diff --git a/.github/alpine_32bit_log_warnings b/.github/alpine_32bit_log_warnings
new file mode 100644
index 000000000000..aa5848ac82a9
--- /dev/null
+++ b/.github/alpine_32bit_log_warnings
@@ -0,0 +1,91 @@
+../../../gettext/gettext-runtime/gnulib-lib/careadlinkat.c:176:5: warning: #warning "GCC might issue a bogus -Wreturn-local-addr warning here." [-Wcpp]
+../../../gettext/gettext-runtime/gnulib-lib/careadlinkat.c:177:5: warning: #warning "See <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93644>." [-Wcpp]
+../../../gettext/gettext-runtime/gnulib-lib/careadlinkat.c:180:10: warning: function may return address of local variable [-Wreturn-local-addr]
+../../../libcpp/expr.cc:842:35: warning: format not a string literal and no format arguments [-Wformat-security]
+../../../libcpp/expr.cc:845:38: warning: format not a string literal and no format arguments [-Wformat-security]
+../../../libcpp/expr.cc:855:33: warning: format not a string literal and no format arguments [-Wformat-security]
+../../../libcpp/expr.cc:867:42: warning: format not a string literal and no format arguments [-Wformat-security]
+../../../libcpp/expr.cc:870:39: warning: format not a string literal and no format arguments [-Wformat-security]
+../../../libcpp/expr.cc:877:35: warning: format not a string literal and no format arguments [-Wformat-security]
+../../../libcpp/lex.cc:2120:39: warning: ‘loc’ may be used uninitialized [-Wmaybe-uninitialized]
+../../../libcpp/macro.cc:185:26: warning: format not a string literal and no format arguments [-Wformat-security]
+../../../libcpp/macro.cc:214:34: warning: format not a string literal and no format arguments [-Wformat-security]
+../../../libcpp/macro.cc:3710:25: warning: format not a string literal and no format arguments [-Wformat-security]
+../../../libcpp/macro.cc:3725:25: warning: format not a string literal and no format arguments [-Wformat-security]
+../../c++tools/server.cc:490:11: warning: ignoring return value of ‘ssize_t write(int, const void*, size_t)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../c++tools/server.cc:620:10: warning: ignoring return value of ‘int pipe(int*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/../libgcc/libgcov-util.c:455:9: warning: ignoring return value of ‘int chdir(const char*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/analyzer/program-state.cc:1498:15: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/analyzer/store.h:310:5: warning: ‘size_in_bytes.generic_wide_int<fixed_wide_int_storage<128> >::<anonymous>.fixed_wide_int_storage<128>::val[1]’ may be used uninitialized [-Wmaybe-uninitialized]
+../../gcc/c-family/c-common.cc:6763:14: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/c-family/c-common.cc:6767:16: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/c/c-convert.cc:84:13: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/c/c-typeck.cc:12453:16: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/c/c-typeck.cc:3878:17: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/c/c-typeck.cc:4648:16: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/c/c-typeck.cc:6913:23: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/collect-utils.cc:237:21: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/collect2.cc:2400:21: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/diagnostic.cc:2316:15: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/expmed.cc:1845:45: warning: ‘*(unsigned int*)((char*)&imode + offsetof(scalar_int_mode, scalar_int_mode::m_mode))’ may be used uninitialized in this function [-Wmaybe-uninitialized]
+../../gcc/fold-const.cc:384:13: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/gcc.cc:10668:12: warning: ignoring return value of ‘ssize_t read(int, void*, size_t)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/gcc.cc:2412:30: warning: too many arguments for format [-Wformat-extra-args]
+../../gcc/gcc.cc:2413:32: warning: unknown conversion type character ‘t’ in format [-Wformat=]
+../../gcc/gcc.cc:2432:30: warning: too many arguments for format [-Wformat-extra-args]
+../../gcc/gcc.cc:2433:32: warning: unknown conversion type character ‘t’ in format [-Wformat=]
+../../gcc/gcc.cc:2458:30: warning: too many arguments for format [-Wformat-extra-args]
+../../gcc/gcc.cc:2459:32: warning: unknown conversion type character ‘t’ in format [-Wformat=]
+../../gcc/gcc.cc:2467:30: warning: too many arguments for format [-Wformat-extra-args]
+../../gcc/gcc.cc:2468:32: warning: unknown conversion type character ‘t’ in format [-Wformat=]
+../../gcc/gcc.cc:2477:30: warning: too many arguments for format [-Wformat-extra-args]
