2 * Copyright (C) 2022 Jérémie Galarneau <jeremie.galarneau@efficios.com>
4 * SPDX-License-Identifier: LGPL-2.1-only
10 #include <common/macros.hpp>
17 DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT
18 DIAGNOSTIC_IGNORE_DUPLICATED_BRANCHES
19 #include <vendor/fmt/core.h>
22 #include <common/make-unique-wrapper.hpp>
25 * Due to a bug in g++ < 7.1, this specialization must be enclosed in the fmt namespace,
26 * see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56480.
30 struct formatter<std::type_info> : formatter<std::string> {
31 template <typename FormatContextType>
32 typename FormatContextType::iterator format(const std::type_info& type_info,
33 FormatContextType& ctx) const
37 * The documentation of __cxa_demangle mentions the returned string is allocated
38 * using malloc (not new), hence the use of lttng::memory::free.
40 const auto demangled_name = lttng::make_unique_wrapper<char, lttng::memory::free>(
41 abi::__cxa_demangle(type_info.name(), nullptr, nullptr, &status));
43 auto it = status == 0 ? formatter<std::string>::format(demangled_name.get(), ctx) :
44 formatter<std::string>::format(type_info.name(), ctx);
51 template <typename... FormattingArguments>
52 std::string format(FormattingArguments&&...args)
55 return fmt::format(std::forward<FormattingArguments>(args)...);
56 } catch (const fmt::format_error& ex) {
57 return std::string("Failed to format string: ") += ex.what();
60 } /* namespace lttng */
62 #endif /* LTTNG_FORMAT_H */