Add info that the library is proposed for C++20

Drop dependency on lexical_cast and add more tests

include/boost/stacktrace/detail/addr2line_impls.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at
@@ -13,8 +13,9 @@
 #endif
 
 #include <boost/stacktrace/detail/to_hex_array.hpp>
+#include <boost/stacktrace/detail/to_dec_array.hpp>
+#include <boost/stacktrace/detail/try_dec_convert.hpp>
 #include <boost/core/demangle.hpp>
-#include <boost/lexical_cast.hpp>
 #include <cstdio>
 
 #include <sys/types.h>
@@ -212,7 +213,7 @@ std::size_t frame::source_line() const {
     }
     res = res.substr(last + 1);
 
-    if (!boost::conversion::try_lexical_convert(res, line_num)) {
+    if (!boost::stacktrace::detail::try_dec_convert(res.c_str(), line_num)) {
         return 0;
     }
 

include/boost/stacktrace/detail/collect_msvc.ipp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // 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, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // 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, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // 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, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // 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, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at
@@ -16,7 +16,7 @@
 
 #include <boost/core/demangle.hpp>
 #include <boost/core/noncopyable.hpp>
-#include <boost/lexical_cast.hpp>
+#include <boost/stacktrace/detail/to_dec_array.hpp>
 #include <boost/stacktrace/detail/to_hex_array.hpp>
 #include <windows.h>
 #include "dbgeng.h"
@@ -329,7 +329,7 @@ public:
             res += " at ";
             res += source_line.first;
             res += ':';
-            res += boost::lexical_cast<boost::array<char, 40> >(source_line.second).data();
+            res += boost::stacktrace::detail::to_dec_array(source_line.second).data();
         } else if (!module_name.empty()) {
             res += " in ";
             res += module_name;
@@ -349,7 +349,7 @@ std::string to_string(const frame* frames, std::size_t size) {
         if (i < 10) {
             res += ' ';
         }
-        res += boost::lexical_cast<boost::array<char, 40> >(i).data();
+        res += boost::stacktrace::detail::to_dec_array(i).data();
         res += '#';
         res += ' ';
         idebug.to_string_impl(frames[i].address(), res);

include/boost/stacktrace/detail/frame_noop.ipp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // 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, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at
@@ -16,8 +16,8 @@
 
 #include <boost/stacktrace/detail/to_hex_array.hpp>
 #include <boost/stacktrace/detail/location_from_symbol.hpp>
+#include <boost/stacktrace/detail/to_dec_array.hpp>
 #include <boost/core/demangle.hpp>
-#include <boost/lexical_cast.hpp>
 
 #include <cstdio>
 
@@ -67,7 +67,7 @@ std::string to_string(const frame* frames, std::size_t size) {
         if (i < 10) {
             res += ' ';
         }
-        res += boost::lexical_cast<boost::array<char, 40> >(i).data();
+        res += boost::stacktrace::detail::to_dec_array(i).data();
         res += '#';
         res += ' ';
         res += impl(frames[i].address());
@@ -84,7 +84,7 @@ std::string to_string(const frame* frames, std::size_t size) {
 std::string frame::name() const {
 #if !defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
     ::Dl_info dli;
-    const bool dl_ok = !!::dladdr(addr_, &dli);
+    const bool dl_ok = !!::dladdr(const_cast<void*>(addr_), &dli); // `dladdr` on Solaris accepts nonconst addresses
     if (dl_ok && dli.dli_sname) {
         return boost::core::demangle(dli.dli_sname);
     }

include/boost/stacktrace/detail/libbacktrace_impls.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at
@@ -13,9 +13,9 @@
 #endif
 
 #include <boost/stacktrace/detail/to_hex_array.hpp>
+#include <boost/stacktrace/detail/to_dec_array.hpp>
 #include <boost/stacktrace/detail/location_from_symbol.hpp>
 #include <boost/core/demangle.hpp>
-#include <boost/lexical_cast.hpp>
 