+../../gcc/gcc.cc:2478:32: warning: unknown conversion type character ‘t’ in format [-Wformat=]
+../../gcc/gcc.cc:2487:30: warning: too many arguments for format [-Wformat-extra-args]
+../../gcc/gcc.cc:2488:32: warning: unknown conversion type character ‘t’ in format [-Wformat=]
+../../gcc/gcc.cc:2527:26: warning: too many arguments for format [-Wformat-extra-args]
+../../gcc/gcc.cc:2527:59: warning: unknown conversion type character ‘t’ in format [-Wformat=]
+../../gcc/gcc.cc:2539:22: warning: too many arguments for format [-Wformat-extra-args]
+../../gcc/gcc.cc:2539:51: warning: unknown conversion type character ‘t’ in format [-Wformat=]
+../../gcc/gcc.cc:2553:22: warning: too many arguments for format [-Wformat-extra-args]
+../../gcc/gcc.cc:2553:51: warning: unknown conversion type character ‘t’ in format [-Wformat=]
+../../gcc/gcc.cc:7897:9: warning: ignoring return value of ‘ssize_t write(int, const void*, size_t)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/gcc.cc:7900:13: warning: ignoring return value of ‘ssize_t write(int, const void*, size_t)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/gcc.cc:7901:13: warning: ignoring return value of ‘ssize_t write(int, const void*, size_t)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/gcc.cc:7903:9: warning: ignoring return value of ‘ssize_t write(int, const void*, size_t)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/genhooks.cc:112:17: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/genhooks.cc:121:14: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/genhooks.cc:174:14: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/genhooks.cc:180:14: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/gimple-range-gori.cc:318:19: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/ipa-devirt.cc:967:10: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/lto-wrapper.cc:1151:8: warning: ignoring return value of ‘ssize_t read(int, void*, size_t)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/lto-wrapper.cc:1369:10: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/lto-wrapper.cc:1971:23: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/lto/lto-common.cc:2084:10: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/lto/lto-common.cc:2086:9: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/lto/lto-common.cc:2106:10: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
+../../gcc/text-art/style.cc:150:25: warning: spurious leading punctuation sequence ‘;’ in format [-Wformat-diag]
+../../gcc/text-art/style.cc:160:25: warning: spurious leading punctuation sequence ‘;’ in format [-Wformat-diag]
+../../gcc/text-art/table.cc:981:62: warning: unquoted keyword ‘char’ in format [-Wformat-diag]
+../../gcc/text-art/table.cc:981:69: warning: spurious trailing punctuation sequence ‘])’ in format [-Wformat-diag]
+../../gcc/tree-ssa-sccvn.cc:286:21: warning: format not a string literal and no format arguments [-Wformat-security]
+../../gcc/tree-vect-stmts.cc:10397:47: warning: ‘stride_step’ may be used uninitialized in this function [-Wmaybe-uninitialized]
+../../gcc/vec.h:347:10: warning: ‘void free(void*)’ called on unallocated object ‘dest_bbs’ [-Wfree-nonheap-object]
+../../libcpp/expr.cc:842:35: warning: format not a string literal and no format arguments [-Wformat-security]
+../../libcpp/expr.cc:845:38: warning: format not a string literal and no format arguments [-Wformat-security]
+../../libcpp/expr.cc:855:33: warning: format not a string literal and no format arguments [-Wformat-security]
+../../libcpp/expr.cc:867:42: warning: format not a string literal and no format arguments [-Wformat-security]
+../../libcpp/expr.cc:870:39: warning: format not a string literal and no format arguments [-Wformat-security]
+../../libcpp/expr.cc:877:35: warning: format not a string literal and no format arguments [-Wformat-security]
+../../libcpp/lex.cc:2120:39: warning: ‘loc’ may be used uninitialized [-Wmaybe-uninitialized]
+../../libcpp/macro.cc:185:26: warning: format not a string literal and no format arguments [-Wformat-security]
+../../libcpp/macro.cc:214:34: warning: format not a string literal and no format arguments [-Wformat-security]
+../../libcpp/macro.cc:3710:25: warning: format not a string literal and no format arguments [-Wformat-security]
+../../libcpp/macro.cc:3725:25: warning: format not a string literal and no format arguments [-Wformat-security]
+/home/runner/work/gccrs/gccrs/gccrs-build/x86_64-pc-linux-gnu/libssp/../../../libssp/gets-chk.c:73: warning: the `gets' function is dangerous and should not be used.
