          lines = []
          append_grid(lines, "Sudoku Puzzle:", puzzle)
          lines.append("Solving...")
          append_grid(lines, "Solution:", solution)
          out = ("\n".join(lines) + "\n").encode()
          if len(out) != 582:
              raise SystemExit(f"sudoku stdout oracle shape changed: {len(out)} bytes")
          sys.stdout.buffer.write(out)
          PY
          }

          write_tree_of_nodes_expected() {
            cat <<'EOF'
          tree structure:
           Node{
              value: 10
              left: Tree(Node{
                  value: 30
                  left: Tree(Empty{})
                  right: Tree(Empty{})
              })
              right: Tree(Node{
                  value: 20
                  left: Tree(Empty{})
                  right: Tree(Empty{})
              })
          }
          tree size: 3
          EOF
          }

          write_js_hello_world_expected() {
            printf 'Hello from V.js (0)\nHello from V.js (1)\nHello from V.js (2)\n'
          }

          write_vascii_expected() {
            python3 - <<'PY'
          from pathlib import Path
          import sys

          source = Path("examples/vascii.v").read_text(encoding="utf-8")
          start_marker = "println('"
          end_marker = "')"
          if source.count(start_marker) != 1:
              raise SystemExit("vascii stdout oracle expects one single-quoted println literal")
          start = source.index(start_marker) + len(start_marker)
          end = source.rindex(end_marker)
          if source[end + len(end_marker):].strip() != "}":
              raise SystemExit("vascii stdout oracle expects the println literal to be the final main statement")

          out = bytearray()
          literal = source[start:end]
          i = 0
          while i < len(literal):
              ch = literal[i]
              if ch == "\\":
                  i += 1
                  if i >= len(literal):
                      raise SystemExit("unterminated escape in vascii literal")
                  escaped = literal[i]
                  if escaped == "n":
                      out.append(10)
                  elif escaped == "t":
                      out.append(9)
                  elif escaped == "r":
                      out.append(13)
                  elif escaped == "\\":
                      out.append(92)
                  elif escaped == "'":
                      out.append(39)
                  elif escaped == '"':
                      out.append(34)
                  else:
                      out.extend(escaped.encode("utf-8"))
              else:
                  out.extend(ch.encode("utf-8"))
              i += 1
          out.append(10)
          sys.stdout.buffer.write(out)
          PY
          }

          write_rune_expected() {
            printf '\360\237\230\200\n@\n'
          }

          printf 'Hello, World!\n' > "$tmp/hello_world.expected"
          write_fizz_buzz_expected > "$tmp/fizz_buzz.expected"
          write_hanoi_expected > "$tmp/hanoi.expected"
          write_sudoku_expected > "$tmp/sudoku.expected"
          printf 'HELLO WORLD\nHELLO WORLD\nHELLO WORLD\n' > "$tmp/function_types.expected"
          printf '5\n3\n' > "$tmp/submodule.expected"
          printf '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n' > "$tmp/fibonacci_10.expected"
          printf '120\n' > "$tmp/dump_factorial.expected"
          write_v_run_expected examples/primes.v "$tmp/primes_20.expected" 20
          write_tree_of_nodes_expected > "$tmp/tree_of_nodes.expected"
          write_js_hello_world_expected > "$tmp/js_hello_world.expected"
          write_vascii_expected > "$tmp/vascii.expected"
          write_rune_expected > "$tmp/rune.expected"
          write_v_run_expected examples/graphs/bfs.v "$tmp/bfs.expected"
          write_v_run_expected examples/graphs/bfs3.v "$tmp/bfs3.expected"
          write_v_run_expected examples/graphs/dfs.v "$tmp/dfs.expected"
          write_v_run_expected examples/graphs/dijkstra.v "$tmp/dijkstra.expected"
          write_v_run_expected examples/graphs/topological_sorting_greedy.v "$tmp/topological_sorting_greedy.expected"
          write_v_run_expected examples/graphs/topological_sorting_dfs.v "$tmp/topological_sorting_dfs.expected"
          write_v_run_expected examples/graphs/dfs2.v "$tmp/dfs2.expected"
          write_v_run_expected examples/graphs/minimal_spann_tree_prim.v "$tmp/minimal_spann_tree_prim.expected"
          write_v_run_expected examples/graphs/bellman-ford.v "$tmp/bellman_ford.expected"
          write_v_run_expected examples/binary_search_tree.v "$tmp/binary_search_tree.expected"
          printf 'wrong format\nempty input\n' > "$tmp/errors.expected"
          write_v_run_expected examples/custom_error.v "$tmp/custom_error.expected"
          write_v_run_expected examples/spectral.v "$tmp/spectral_10.expected" 10
          printf 'length of random array is 1000\nbefore quick sort whether array is sorted: false\nafter quick sort whether array is sorted: true\n' > "$tmp/quick_sort.expected"
          printf 'hello\nworld\n' > "$tmp/get_raw_line.in"
          write_v_run_expected_with_stdin examples/get_raw_line.v "$tmp/get_raw_line.in" "$tmp/get_raw_line.expected"
          printf '3+4*2\nexit\n' > "$tmp/mini_calculator.in"
          write_v_run_expected_with_stdin examples/mini_calculator.v "$tmp/mini_calculator.in" "$tmp/mini_calculator.expected"
          printf '3+4*2\nexit\n' > "$tmp/mini_calculator_recursive_descent.in"
          write_v_run_expected_with_stdin examples/mini_calculator_recursive_descent.v "$tmp/mini_calculator_recursive_descent.in" "$tmp/mini_calculator_recursive_descent.expected"

