Update copyright years

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v4...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/dependabot.yml

@@ -0,0 +1,11 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "github-actions" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+        interval: "weekly"

.github/workflows/ci.yml

@@ -27,6 +27,7 @@ jobs:
           - toolset: gcc-9
             cxxstd: "03,11,14,17,2a"
             os: ubuntu-22.04
+            install: g++-9
           - toolset: clang-15
             cxxstd: "03,11,14,17,2a"
             os: ubuntu-22.04
@@ -40,7 +41,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install packages
         if: matrix.install
@@ -126,7 +127,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Setup Boost
         shell: cmd
@@ -176,7 +177,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install packages
         if: matrix.install
@@ -220,7 +221,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install packages
         if: matrix.install
@@ -265,10 +266,21 @@ jobs:
       - name: Use the installed library
         run: |
           cd ../boost-root/libs/$LIBRARY/test/cmake_install_test && mkdir __build__ && cd __build__
-          cmake -DCMAKE_INSTALL_PREFIX=~/.local ..
-          cmake --build .
+
           export LD_LIBRARY_PATH=$HOME/.local/lib:$LD_LIBRARY_PATH
-          ctest --output-on-failure --no-tests=error
+
+          set -e
+          if [[ "$OSTYPE" == "darwin"* ]]; then
+              BACKENDS_ARRAY=(stacktrace stacktrace_noop stacktrace_basic)
+          else
+              BACKENDS_ARRAY=(stacktrace stacktrace_noop stacktrace_basic stacktrace_backtrace)
+          fi
+          for BACKEND in ${BACKENDS_ARRAY[@]}; do
+              rm -rf *
+              cmake -DCMAKE_INSTALL_PREFIX=~/.local -DBOOST_STACKTRACE_IMPL_BACKEND=${BACKEND} ..
+              cmake --build .
+              ctest --output-on-failure --no-tests=error -V
+          done
 
   posix-cmake-test:
     strategy:
@@ -280,7 +292,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install packages
         if: matrix.install
@@ -332,7 +344,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Setup Boost
         shell: cmd
@@ -380,7 +392,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Setup Boost
         shell: cmd
@@ -425,10 +437,20 @@ jobs:
         shell: cmd
         run: |
           cd ../boost-root/libs/%LIBRARY%/test/cmake_install_test && mkdir __build__ && cd __build__
-          cmake -DCMAKE_INSTALL_PREFIX=C:/cmake-prefix ..
+          cmake -DCMAKE_INSTALL_PREFIX=C:/cmake-prefix -DBOOST_STACKTRACE_IMPL_BACKEND=stacktrace ..
           cmake --build . --config Debug
           PATH C:\cmake-prefix\bin;%PATH%
-          ctest --output-on-failure --no-tests=error -C Debug
+          ctest --output-on-failure --no-tests=error -C Debug -V
+
+          cmake -DCMAKE_INSTALL_PREFIX=C:/cmake-prefix -DBOOST_STACKTRACE_IMPL_BACKEND=stacktrace_windbg ..
+          cmake --build . --config Debug
+          PATH C:\cmake-prefix\bin;%PATH%
+          ctest --output-on-failure --no-tests=error -C Debug -V
+
+          cmake -DCMAKE_INSTALL_PREFIX=C:/cmake-prefix -DBOOST_STACKTRACE_IMPL_BACKEND=stacktrace_windbg_cached  ..
+          cmake --build . --config Debug
+          PATH C:\cmake-prefix\bin;%PATH%
+          ctest --output-on-failure --no-tests=error -C Debug -V
 
       - name: Use the installed library (RelWithDebInfo)
         shell: cmd
@@ -448,7 +470,7 @@ jobs:
     runs-on: ${{matrix.os}}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Setup Boost
         shell: cmd

CMakeLists.txt

@@ -2,7 +2,7 @@
 # Distributed under the Boost Software License, Version 1.0.
 # https://www.boost.org/LICENSE_1_0.txt
 