+gengtype-lex.cc:357:15: warning: this statement may fall through [-Wimplicit-fallthrough=]
+gengtype-lex.cc:357:15: warning: this statement may fall through [-Wimplicit-fallthrough=]
+gengtype-lex.cc:357:15: warning: this statement may fall through [-Wimplicit-fallthrough=]
+gengtype-lex.cc:357:15: warning: this statement may fall through [-Wimplicit-fallthrough=]
+install.texi:2231: warning: `.' or `,' must follow @xref, not f
+libtool: install: warning: remember to run `libtool --finish /usr/local/libexec/gcc/x86_64-pc-linux-gnu/14.0.1'
diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index 57bb4d630226..2c6837c0419e 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -1,306 +1,306 @@
-name: GCC Rust build and test
-
-on:
-  push:
-    branches:
-      - trying
-      - staging
-  pull_request:
-    branches: [ master ]
-  merge_group:
-
-env:
-  ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
-
-jobs:
-  build-and-check-ubuntu-64bit:
-
-    env:
-      # Force locale, in particular for reproducible results re '.github/bors_log_expected_warnings' (see below).
-      LC_ALL: C.UTF-8
-
-    runs-on: ubuntu-22.04
-
-    steps:
-    - uses: actions/checkout@v3
-
-    - name: Install Deps
-      run: |
-          sudo apt-get update;
-          sudo apt-get install -y \
-                  automake \
-                  autoconf \
-                  libtool \
-                  autogen \
-                  bison \
-                  flex \
-                  libgmp3-dev \
-                  libmpfr-dev \
-                  libmpc-dev \
-                  build-essential \
-                  gcc-multilib \
-                  g++-multilib \
-                  dejagnu;
-          # install Rust directly using rustup
-          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain=1.72.0;
-
-    - name: Configure
-      run: |
-           mkdir -p gccrs-build;
-           cd gccrs-build;
-           ../configure \
-               --enable-languages=rust \
-               --disable-bootstrap \
-               --enable-multilib
-
-    - name: Build
-      shell: bash
-      run: |
-           cd gccrs-build; \
-           # Add cargo to our path quickly
-           . "$HOME/.cargo/env";
-           make -Otarget -j $(nproc) 2>&1 | tee log
-
-    - name: Check for new warnings
-      run: |
-           cd gccrs-build
-           < log grep 'warning: ' | sort > log_warnings
-           if diff -U0 ../.github/bors_log_expected_warnings log_warnings; then
-               :
-           else
-               echo 'See <https://github.com/Rust-GCC/gccrs/pull/1026>.'
-               exit 1
-           fi >&2
-
-    - name: Run Tests
-      run: |
-           cd gccrs-build; \
-           make check-rust RUNTESTFLAGS="--target_board=unix\{-m64}"
-    - name: Archive check-rust results
-      uses: actions/upload-artifact@v3
-      with:
-        name: check-rust-logs
-        path: |
-          gccrs-build/gcc/testsuite/rust/
-    - name: Check regressions
-      run: |
-           cd gccrs-build; \
-           if grep -e "unexpected" -e "unresolved" -e "ERROR:" gcc/testsuite/rust/rust.sum;\
-           then \
-              echo "::error title=Regression test failed::some tests are not correct"; \
-              perl -n ../.github/emit_test_errors.pl < gcc/testsuite/rust/rust.sum; \
-              exit 1; \
-            else \
-              exit 0; \
-            fi
-
-  build-and-check-ubuntu-32bit:
-
-    env:
-      # Force locale, in particular for reproducible results re '.github/bors_log_expected_warnings' (see below).