 #include <backtrace.h>
 
@@ -99,7 +99,7 @@ struct to_string_using_backtrace {
         res += " at ";
         res += filename;
         res += ':';
-        res += boost::lexical_cast<boost::array<char, 40> >(line).data();
+        res += boost::stacktrace::detail::to_dec_array(line).data();
         return true;
     }
 

include/boost/stacktrace/detail/location_from_symbol.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // Distributed under the Boost Software License, Version 1.0. (See
 // accompanying file LICENSE_1_0.txt or copy at
@@ -28,7 +28,7 @@ public:
     explicit location_from_symbol(const void* addr) BOOST_NOEXCEPT
         : dli_()
     {
-        if (!::dladdr(addr, &dli_)) {
+        if (!::dladdr(const_cast<void*>(addr), &dli_)) { // `dladdr` on Solaris accepts nonconst addresses
             dli_.dli_fname = 0;
         }
     }

include/boost/stacktrace/detail/pop_options.h

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // 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, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // 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, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // 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, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // 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

@@ -0,0 +1,46 @@
+// Copyright Antony Polukhin, 2016-2018.
+//
+// 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)
+
+#ifndef BOOST_STACKTRACE_DETAIL_TO_DEC_ARRAY_HPP
+#define BOOST_STACKTRACE_DETAIL_TO_DEC_ARRAY_HPP
+
+#include <boost/config.hpp>
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#   pragma once
+#endif
+
+#include <boost/array.hpp>
+
+namespace boost { namespace stacktrace { namespace detail {
+
+// We do not use boost::lexical_cast in this function to reduce module dependencies
+inline boost::array<char, 40> to_dec_array(std::size_t value) BOOST_NOEXCEPT {
+    boost::array<char, 40> ret;
+    if (!value) {
+        ret[0] = '0';
+        ret[1] = '\0';
+        return ret;
+    }
+
+    std::size_t digits = 0;
+    for (std::size_t value_copy = value; value_copy; value_copy /= 10) {
+        ++ digits;
+    }
+
+    for (std::size_t i = 1; i <= digits; ++i) {
+        ret[digits - i] = '0' + (value % 10);
+        value /= 10;
+    }
+
+    ret[digits] = '\0';
+
+    return ret;
+}
+
+
+}}} // namespace boost::stacktrace::detail
+
+#endif // BOOST_STACKTRACE_DETAIL_TO_DEC_ARRAY_HPP

include/boost/stacktrace/detail/to_hex_array.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // 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

@@ -0,0 +1,29 @@
+// Copyright Antony Polukhin, 2016-2018.
+//
+// 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)
+
+#ifndef BOOST_STACKTRACE_DETAIL_TRY_DEC_CONVERT_HPP
+#define BOOST_STACKTRACE_DETAIL_TRY_DEC_CONVERT_HPP
+
+#include <boost/config.hpp>
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#   pragma once
+#endif
+
+#include <cstdlib>
+
+namespace boost { namespace stacktrace { namespace detail {
+
+// We do not use boost::lexical_cast in this function to reduce module dependencies
+inline bool try_dec_convert(const char* s, std::size_t& res) BOOST_NOEXCEPT {
+    char* end_ptr = 0;
+    res = std::strtoul(s, &end_ptr, 10);
+    return *end_ptr == '\0';
+}
+
+
+}}} // namespace boost::stacktrace::detail
+
+#endif // BOOST_STACKTRACE_DETAIL_TRY_DEC_CONVERT_HPP

include/boost/stacktrace/detail/unwind_base_impls.hpp

@@ -1,4 +1,4 @@
-// Copyright Antony Polukhin, 2016-2017.
+// Copyright Antony Polukhin, 2016-2018.
 //
 // 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 2015-2017 Antony Polukhin.
+// Copyright 2015-2018 Antony Polukhin.
 //
 // Distributed under the Boost Software License, Version 1.0.
 // (See accompanying file LICENSE_1_0.txt

meta/libraries.json

@@ -8,6 +8,7 @@
     "Antony Polukhin <antoshkka -at- gmail.com>"
   ],
   "description": "Gather, store, copy and print backtraces.",
+  "std": [ "proposal" ],
   "category": [
     "System", "Correctness"
   ]

test/Jamfile.v2

@@ -182,6 +182,7 @@ test-suite stacktrace_tests
         : windbg_cached_lib_threaded_com_st ]
 
