[pull] master from GaijinEntertainment:master

.github/workflows/build.yml

@@ -256,13 +256,6 @@ jobs:
             ;;
         esac
 
-    # sccache on PRs: per-TU content-hash cache via GHA backend. Master clean.
-    - uses: mozilla-actions/sccache-action@v0.0.10
-    - run: |
-        echo "SCCACHE_GHA_ENABLED=true" >> $GITHUB_ENV
-        echo "CMAKE_C_COMPILER_LAUNCHER=sccache" >> $GITHUB_ENV
-        echo "CMAKE_CXX_COMPILER_LAUNCHER=sccache" >> $GITHUB_ENV
-
     - name: "Build: Daslang"
       run: |
         set -eux
@@ -303,6 +296,22 @@ jobs:
     - name: "Test"
       run: |
         set -eux
+        # When daslang is sanitizer-instrumented, its JIT-emitted .dll cache
+        # link cmd needs -fsanitize=<kind> to pull the sanitizer runtime
+        # (otherwise unresolved __ubsan_*/__asan_*/__tsan_* symbols in lib.so).
+        JIT_LINKER_STRING=""
+        case "${{ matrix.sanitizers }}" in
+            ubsan) JIT_LINKER_STRING="--jit-linker-string=-fsanitize=undefined" ;;
+            asan)  JIT_LINKER_STRING="--jit-linker-string=-fsanitize=address"   ;;
+            tsan)  JIT_LINKER_STRING="--jit-linker-string=-fsanitize=thread"    ;;
+        esac
+        # daslang built with clang on sanitizer matrix — JIT-emitted .dll
+        # must link with the same compiler (incompatible asan/tsan runtimes
+        # otherwise). c++ default = g++ on Ubuntu, mismatches.
+        JIT_PATH_TO_LINKER=""
+        if [ "${{ matrix.sanitizers }}" != "none" ] && [ -n "${{ matrix.sanitizers }}" ]; then
+            JIT_PATH_TO_LINKER="--jit-path-to-linker=clang++"
+        fi
         case "${{ matrix.target }}${{ matrix.architecture }}" in
            linux64)
             cd bin
@@ -314,7 +323,7 @@ jobs:
             printf 'leak:format_error\nleak:uriParseSingleUriA\nleak:uriMakeOwner\n' > suppressions.txt
             export LSAN_OPTIONS="suppressions=$(pwd)/suppressions.txt"
             # Use more time to pass UBSAN and disable leaks in JIT mode because we exit using exit(), and do not call destructors.
-            [ "${{ env.das_llvm_disabled }}" = "ON" ] || ASAN_OPTIONS=detect_leaks=0 ./daslang _dasroot_/dastest/dastest.das -jit -- --color --failures-only --timeout 900 --test ../tests || ASAN_OPTIONS=detect_leaks=0 ./daslang _dasroot_/dastest/dastest.das -jit -- --color --failures-only --isolated-mode --timeout 3600 --test ../tests
+            [ "${{ env.das_llvm_disabled }}" = "ON" ] || ASAN_OPTIONS=detect_leaks=0 ./daslang _dasroot_/dastest/dastest.das -jit -- $JIT_LINKER_STRING $JIT_PATH_TO_LINKER --color --failures-only --timeout 900 --test ../tests || ASAN_OPTIONS=detect_leaks=0 ./daslang _dasroot_/dastest/dastest.das -jit -- $JIT_LINKER_STRING $JIT_PATH_TO_LINKER --color --failures-only --isolated-mode --timeout 3600 --test ../tests
             ./daslang _dasroot_/dastest/dastest.das -- --color --failures-only --timeout 900 --test ../tests || ./daslang _dasroot_/dastest/dastest.das -- --color --failures-only --isolated-mode --timeout 3600 --test ../tests
             ;;
            windows32)
@@ -323,7 +332,7 @@ jobs:
             ;;