-cmake_minimum_required(VERSION 3.5...3.16)
+cmake_minimum_required(VERSION 3.8...4.20)
 
 project(boost_stacktrace VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
 
@@ -72,7 +72,7 @@ stacktrace_check(BOOST_STACKTRACE_HAS_WINDBG has_windbg.cpp "" "dbgeng;ole32" ""
 stacktrace_check(BOOST_STACKTRACE_HAS_WINDBG_CACHED has_windbg_cached.cpp "${CMAKE_CURRENT_SOURCE_DIR}/../config/include" "dbgeng;ole32" "")
 
 set(_default_from_exception ON)
-if (NOT CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64|AMD64|amd64|i386|i686|x86")
+if (CMAKE_CXX_PLATFORM_ID MATCHES "Cygwin")
   set(_default_from_exception OFF)
 endif()
 
@@ -142,8 +142,6 @@ stacktrace_add_library(from_exception ${BOOST_STACKTRACE_ENABLE_FROM_EXCEPTION}
 
 #
 
-if(BUILD_TESTING AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/test/CMakeLists.txt")
-
+if(BUILD_TESTING)
   add_subdirectory(test)
-
 endif()

build/Jamfile.v2

@@ -249,8 +249,7 @@ rule build-stacktrace-from-exception ( props * )
         case "off" :  return <build>no ;
     }
 
-    local arch = [ property.select <architecture> : $(props) ] ;
-    if $(arch) && ( $(arch:G=) != x86 )
+    if ( <target-os>cygwin in $(props) )
     {
         configure.log-library-search-result "boost.stacktrace.from_exception" : "no" ;
         return <build>no ;

build/has_addr2line.cpp

@@ -1,11 +1,10 @@
-// Copyright Antony Polukhin, 2016-2020.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at
 // http://www.boost.org/LICENSE_1_0.txt)
 
 #include <cstdlib>
-#include <string>
 
 #include <boost/config.hpp>
 #include <unwind.h>
@@ -15,11 +14,10 @@
 int main() {
 
 #ifdef BOOST_STACKTRACE_ADDR2LINE_LOCATION
-    std::string s = BOOST_STRINGIZE( BOOST_STACKTRACE_ADDR2LINE_LOCATION );
-    s += " -h";
+    const char* s = BOOST_STRINGIZE( BOOST_STACKTRACE_ADDR2LINE_LOCATION ) " -h";
 #else
-    std::string s = "/usr/bin/addr2line -h";
+    const char* s = "/usr/bin/addr2line -h";
 #endif
 
-    return std::system(s.c_str());
+    return std::system(s);
 }

build/has_backtrace.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

build/has_windbg.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2020.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

build/has_windbg_cached.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2020.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

doc/Jamfile.v2

@@ -1,4 +1,4 @@
-# Copyright Antony Polukhin, 2016-2025.
+# Copyright Antony Polukhin, 2016-2026.
 # Use, modification, and distribution are
 # subject to the Boost Software License, Version 1.0. (See accompanying
 # file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