     [ run test_void_ptr_cast.cpp ]
+    [ run test_num_conv.cpp ]
   ;
 
 # Assuring that examples compile and run. Adding sources from `examples` directory to the `type_index` test suite.

test/test_num_conv.cpp

@@ -0,0 +1,71 @@
+// Copyright Antony Polukhin, 2016-2018.
+//
+// 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 <boost/stacktrace/detail/to_dec_array.hpp>
+#include <boost/stacktrace/detail/to_hex_array.hpp>
+#include <boost/stacktrace/detail/try_dec_convert.hpp>
+
+#include <boost/core/lightweight_test.hpp>
+#include <string>
+#include <iostream>
+
+
+void test_to_hex_array() {
+    const void* ptr = 0;
+    BOOST_TEST(std::string(boost::stacktrace::detail::to_hex_array(ptr).data()).find("0x0") != std::string::npos);
+
+    ptr = reinterpret_cast<const void*>(0x10);
+    BOOST_TEST(std::string(boost::stacktrace::detail::to_hex_array(ptr).data()).find("10") != std::string::npos);
+
+    ptr = reinterpret_cast<void*>(0x19);
+    BOOST_TEST(std::string(boost::stacktrace::detail::to_hex_array(ptr).data()).find("19") != std::string::npos);
+
+    ptr = reinterpret_cast<void*>(0x999999);
+    BOOST_TEST(std::string(boost::stacktrace::detail::to_hex_array(ptr).data()).find("999999") != std::string::npos);
+}
+
+void test_to_dec_array() {
+    BOOST_TEST_EQ(std::string(boost::stacktrace::detail::to_dec_array(0).data()), std::string("0"));
+    BOOST_TEST_EQ(std::string(boost::stacktrace::detail::to_dec_array(10).data()), std::string("10"));
+    BOOST_TEST_EQ(std::string(boost::stacktrace::detail::to_dec_array(19).data()), std::string("19"));
+    BOOST_TEST_EQ(std::string(boost::stacktrace::detail::to_dec_array(999999).data()), std::string("999999"));
+}
+
+void test_try_dec_convert() {
+    std::size_t res = 0;
+
+    BOOST_TEST(boost::stacktrace::detail::try_dec_convert("0", res));
+    BOOST_TEST(res == 0);
+
+    BOOST_TEST(boost::stacktrace::detail::try_dec_convert("+0", res));
+    BOOST_TEST(res == 0);
+
+    BOOST_TEST(boost::stacktrace::detail::try_dec_convert("10", res));
+    BOOST_TEST(res == 10);
+
+    BOOST_TEST(boost::stacktrace::detail::try_dec_convert("19", res));
+    BOOST_TEST(res == 19);
+
+    BOOST_TEST(boost::stacktrace::detail::try_dec_convert("+19", res));
+    BOOST_TEST(res == 19);
+
+    BOOST_TEST(boost::stacktrace::detail::try_dec_convert("9999", res));
+    BOOST_TEST(res == 9999);
+
+    BOOST_TEST(!boost::stacktrace::detail::try_dec_convert("q", res));
+    BOOST_TEST(!boost::stacktrace::detail::try_dec_convert("0z", res));
+    BOOST_TEST(!boost::stacktrace::detail::try_dec_convert("0u", res));
+    BOOST_TEST(!boost::stacktrace::detail::try_dec_convert("+0u", res));
+}
+
+
+int main() {
+    test_to_hex_array();
+    test_to_dec_array();
+    test_try_dec_convert();
+
+    return boost::report_errors();
+}