          run_native_x64_example examples/hello_world.v hello_world "$tmp/hello_world.expected"
          run_native_x64_example examples/fizz_buzz.v fizz_buzz "$tmp/fizz_buzz.expected"
          run_native_x64_example examples/hanoi.v hanoi "$tmp/hanoi.expected"
          run_native_x64_example examples/sudoku.v sudoku "$tmp/sudoku.expected"
          run_native_x64_example examples/function_types.v function_types "$tmp/function_types.expected"
          run_native_x64_example examples/submodule/main.v submodule "$tmp/submodule.expected"
          run_native_x64_example examples/fibonacci.v fibonacci "$tmp/fibonacci_10.expected" 10
          run_native_x64_example examples/dump_factorial.v dump_factorial "$tmp/dump_factorial.expected"
          run_native_x64_example examples/primes.v primes "$tmp/primes_20.expected" 20
          run_native_x64_example examples/tree_of_nodes.v tree_of_nodes "$tmp/tree_of_nodes.expected"
          run_native_x64_example examples/js_hello_world.v js_hello_world "$tmp/js_hello_world.expected"
          run_native_x64_example examples/vascii.v vascii "$tmp/vascii.expected"
          run_native_x64_example examples/rune.v rune "$tmp/rune.expected"
          run_native_x64_example examples/graphs/bfs.v bfs "$tmp/bfs.expected"
          run_native_x64_example examples/graphs/bfs3.v bfs3 "$tmp/bfs3.expected"
          run_native_x64_example examples/graphs/dfs.v dfs "$tmp/dfs.expected"
          run_native_x64_example examples/graphs/dijkstra.v dijkstra "$tmp/dijkstra.expected"
          run_native_x64_example examples/graphs/topological_sorting_greedy.v topological_sorting_greedy "$tmp/topological_sorting_greedy.expected"
          run_native_x64_example examples/graphs/topological_sorting_dfs.v topological_sorting_dfs "$tmp/topological_sorting_dfs.expected"
          run_native_x64_example examples/graphs/dfs2.v dfs2 "$tmp/dfs2.expected"
          run_native_x64_example examples/graphs/minimal_spann_tree_prim.v minimal_spann_tree_prim "$tmp/minimal_spann_tree_prim.expected"
          run_native_x64_example examples/graphs/bellman-ford.v bellman_ford "$tmp/bellman_ford.expected"
          run_native_x64_example examples/binary_search_tree.v binary_search_tree "$tmp/binary_search_tree.expected"
          run_native_x64_example examples/errors.v errors "$tmp/errors.expected"
          run_native_x64_example examples/custom_error.v custom_error "$tmp/custom_error.expected"
          run_native_x64_example examples/spectral.v spectral "$tmp/spectral_10.expected" 10
          run_native_x64_example examples/quick_sort.v quick_sort "$tmp/quick_sort.expected"
          run_native_x64_example_with_stdin examples/get_raw_line.v get_raw_line "$tmp/get_raw_line.in" "$tmp/get_raw_line.expected"
          run_native_x64_example_with_stdin examples/mini_calculator.v mini_calculator "$tmp/mini_calculator.in" "$tmp/mini_calculator.expected"
          run_native_x64_example_with_stdin examples/mini_calculator_recursive_descent.v mini_calculator_recursive_descent "$tmp/mini_calculator_recursive_descent.in" "$tmp/mini_calculator_recursive_descent.expected"
          run_native_x64_example_capture examples/random_ips.v random_ips
          check_random_ips_stdout random_ips "$tmp/random_ips.out"
          run_native_x64_example_capture examples/rule110.v rule110 31
          check_rule110_stdout rule110 "$tmp/rule110.out" 31
      - name: All code is formatted
        run: v run ci/linux_ci.vsh all_code_is_formatted_gcc
      - name: Install dependencies for examples and tools
        run: v run ci/linux_ci.vsh install_dependencies_for_examples_and_tools_gcc
      - name: Recompile V with -cstrict and gcc
        run: v run ci/linux_ci.vsh recompile_v_with_cstrict_gcc
      - name: Valgrind v.c
        run: v run ci/linux_ci.vsh valgrind_v_c_gcc
      - name: Run sanitizers
        run: v run ci/linux_ci.vsh run_sanitizers_gcc
      - name: v self compilation
        run: v run ci/linux_ci.vsh v_self_compilation_gcc
      - name: v self compilation with -usecache
        run: v run ci/linux_ci.vsh v_self_compilation_usecache_gcc
      - name: Verify `v test` works
        run: v run ci/linux_ci.vsh verify_v_test_works_gcc
      - name: Test pure V math module
        run: v run ci/linux_ci.vsh test_pure_v_math_module_gcc
      - name: Self tests
        run: v run ci/linux_ci.vsh self_tests_gcc
      - name: Self tests (-prod)
        run: v run ci/linux_ci.vsh self_tests_prod_gcc
      - name: Self tests (-cstrict)
        run: v run ci/linux_ci.vsh self_tests_cstrict_gcc
      - name: Build examples
        run: v run ci/linux_ci.vsh build_examples_gcc
      - name: Build tetris with -autofree
        run: v run ci/linux_ci.vsh build_tetris_autofree_gcc
      - name: Build blog tutorial with -autofree
        run: v run ci/linux_ci.vsh build_blog_autofree_gcc
      - name: Build option_test.c.v with -autofree
        run: v run ci/linux_ci.vsh build_option_test_autofree_gcc
      - name: V self compilation with -parallel-cc
        run: v run ci/linux_ci.vsh v_self_compilation_parallel_cc_gcc
      - name: Build modules
        run: v run ci/linux_ci.vsh build_modules_gcc
      - name: compile vdoctor.v with -prod
        run: v run ci/linux_ci.vsh compile_vdoctor_prod_gcc
      - name: compile vup.v with -prod
        run: v run ci/linux_ci.vsh compile_vup_prod_gcc