doc/stacktrace.qbk

@@ -334,6 +334,17 @@ target_link_libraries(${PROJECT}  # your project
 )
 ```
 
+If Boost is installed into the system the best way to get it for your project
+is via `find_package`:
+
+```
+find_package(
+    Boost
+    REQUIRED stacktrace stacktrace_from_exception
+    CONFIG
+)
+```
+
 [endsect]
 
 [section CMake build notes]

example/assert_handler.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

example/debug_function.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

example/terminate_handler.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

example/throwing_st.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

example/trace_addresses.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

example/user_config.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

example/user_config.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/addr2line_impls.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/addr_base.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/addr_base_msvc.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/collect_msvc.ipp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/collect_noop.ipp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/collect_unwind.ipp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/frame_decl.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/frame_msvc.ipp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/frame_noop.ipp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/frame_unwind.ipp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/libbacktrace_impls.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/location_from_symbol.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/pop_options.h

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/push_options.h

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/safe_dump_noop.ipp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/safe_dump_posix.ipp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/safe_dump_win.ipp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/to_dec_array.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/to_hex_array.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/try_dec_convert.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/unwind_base_impls.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/detail/void_ptr_cast.hpp

@@ -1,5 +1,5 @@
 // Copyright 2014 Renato Tegon Forti, Antony Polukhin.
-// Copyright Antony Polukhin, 2015-2025.
+// Copyright Antony Polukhin, 2015-2026.
 //
 // Distributed under the Boost Software License, Version 1.0.
 // (See accompanying file LICENSE_1_0.txt

include/boost/stacktrace/frame.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/safe_dump_to.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/stacktrace.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/stacktrace_fwd.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

include/boost/stacktrace/this_thread.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2023-2025.
+// Copyright Antony Polukhin, 2023-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

index.html

@@ -1,6 +1,6 @@
 <!DOCTYPE html>
 <!--
- Copyright (c) Antony Polukhin, 2014-2024
+ Copyright (c) Antony Polukhin, 2014-2026
  antoshkka at gmail dot com
 
  Distributed under the Boost Software License,
@@ -31,7 +31,7 @@ boost-no-inspect
     <a href="../../doc/html/stacktrace.html">../../doc/html/stacktrace.html</a>
   </p>
   <p>
-    &copy; Antony Polukhin, 2014-2024
+    &copy; Antony Polukhin, 2014-2026
   </p>
 </body>
 </html>

src/addr2line.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2020.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

src/backtrace.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2020.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

src/basic.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2020.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

src/exception_headers.h

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2023-2025.
+// Copyright Antony Polukhin, 2023-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

src/from_exception.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2023-2025.
+// Copyright Antony Polukhin, 2023-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at
@@ -160,29 +160,14 @@ BOOST_SYMBOL_EXPORT void assert_no_pending_traces() noexcept {
 #include <exception>
 #include <dlfcn.h>
 
+
 #if !BOOST_STACKTRACE_ALWAYS_STORE_IN_PADDING
+#include <cstdlib>
+#include <cstring>
 #include <mutex>
 #include <unordered_map>
 
-#ifndef BOOST_STACKTRACE_LIBCXX_RUNTIME_MAY_CAUSE_MEMORY_LEAK
-
-#ifdef BOOST_HAS_THREADS
-
-#error On this platform memory leaks are possible if capturing stacktrace from \
-        exceptions is enabled and exceptions are thrown concurrently \
-        and libc++ runtime is used. \
-        \
-        Define `BOOST_STACKTRACE_LIBCXX_RUNTIME_MAY_CAUSE_MEMORY_LEAK` to \
-        suppress this error if the library would not be used with libc++ \
-        runtime (for example, it would be only used with GCC runtime). \
-        \
-        Otherwise, disable the boost_stacktrace_from_exception library build \
