尽管文件指针正确,但在fclose()期间的segfault

Segfault during fclose() despite correct file pointer

本文关键字:segfault fclose 但在 文件 指针      更新时间:2023-10-16
  • 在物体破坏期间持续发生;
  • fopen((和fclose((之前的文件指针值相同;
  • fclose((仅在对象驱动器中称为一次;
  • 该对象是静态创建的,并在范围末尾被破坏
  • 文件仅在一个线程中处理

文件打开:

logOutFile_fd = fopen(logOutFile,"w");
if (logOutFile_fd==NULL) {
  /* omitted */
}

文件关闭:

if (logOutFile_fd!=NULL) {
  fflush(logOutFile_fd);
  fclose(logOutFile_fd);
}

我用" -g3"编译,并通过GDB跑,这是完整的回溯:

#0  0x00007ffff6f8d3f8 in raise () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007ffff6f8effa in abort () from /lib64/libc.so.6
No symbol table info available.
#2  0x00007ffff6fcf6f9 in __libc_message () from /lib64/libc.so.6
No symbol table info available.
#3  0x00007ffff6fd7f4a in _int_free () from /lib64/libc.so.6
No symbol table info available.
#4  0x00007ffff6fdbc1c in free () from /lib64/libc.so.6
No symbol table info available.
#5  0x00007ffff6fc52c3 in fclose@@GLIBC_2.2.5 () from /lib64/libc.so.6
No symbol table info available.
#6  0x0000000000402733 in t_netInterface::~t_netInterface (this=0x7ffff5f50cf0, __in_chrg=<optimized out>) at connect.cpp:59
No locals.
#7  0x00000000004022fc in pthreadTask (pthData=0x7fffffffe070) at client.cpp:131
        netInterface = {id = 162, currTime = {tv_sec = 0, tv_usec = 0}, dbg_time_sync = {tv_sec = 0, tv_usec = 0}, dbg_time_prev = 0, dbg_time_now = 0, 
          dbg_time_dprev = 0, dbg_time_dnow = 0, dbg_ch0_len = 0, datems = 0, timeMarkSet = {0 <repeats 12 times>}, chunk = 0, chunk_ch = 0 '00', 
          chunk_dt = 0, chunk_H = 0 '00', chunk_L = 0 '00', fpd = 0x0, logOutFile = 0x0, logOutFile_fd = 0x7fffec038f30, 
          dataOutFile = 0x7fffec001c10 "(b", dataOutFile_fd = 0x7fffec03a580, globalLogFile_fd = 0x7fffec0009d0, dir0 = 0x7fffec001d20 "(b", sockfd = 11, 
          portno = 34000, serv_addr = {sin_family = 2, sin_port = 53380, sin_addr = {s_addr = 2717952192}, sin_zero = "00000000000000"}, 
          poll_d = {{fd = 11, events = 1, revents = 0}}, f_ret = 0, channelBuffers = 0x7fffec000920, channelBuffIter = 0x7fffec0008e0, 
          channelDataTypeH = 1284, valSigned = 0, dbgFlag = 0, dataPath = 0x7fffec006d50 "(b", addr_str = 0x7fffec002530 "192.168.0.162", 
          buffChar = 0x7fffec002d40 "(b", wasConnected = 0}
        data = 0x7fffffffe070
        out_buffer = 64
        in_buffer = {0 <repeats 8192 times>}
        pid = 162
        tid = 162
        logOutFile_fd = 0x7fffec038f30
        res = 1
        rcvDataSizeBytes = 0
        retv = 0
        cc = 2003
        active = 0
        uptimeSec = 27134
        globalLogName = 0x7fffec0008c0 "x"
        globalLogFile_fd = 0x7fffec0009d0
#8  0x00007ffff7328684 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#9  0x00007ffff705eefd in clone () from /lib64/libc.so.6
No symbol table info available.

我在做什么错?预先感谢。

编辑:我试图在周围调整换口具,现在看上去似乎就像是在类构造函数和destructor之间的某个位置的内存。我将重新完成一些事情,因此可以将问题视为关闭。无论如何,感谢您的时间。

fclose中的崩溃表明涉及的FILE数据结构已损坏,可能是由于程序中其他地方使用的无效指针。

您最好的选择可能是一个内存检查工具,例如Valgrind