-      LC_ALL: C.UTF-8
-
-    runs-on: ubuntu-22.04
-
-    steps:
-    - uses: actions/checkout@v3
-
-    - name: Install Deps
-      run: |
-          sudo apt-get update;
-          sudo apt-get install -y \
-                  automake \
-                  autoconf \
-                  libtool \
-                  autogen \
-                  bison \
-                  flex \
-                  libgmp3-dev \
-                  libmpfr-dev \
-                  libmpc-dev \
-                  build-essential \
-                  gcc-multilib \
-                  g++-multilib \
-                  dejagnu;
-          # install Rust directly using rustup
-          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain=1.72.0;
-
-    - name: Configure
-      run: |
-           mkdir -p gccrs-build;
-           cd gccrs-build;
-           ../configure \
-               --enable-languages=rust \
-               --disable-bootstrap \
-               --enable-multilib
-
-    - name: Build
-      shell: bash
-      run: |
-           cd gccrs-build; \
-           # Add cargo to our path quickly
-           . "$HOME/.cargo/env";
-           make -Otarget -j $(nproc) 2>&1 | tee log
-
-    - name: Check for new warnings
-      run: |
-           cd gccrs-build
-           < log grep 'warning: ' | sort > log_warnings
-           if diff -U0 ../.github/bors_log_expected_warnings log_warnings; then
-               :
-           else
-               echo 'See <https://github.com/Rust-GCC/gccrs/pull/1026>.'
-               exit 1
-           fi >&2
-
-    - name: Run Tests
-      run: |
-           cd gccrs-build; \
-           make check-rust RUNTESTFLAGS="--target_board=unix\{-m32}"
-    - name: Archive check-rust results
-      uses: actions/upload-artifact@v3
-      with:
-        name: check-rust-logs
-        path: |
-          gccrs-build/gcc/testsuite/rust/
-    - name: Check regressions
-      run: |
-           cd gccrs-build; \
-           if grep -e "unexpected" -e "unresolved" -e "ERROR:" gcc/testsuite/rust/rust.sum;\
-           then \
-              echo "::error title=Regression test failed::some tests are not correct"; \
-              perl -n ../.github/emit_test_errors.pl < gcc/testsuite/rust/rust.sum; \
-              exit 1; \
-            else \
-              exit 0; \
-            fi
-
-  build-and-check-gcc-48:
-
-    runs-on: ubuntu-22.04
-    container: ubuntu:18.04
-    env:
-      # otherwise we hang when installing tzdata
-      DEBIAN_FRONTEND: noninteractive
-    steps:
-    - uses: actions/checkout@v3
-
-    - name: Install Deps
-      run: |
-          apt-get update;
-          apt-get install -y \
-                  curl \
-                  automake \
-                  autoconf \
-                  libtool \
-                  autogen \
-                  bison \
-                  flex \
-                  libgmp3-dev \
-                  libmpfr-dev \
-                  libmpc-dev \
-                  build-essential \
-                  gcc-4.8 \
-                  g++-4.8 \
-                  gcc-4.8-multilib \
-                  g++-4.8-multilib \
-                  dejagnu;
-          # install Rust directly using rustup
-          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain=1.72.0;
-
-    - name: Configure
-      run: |
-           mkdir -p gccrs-build;
-           cd gccrs-build;
-           ../configure \
-               CC='gcc-4.8' \
-               CXX='g++-4.8' \
-               --enable-languages=rust \
-               --disable-bootstrap \
-               --enable-multilib
-
-    - name: Build
-      shell: bash
-      run: |
-           # Add cargo to our path quickly
-           . "$HOME/.cargo/env";
-           make -C gccrs-build -j $(nproc)
-
-    - name: Run Tests
-      run: |
-           cd gccrs-build; \
-           make check-rust RUNTESTFLAGS="--target_board=unix\{-m32,-m64}"
-
-    - name: Archive check-rust results
-      uses: actions/upload-artifact@v3
-      with:
-        name: check-rust-logs-4.8
-        path: |