-        (for example by `./b2 boost.stacktrace.from_exception=off` option).
-
-#endif
-
-#endif
-
+#include <unistd.h>
 #endif
 
 namespace {
@@ -297,6 +282,32 @@ void* __cxa_allocate_exception(size_t thrown_size) throw() {
 extern "C" BOOST_SYMBOL_EXPORT
 void __cxa_decrement_exception_refcount(void *thrown_object) throw() {
   BOOST_ASSERT(is_libcpp_runtime());
+
+#if !defined(BOOST_STACKTRACE_LIBCXX_RUNTIME_MAY_CAUSE_MEMORY_LEAK) && defined(BOOST_HAS_THREADS)
+  static const char* leaks_are_fine = std::getenv("BOOST_STACKTRACE_LIBCXX_RUNTIME_MAY_CAUSE_MEMORY_LEAK");
+  if (!leaks_are_fine || leaks_are_fine[0] != '1') {
+        const char* const warning =
+            "\n\n"
+            "=======================================================================================\n"
+            "\n"
+            "On this platform, memory leaks may occur if capturing stacktrace from exceptions is\n"
+            "enabled and exceptions are thrown concurrently by libc++ runtime (libc++abi).\n"
+            "\n"
+            "A proper workaround is to use libstdc++ runtime (libgcc_s) instead.\n"
+            "\n"
+            "Alternatively, if you are willing to accept potential MEMORY LEAKS, set the environment\n"
+            "variable `BOOST_STACKTRACE_LIBCXX_RUNTIME_MAY_CAUSE_MEMORY_LEAK=1` to proceed. You can\n"
+            "also define the `BOOST_STACKTRACE_LIBCXX_RUNTIME_MAY_CAUSE_MEMORY_LEAK` macro when\n"
+            "building the `boost_stacktrace_from_exception` library to disable this warning and to\n"
+            "get the MEMORY LEAKS silently on libc++ runtime.\n"
+            "\n"
+            "=======================================================================================\n"
+        ;
+        write(STDERR_FILENO, warning, std::strlen(warning));
+        std::abort();
+  }
+#endif
+
   if (!thrown_object) {
     return;
   }

src/noop.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2020.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

src/windbg.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2020.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

src/windbg_cached.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2020.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

test/appveyor.yml

@@ -2,7 +2,7 @@
 # subject to the Boost Software License, Version 1.0. (See accompanying
 # file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 #
-# Copyright Antony Polukhin, 2016-2025.
+# Copyright Antony Polukhin, 2016-2026.
 
 #
 # See https://svn.boost.org/trac/boost/wiki/TravisCoverals for description of this file

test/cmake_install_test/CMakeLists.txt

@@ -1,15 +1,24 @@
 # Copyright 2018-2021 Peter Dimov
+# Copyright Antony Polukhin, 2025-2026
+#
 # Distributed under the Boost Software License, Version 1.0.
 # https://www.boost.org/LICENSE_1_0.txt
 
-cmake_minimum_required(VERSION 3.5...3.20)
+cmake_minimum_required(VERSION 3.8...4.20)
 
 project(cmake_install_test LANGUAGES CXX)
 
-find_package(boost_stacktrace REQUIRED)
-
+find_package(
+    Boost
+    REQUIRED stacktrace ${BOOST_STACKTRACE_IMPL_BACKEND} stacktrace_from_exception
+    CONFIG
+)
 add_executable(main main.cpp)
-target_link_libraries(main Boost::stacktrace)
+target_link_libraries(main Boost::${BOOST_STACKTRACE_IMPL_BACKEND})
+
+add_executable(main_from_exception main.cpp)
+target_link_libraries(main_from_exception Boost::stacktrace_from_exception Boost::${BOOST_STACKTRACE_IMPL_BACKEND})
 
 enable_testing()
 add_test(main main)
+add_test(main_from_exception main_from_exception)

test/cmake_install_test/main.cpp

@@ -1,5 +1,6 @@
 // Copyright 2019 Peter Dimov
-// Copyright 2022-2025 Antony Polukhin
+// Copyright Antony Polukhin, 2025-2026
+//
 // Distributed under the Boost Software License, Version 1.0.
 // https://www.boost.org/LICENSE_1_0.txt
 
@@ -9,4 +10,9 @@
 int main()
 {
     std::cout << boost::stacktrace::stacktrace() << std::endl;
+    try {
+        throw 42;
+    } catch (...) {
+        std::cout << "From current excption:\n" << boost::stacktrace::stacktrace::from_current_exception() << std::endl;
+    }
 }

test/test.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

test/test_from_exception.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2023-2025.
+// Copyright Antony Polukhin, 2023-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

test/test_from_exception_none.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2023-2025.
+// Copyright Antony Polukhin, 2023-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

test/test_impl.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

test/test_impl.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

test/test_noop.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

test/test_num_conv.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

test/test_trivial.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2022-2025.
+// Copyright Antony Polukhin, 2022-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at

test/thread_safety_checking.cpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2025.
+// Copyright Antony Polukhin, 2016-2026.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at