            windows*)
             cd bin/"${{ matrix.cmake_preset }}"
-            [ "${{ env.das_llvm_disabled }}" = "ON" ] || ./daslang _dasroot_/dastest/dastest.das -jit -- --timeout 900 --color --failures-only --test ../../tests || ./daslang _dasroot_/dastest/dastest.das -jit -- --color --failures-only --isolated-mode --timeout 3600 --test ../../tests
+            [ "${{ env.das_llvm_disabled }}" = "ON" ] || ./daslang _dasroot_/dastest/dastest.das -jit -- $JIT_LINKER_STRING $JIT_PATH_TO_LINKER --timeout 900 --color --failures-only --test ../../tests || ./daslang _dasroot_/dastest/dastest.das -jit -- $JIT_LINKER_STRING $JIT_PATH_TO_LINKER --color --failures-only --isolated-mode --timeout 3600 --test ../../tests
             ./daslang _dasroot_/dastest/dastest.das -- --color --failures-only --timeout 900 --test ../../tests || ./daslang _dasroot_/dastest/dastest.das -- --color --failures-only --isolated-mode --timeout 3600 --test ../../tests
             ;;
            linux_arm64)
@@ -334,12 +343,12 @@ jobs:
             # runs JIT — keep --failures-only off there so PASS lines print and
             # name the test running just before the hang if it reoccurs (see
             # RC2 release run #25572466058).
-            [ "${{ env.das_llvm_disabled }}" = "ON" ] || [ "${{ matrix.cmake_preset }}" = "Debug" ] || ./daslang _dasroot_/dastest/dastest.das -jit -- --color --timeout 900 --test ../tests || ./daslang _dasroot_/dastest/dastest.das -jit -- --color --failures-only --isolated-mode --timeout 3600 --test ../tests
+            [ "${{ env.das_llvm_disabled }}" = "ON" ] || [ "${{ matrix.cmake_preset }}" = "Debug" ] || ./daslang _dasroot_/dastest/dastest.das -jit -- $JIT_LINKER_STRING $JIT_PATH_TO_LINKER --color --timeout 900 --test ../tests || ./daslang _dasroot_/dastest/dastest.das -jit -- $JIT_LINKER_STRING $JIT_PATH_TO_LINKER --color --failures-only --isolated-mode --timeout 3600 --test ../tests
             ./daslang _dasroot_/dastest/dastest.das -- --color --failures-only --timeout 900 --test ../tests || ./daslang _dasroot_/dastest/dastest.das -- --color --failures-only --isolated-mode --timeout 3600 --test ../tests
             ;;
            *)
             cd bin
-            [ "${{ env.das_llvm_disabled }}" = "ON" ] || ./daslang _dasroot_/dastest/dastest.das -jit -- --color --failures-only --timeout 900 --test ../tests || ./daslang _dasroot_/dastest/dastest.das -jit -- --color --failures-only --isolated-mode --timeout 3600 --test ../tests
+            [ "${{ env.das_llvm_disabled }}" = "ON" ] || ./daslang _dasroot_/dastest/dastest.das -jit -- $JIT_LINKER_STRING $JIT_PATH_TO_LINKER --color --failures-only --timeout 900 --test ../tests || ./daslang _dasroot_/dastest/dastest.das -jit -- $JIT_LINKER_STRING $JIT_PATH_TO_LINKER --color --failures-only --isolated-mode --timeout 3600 --test ../tests
             ./daslang _dasroot_/dastest/dastest.das -- --color --failures-only --timeout 900 --test ../tests || ./daslang _dasroot_/dastest/dastest.das -- --color --failures-only --isolated-mode --timeout 3600 --test ../tests
             ;;
         esac