-          gccrs-build/gcc/testsuite/rust/
-
-    - name: Check regressions
-      run: |
-           cd gccrs-build; \
-           if grep -e "unexpected" -e "unresolved" -e "ERROR:" gcc/testsuite/rust/rust.sum;\
-           then \
-              echo "::error title=Regression test failed::some tests are not correct"; \
-              exit 1; \
-            else \
-              exit 0; \
-            fi
-
-  build-and-check-clang-macos:
-
-    env:
-      # Force CC/CXX to be explicitly clang to make it clear which compiler is used
-      CC: clang
-      CXX: clang++
-
-    runs-on: macos-13
-
-    steps:
-    - uses: actions/checkout@v3
-
-    - name: Install Deps
-      run: |
-          brew install dejagnu mpfr libmpc gmp;
-          # install Rust directly using rustup
-          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain=1.72.0;
-
-    - name: Configure
-      run: |
-           mkdir -p gccrs-build;
-           cd gccrs-build;
-           ../configure \
-               --enable-languages=rust \
-               --disable-bootstrap \
-               --enable-multilib \
-               --with-native-system-header-dir=/usr/include \
-               --with-sysroot=$(xcrun --show-sdk-path)
-
-    - name: Build
-      shell: bash
-      run: |
-           cd gccrs-build; \
-           make -j $(sysctl -n hw.ncpu) 2>&1 | tee log
-
-    - name: Run Tests
-      run: |
-           cd gccrs-build; \
-           make check-rust
-    - name: Archive check-rust results
-      uses: actions/upload-artifact@v3
-      with:
-        name: check-rust-logs-macos
-        path: |
-          gccrs-build/gcc/testsuite/rust/
-    - name: Check regressions
-      run: |
-           cd gccrs-build; \
-           if grep -e "unexpected" -e "unresolved" -e "ERROR:" gcc/testsuite/rust/rust.sum;\
-           then \
-              echo "::error title=Regression test failed::some tests are not correct"; \
-              exit 1; \
-            else \
-              exit 0; \
-            fi
+# name: GCC Rust build and test
+#
+# on:
+#   push:
+#     branches:
+#       - trying
+#       - staging
+#   pull_request:
+#     branches: [ master ]
+#   merge_group:
+#
+# env:
+#   ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
+#
+# jobs:
+#   build-and-check-ubuntu-64bit:
+#
+#     env:
+#       # Force locale, in particular for reproducible results re '.github/bors_log_expected_warnings' (see below).
+#       LC_ALL: C.UTF-8
+#
+#     runs-on: ubuntu-22.04
+#
+#     steps:
+#     - uses: actions/checkout@v3
+#
+#     - name: Install Deps
+#       run: |
+#           sudo apt-get update;
+#           sudo apt-get install -y \
+#                   automake \
+#                   autoconf \
+#                   libtool \
+#                   autogen \
+#                   bison \
+#                   flex \
+#                   libgmp3-dev \
+#                   libmpfr-dev \
+#                   libmpc-dev \
+#                   build-essential \
+#                   gcc-multilib \
+#                   g++-multilib \
+#                   dejagnu;
+#           # install Rust directly using rustup
+#           curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain=1.72.0;
+#
+#     - name: Configure
+#       run: |
+#            mkdir -p gccrs-build;
+#            cd gccrs-build;
+#            ../configure \
+#                --enable-languages=rust \
+#                --disable-bootstrap \
+#                --enable-multilib
+#
+#     - name: Build
+#       shell: bash
+#       run: |
+#            cd gccrs-build; \
+#            # Add cargo to our path quickly
+#            . "$HOME/.cargo/env";
+#            make -Otarget -j $(nproc) 2>&1 | tee log
+#
+#     - name: Check for new warnings
+#       run: |
+#            cd gccrs-build
+#            < log grep 'warning: ' | sort > log_warnings
+#            if diff -U0 ../.github/bors_log_expected_warnings log_warnings; then
+#                :
+#            else
+#                echo 'See <https://github.com/Rust-GCC/gccrs/pull/1026>.'