  clang-linux:
    runs-on: ubuntu-24.04
    timeout-minutes: 121
    env:
      VFLAGS: -cc clang
      VTEST_SHOW_LONGEST_BY_RUNTIME: 3
      VTEST_SHOW_LONGEST_BY_COMPTIME: 3
      VTEST_SHOW_LONGEST_BY_TOTALTIME: 3
    steps:
      - uses: actions/checkout@v7
      - uses: ./.github/actions/cache-apt-packages-action
      - name: Build V
        run: make -j4 && ./v symlink
      - name: All code is formatted
        run: v run ci/linux_ci.vsh all_code_is_formatted_clang
      - name: Install dependencies for examples and tools
        run: v run ci/linux_ci.vsh install_dependencies_for_examples_and_tools_clang
      - name: Recompile V with -cstrict and clang
        run: v run ci/linux_ci.vsh recompile_v_with_cstrict_clang
      - name: Valgrind
        run: v run ci/linux_ci.vsh valgrind_clang
      - name: Run sanitizers
        run: v run ci/linux_ci.vsh run_sanitizers_clang
      - name: v self compilation
        run: v run ci/linux_ci.vsh v_self_compilation_clang
      - name: v self compilation with -usecache
        run: v run ci/linux_ci.vsh v_self_compilation_usecache_clang
      - name: Verify `v test` works
        run: v run ci/linux_ci.vsh verify_v_test_works_clang
      - name: Test pure V math module
        run: v run ci/linux_ci.vsh test_pure_v_math_module_clang
      - name: Self tests
        run: v run ci/linux_ci.vsh self_tests_clang
      - name: Self tests (vprod)
        run: v run ci/linux_ci.vsh self_tests_vprod_clang
      - name: Self tests (-cstrict)
        run: v run ci/linux_ci.vsh self_tests_cstrict_clang
      - name: Build examples
        run: v run ci/linux_ci.vsh build_examples_clang
      - name: Build examples with -autofree
        run: v run ci/linux_ci.vsh build_examples_autofree_clang
      - name: Build modules
        run: v run ci/linux_ci.vsh build_modules_clang