.github/workflows/extended_checks.yml

@@ -124,15 +124,6 @@ jobs:
         ./vcpkg/vcpkg install openssl:x64-windows --binarycaching
         echo "VCPKG_ROOT=$(pwd)/vcpkg" >> $GITHUB_ENV
 
-    # sccache on PRs: per-TU content-hash cache via GHA backend. Master clean.
-    - if: github.event_name == 'pull_request'
-      uses: mozilla-actions/sccache-action@v0.0.10
-    - if: github.event_name == 'pull_request'
-      run: |
-        echo "SCCACHE_GHA_ENABLED=true" >> $GITHUB_ENV
-        echo "CMAKE_C_COMPILER_LAUNCHER=sccache" >> $GITHUB_ENV
-        echo "CMAKE_CXX_COMPILER_LAUNCHER=sccache" >> $GITHUB_ENV
-
     - name: "Build: Daslang (Release)"
       run: |
         set -eux

CLAUDE.md

@@ -265,6 +265,7 @@ Full migration table (when reading older docs that say `var inscope` or `<-` for
 | `unsafe { ...; unsafe { ... }; ... }` (nested `unsafe { }` block) | drop the inner wrap | STYLE026: outer `unsafe` already covers the whole inner scope, so the inner block is pure noise. Closure / lambda / generator bodies are NOT nested for this rule — they execute in a separate context where the outer wrap does not propagate |
 | `for (s in A) { B \|> push(s) }` / `push_clone(s)` (iter-var only) | `B \|> push_from(A)` / `push_clone_from(A)` | PERF022: the bulk overload in builtin.das reserves combined capacity up front. Single name `push`/`push_clone` is overloaded between single-element and bulk (ambiguous when destination is `array<T[]>`); the `_from` suffix names the bulk intent. Source must be `array<T>` or C-array — range/iterator sources are not flagged. `emplace` is out of scope (const iter-var can't be moved) |
 | `var a : array<T>; for (x in SRC) { if (COND) { a \|> push(EXPR) } }` (or `table<K;V>` + `insert`/`a[k]=v`) | `var a <- [for (x in SRC); EXPR; where COND]` (or `\{for (...); k => v; where ...\}`) | STYLE027: var with empty default-init followed by a for-loop that only push/insert into it. Accepts depth ≤ 2 nested fors and if-filters at any depth. `emplace` excluded — move-source-zeroing differs from comprehension element-construction. Iterator-comprehension form (`[$f ...]`) NOT suggested |
+| `var X = clone_expression(E); ... $e(X) ...` (only-uses-are-qmacro-splice) | drop the pre-clone, inline `$e(E)` at each splice site | PERF023: `qmacro`/`qmacro_block`/`qmacro_expr`/`qmacro_block_to_array` go through `apply_template` (templates_boost.das:251), which calls `clone_expression` on every substitution input. Pre-cloning is wasted work. Detection: post-expansion `$e(X)` becomes `add_ptr_ref(X)` inside an `ExprMakeBlock`; visitor tracks splice-wrapper depth via preVisitExprCall/visitExprCall counter on `add_ptr_ref`, classifies each candidate `ExprVar` reference as "safe" when depth>0. Fires only when ALL uses are safe AND ≥1 is observed. Multi-clone-of-same-source flagged too — apply_template clones each substitution independently |
 
 For path/filename ops use `fio` helpers (`base_name`/`dir_name`/`path_join`/etc.) — see `skills/filesystem.md`. Never hand-roll `rfind("/")` / slice — misses Windows separators.
 

daslib/ast_match.das

@@ -925,9 +925,8 @@ def private generate_const_constructor_match(call : ExprCall?; folded_rtti : str
     body |> push <| qmacro_expr(${ var $i(cast_var) = $e(as_cast); })
     if (!has_tags_in_args(call)) {
         // Fast path: all args are constants — clone the call, compiler folds it, compare with !=
-        var pat_clone = clone_expression(unsafe(reinterpret<Expression?>(call)))
         let pat_var = next_var(index)
-        body |> push <| qmacro_expr(${ var $i(pat_var) = $e(pat_clone); })
+        body |> push <| qmacro_expr(${ var $i(pat_var) = $e(unsafe(reinterpret<Expression?>(call))); })
         var cond = qmacro($i(cast_var).value != $i(pat_var))
         qm_const_value_guard(at, cast_var, actual_var, cond, body)
     } else {