+#                exit 1
+#            fi >&2
+#
+#     - name: Run Tests
+#       run: |
+#            cd gccrs-build; \
+#            make check-rust RUNTESTFLAGS="--target_board=unix\{-m64}"
+#     - name: Archive check-rust results
+#       uses: actions/upload-artifact@v3
+#       with:
+#         name: check-rust-logs
+#         path: |
+#           gccrs-build/gcc/testsuite/rust/
+#     - name: Check regressions
+#       run: |
+#            cd gccrs-build; \
+#            if grep -e "unexpected" -e "unresolved" -e "ERROR:" gcc/testsuite/rust/rust.sum;\
+#            then \
+#               echo "::error title=Regression test failed::some tests are not correct"; \
+#               perl -n ../.github/emit_test_errors.pl < gcc/testsuite/rust/rust.sum; \
+#               exit 1; \
+#             else \
+#               exit 0; \
+#             fi
+#
+#   build-and-check-ubuntu-32bit:
+#
+#     env:
+#       # Force locale, in particular for reproducible results re '.github/bors_log_expected_warnings' (see below).
+#       LC_ALL: C.UTF-8
+#
+#     runs-on: ubuntu-22.04
+#
+#     steps:
+#     - uses: actions/checkout@v3
+#
+#     - name: Install Deps
+#       run: |
+#           sudo apt-get update;
+#           sudo apt-get install -y \
+#                   automake \
+#                   autoconf \
+#                   libtool \
+#                   autogen \
+#                   bison \
+#                   flex \
+#                   libgmp3-dev \
+#                   libmpfr-dev \
+#                   libmpc-dev \
+#                   build-essential \
+#                   gcc-multilib \
+#                   g++-multilib \
+#                   dejagnu;
+#           # install Rust directly using rustup
+#           curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain=1.72.0;
+#
+#     - name: Configure
+#       run: |
+#            mkdir -p gccrs-build;
+#            cd gccrs-build;
+#            ../configure \
+#                --enable-languages=rust \
+#                --disable-bootstrap \
+#                --enable-multilib
+#
+#     - name: Build
+#       shell: bash
+#       run: |
+#            cd gccrs-build; \
+#            # Add cargo to our path quickly
+#            . "$HOME/.cargo/env";
+#            make -Otarget -j $(nproc) 2>&1 | tee log
+#
+#     - name: Check for new warnings
+#       run: |
+#            cd gccrs-build
+#            < log grep 'warning: ' | sort > log_warnings
+#            if diff -U0 ../.github/bors_log_expected_warnings log_warnings; then
+#                :
+#            else
+#                echo 'See <https://github.com/Rust-GCC/gccrs/pull/1026>.'
