下面的程序由于seg故障而崩溃。我找不到理由。目前我所知道的是，对info()成员spdlog::get( "basic_logger" )->info( "\nLogging started..." );和spdlog::get( "basic_logger" )->info( "Logging finished." );的两个调用导致了问题（第一个导致了segfault，第二个导致了double free）。
一个最小的例子：

#include <chrono>
#include <exception>
#include <cstdio>
#include <fmt/core.h>
#include <fmt/chrono.h>
#include <spdlog/spdlog.h>
#include <spdlog/sinks/basic_file_sink.h>

int main( )
{
    spdlog::file_event_handlers handlers;

    handlers.after_open   = [ ]( const spdlog::filename_t filename, std::FILE* const stream )
                            {   // Comment this line out to see the error caused by the before_close callback
                                spdlog::get( "basic_logger" )->info( "\nLogging started..." );
                                fmt::print( stream, "\n[{}] [{}] Logging started...\n",
                                            std::chrono::system_clock::now( ), filename );
                            };

    handlers.before_close = [ ]( const spdlog::filename_t filename, std::FILE* const stream )
                            {
                                spdlog::get( "basic_logger" )->info( "Logging finished." );
                                fmt::print( stream, "[{}] [{}] Logging finished.\n",
                                            std::chrono::system_clock::now( ), filename );
                            };

    try
    {
        auto logger { spdlog::basic_logger_st( "basic_logger", "logs/basic-log.txt", true, handlers ) };
    }
    catch ( const std::exception& sx )
    {
        fmt::print( stderr, "\nSomething went wrong during program startup: log file init failed: {}\n\n",
                            sx.what( ) );
    }
}

错误：

Segmentation fault (core dumped)

还有：

free(): double free detected in tcache 2
Aborted (core dumped)

生成命令：

g++ -std=c++23 -O3 -march=westmere -Wall -Wextra -Wpedantic -Wconversion -Wsign-conversion -Wshadow -fwhole-program -DNDEBUG `pkg-config --cflags spdlog` `pkg-config --libs spdlog` Temp.cpp -o runTemp

对print的调用不会导致任何问题。但是，我想用上面看到的对info()的调用来替换它们，因为这样会记录更多的细节。