The name() returned by std::type_info is implementation-dependant. In
practice, it is typically the type's mangled name. For GCC and clang, it
is possible to use abi::__cxa_demangle to demangle the name at runtime
while formatting a string.
If this poses any compatibility problem on other platforms, we can
fallback to using name() directly.
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ib80babe4039c91ce6fdf6d9a9442c31645a43b08
#include <common/macros.hpp>
#include <common/macros.hpp>
+#include <string>
+#include <cxxabi.h>
+
DIAGNOSTIC_PUSH
DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT
DIAGNOSTIC_IGNORE_DUPLICATED_BRANCHES
DIAGNOSTIC_PUSH
DIAGNOSTIC_IGNORE_SUGGEST_ATTRIBUTE_FORMAT
DIAGNOSTIC_IGNORE_DUPLICATED_BRANCHES
#include <vendor/fmt/core.h>
DIAGNOSTIC_POP
#include <vendor/fmt/core.h>
DIAGNOSTIC_POP
+template <>
+struct fmt::formatter<std::type_info> : fmt::formatter<std::string> {
+ template <typename FormatCtx>
+ typename FormatCtx::iterator format(const std::type_info& type_info, FormatCtx& ctx)
+ {
+ int status;
+ auto demangled_name = abi::__cxa_demangle(type_info.name(), nullptr, 0, &status);
+ auto it = status == 0 ? fmt::formatter<std::string>::format(demangled_name, ctx) :
+ fmt::formatter<std::string>::format(type_info.name(), ctx);
+
+ free(demangled_name);
+ return it;
+ }
+};
+
#endif /* LTTNG_FORMAT_H */
#endif /* LTTNG_FORMAT_H */