+#                exit 1
+#            fi >&2
+#
+#     - name: Run Tests
+#       run: |
+#            cd gccrs-build; \
+#            make check-rust RUNTESTFLAGS="--target_board=unix\{-m32}"
+#     - name: Archive check-rust results
+#       uses: actions/upload-artifact@v3
+#       with:
+#         name: check-rust-logs
+#         path: |
+#           gccrs-build/gcc/testsuite/rust/
+#     - name: Check regressions
+#       run: |
+#            cd gccrs-build; \
+#            if grep -e "unexpected" -e "unresolved" -e "ERROR:" gcc/testsuite/rust/rust.sum;\
+#            then \
+#               echo "::error title=Regression test failed::some tests are not correct"; \
+#               perl -n ../.github/emit_test_errors.pl < gcc/testsuite/rust/rust.sum; \
+#               exit 1; \
+#             else \
+#               exit 0; \
+#             fi
+#
+#   build-and-check-gcc-48:
+#
+#     runs-on: ubuntu-22.04
+#     container: ubuntu:18.04
+#     env:
+#       # otherwise we hang when installing tzdata
+#       DEBIAN_FRONTEND: noninteractive
+#     steps:
+#     - uses: actions/checkout@v3
+#
+#     - name: Install Deps
+#       run: |
+#           apt-get update;
+#           apt-get install -y \
+#                   curl \
+#                   automake \
+#                   autoconf \
+#                   libtool \
+#                   autogen \
+#                   bison \
+#                   flex \
+#                   libgmp3-dev \
+#                   libmpfr-dev \
+#                   libmpc-dev \
+#                   build-essential \
+#                   gcc-4.8 \
+#                   g++-4.8 \
+#                   gcc-4.8-multilib \
+#                   g++-4.8-multilib \
+#                   dejagnu;
+#           # install Rust directly using rustup
+#           curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain=1.72.0;
+#
+#     - name: Configure
+#       run: |
+#            mkdir -p gccrs-build;
+#            cd gccrs-build;
+#            ../configure \
+#                CC='gcc-4.8' \
+#                CXX='g++-4.8' \
+#                --enable-languages=rust \
+#                --disable-bootstrap \
+#                --enable-multilib
+#
+#     - name: Build
+#       shell: bash
+#       run: |
+#            # Add cargo to our path quickly
+#            . "$HOME/.cargo/env";
+#            make -C gccrs-build -j $(nproc)
+#
+#     - name: Run Tests
+#       run: |
+#            cd gccrs-build; \
+#            make check-rust RUNTESTFLAGS="--target_board=unix\{-m32,-m64}"
+#
+#     - name: Archive check-rust results
+#       uses: actions/upload-artifact@v3
+#       with:
+#         name: check-rust-logs-4.8
+#         path: |
+#           gccrs-build/gcc/testsuite/rust/
+#
+#     - name: Check regressions
+#       run: |
+#            cd gccrs-build; \
+#            if grep -e "unexpected" -e "unresolved" -e "ERROR:" gcc/testsuite/rust/rust.sum;\
+#            then \
+#               echo "::error title=Regression test failed::some tests are not correct"; \
+#               exit 1; \
+#             else \
+#               exit 0; \
+#             fi
+#
+#   build-and-check-clang-macos:
+#
+#     env:
+#       # Force CC/CXX to be explicitly clang to make it clear which compiler is used
+#       CC: clang
+#       CXX: clang++
+#
+#     runs-on: macos-13
+#
+#     steps:
+#     - uses: actions/checkout@v3
+#
+#     - name: Install Deps
+#       run: |
+#           brew install dejagnu mpfr libmpc gmp;
+#           # install Rust directly using rustup
+#           curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain=1.72.0;
+#
+#     - name: Configure
+#       run: |
+#            mkdir -p gccrs-build;
+#            cd gccrs-build;
+#            ../configure \
+#                --enable-languages=rust \
+#                --disable-bootstrap \
+#                --enable-multilib \
+#                --with-native-system-header-dir=/usr/include \
+#                --with-sysroot=$(xcrun --show-sdk-path)
+#
+#     - name: Build
+#       shell: bash
+#       run: |
+#            cd gccrs-build; \
+#            make -j $(sysctl -n hw.ncpu) 2>&1 | tee log
+#
+#     - name: Run Tests
+#       run: |
+#            cd gccrs-build; \
+#            make check-rust
+#     - name: Archive check-rust results
+#       uses: actions/upload-artifact@v3
+#       with:
+#         name: check-rust-logs-macos
+#         path: |
+#           gccrs-build/gcc/testsuite/rust/
+#     - name: Check regressions
+#       run: |
+#            cd gccrs-build; \
+#            if grep -e "unexpected" -e "unresolved" -e "ERROR:" gcc/testsuite/rust/rust.sum;\
+#            then \
+#               echo "::error title=Regression test failed::some tests are not correct"; \
+#               exit 1; \
+#             else \
+#               exit 0; \
+#             fi
diff --git a/.github/workflows/cppp32.yml b/.github/workflows/cppp32.yml
new file mode 100644
index 000000000000..acb13bcde799
--- /dev/null
+++ b/.github/workflows/cppp32.yml
@@ -0,0 +1,132 @@
+name: GCC Rust build and test (Alpine 32-bit)
+
+on:
+  push:
+    branches:
+      - trying
+      - staging
+  pull_request:
+    branches: [ master ]
+  merge_group:
+
+env:
+  ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
+
+jobs:
+  build-alpine-32bit-and-check-alpine-32bit:
+
+    env:
+      # Force locale, in particular for reproducible results re '.github/bors_log_expected_warnings' (see below).
+      LC_ALL: C.UTF-8
+
+    runs-on: ubuntu-22.04
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Setup Alpine Linux (32-bit)
+      uses: jirutka/setup-alpine@v1
+      with:
+        arch: x86
+        packages: >
+          automake
+          autoconf
+          libtool
+          bison
+          flex
+          gmp-dev
+          mpfr-dev
+          mpc1-dev
+          build-base
+          dejagnu
+          curl
+          gcompat
+          libc6-compat
+          libc-dev
+          libc++-dev
+
+    # - name: Install gcc dependency    
+    #   run: |
+    #     sudo apt install gcc-multilib g++-multilib libc6-dev-i386
+    - name: Install Rust
+      run: |
+        curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain=1.72.0 
+      shell: alpine.sh {0}
+
+    - name: Install dependencies with gcc
+      run: |
+         ./contrib/download_prerequisites
+      shell: alpine.sh {0}
+
+    - name: Inspect libc file
+      run: |
+         file /usr/lib/* | grep "libc" 
+
+    - name: Configure
+      run: |
+           mkdir -p gccrs-build;
+           cd gccrs-build;
+           ../configure \
+               --host=i586-alpine-linux-musl --build=i586-alpine-linux-musl --target=i586-alpine-linux-musl \
+               --enable-languages=rust \
+               --disable-bootstrap \
+               --disable-multilib # Try to disable multilib on alpine https://github.com/conan-io/conan/issues/14307#issuecomment-1652433132
+      shell: alpine.sh {0}
+
+    - name: Build
+      run: |
+           cd gccrs-build; \
+           # Add cargo to our path quickly
+           # . "$HOME/.cargo/env";
+           make -Otarget -j $(nproc) 2>&1 | tee log
+      shell: alpine.sh {0}     
+
+    - name: Produce warning logs
+      run: |
+           cd gccrs-build
+           < log grep 'warning: ' | sort > log_warnings
+           cat log_warnings
+      shell: alpine.sh {0}
+    - name: Archive warnings logs
+      uses: actions/upload-artifact@v3
+      with:
+        name: warnings 
+        path: |
+          gccrs-build/log_warnings
+    - name: Check for new warnings
+      run: |
+           cd gccrs-build
+           < log grep 'warning: ' | sort > log_warnings
+           if diff -U0 ../.github/alpine_32bit_log_warnings log_warnings; then
+               :
+           else
+               echo 'See <https://github.com/Rust-GCC/gccrs/pull/1026>.'
+               exit 1
+           fi >&2
+      shell: alpine.sh {0}
+
+    - name: Run Tests
+      run: |
+           cd gccrs-build; \
+           make check-rust RUNTESTFLAGS="--target_board=unix\{-m32}"
+      shell: alpine.sh {0}
+
+    - name: Archive check-rust results
+      uses: actions/upload-artifact@v3
+      with:
+        name: check-rust-logs
+        path: |
+          gccrs-build/gcc/testsuite/rust/
+
+    - name: Check regressions
+      run: |
+           cd gccrs-build; \
+           if grep -e "unexpected" -e "unresolved" -e "ERROR:" gcc/testsuite/rust/rust.sum;\
+           then \
+              echo "::error title=Regression test failed::some tests are not correct"; \
+              perl -n ../.github/emit_test_errors.pl < gcc/testsuite/rust/rust.sum; \
+              exit 1; \
+            else \
+              exit 0; \
+            fi
+      shell: alpine.sh {0}
+