C++基本程序分段错误

Question

这是我的 CPP 计划

#include <iostream>

int main(int argc, char *argv[]){
     return 0;
}

编译和执行这个，会导致段错误：

[18:08 ~] > g++ test.cpp
[18:09 ~] > ./a.out
Segmentation fault

请问有人知道这个问题吗？ 非常感谢您的帮助。

以下是一些可能有用的细节：

[18:13 ~] > ldd a.out
 linux-vdso.so.1 =>  (0x00007fff3fdff000)
 libstdc++.so.6 => /usr/lib/gcc/x86_64-redhat-linux/3.4.6/libstdc++.so.6 (0x00007fc8f4a53000)
 libm.so.6 => /lib64/libm.so.6 (0x00007fc8f47ce000)
 libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007fc8f45b8000)
 libc.so.6 => /lib64/libc.so.6 (0x00007fc8f4225000)
 /lib64/ld-linux-x86-64.so.2 (0x00007fc8f4ca5000)

还有gdb：

[18:15 ~] > gdb ./a.out
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-60.el6)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from ...done.
(gdb) run
Starting program: a.out

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7bd48ec in std::ios_base::Init::Init() () from /usr/lib/gcc/x86_64-redhat-linux/3.4.6/libstdc++.so.6
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.107.el6.x86_64 libgcc-4.4.7-3.el6.x86_64
(gdb) bt
#0  0x00007ffff7bd48ec in std::ios_base::Init::Init() () from /usr/lib/gcc/x86_64-redhat-linux/3.4.6/libstdc++.so.6
#1  0x0000000000400831 in __static_initialization_and_destruction_0 (__initialize_p=1, __priority=65535) at /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../include/c++/3.4.6/iostream:77
#2  0x0000000000400873 in global constructors keyed to main() () at test.cpp:7
#3  0x0000000000400976 in __do_global_ctors_aux ()
#4  0x00000000004005a3 in _init ()
#5  0x00007fffffffe448 in ?? ()
#6  0x0000000000400905 in __libc_csu_init ()
#7  0x00007ffff7385c70 in __libc_start_main () from /lib64/libc.so.6
#8  0x0000000000400659 in _start ()
(gdb)

g++

[10:14 ~] > g++ -v
Reading specs from /usr/lib/gcc/x86_64-redhat-linux/3.4.6/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-languages=c,c++,f77 --disable-libgcj --host=x86_64-redhat-linux
Thread model: posix
gcc version 3.4.6 20060404 (Red Hat 3.4.6-19.el6)

最后一件事

[10:25 ~] > ls /usr/lib/gcc/x86_64-redhat-linux
3.4.6

谢谢。

Answer 1

很明显，您的问题是您的 g++ 安装已损坏。我从消息中看到您拥有 RHEL6，但不知何故拥有 3.4.6 版的 libstdc++。

我的 RHEL6 系统有 4.4.6 版本的 gcc、libstdc++ 等。我假设这个旧版本的 libstdc++ 与您的问题有关。

您安装了哪些版本的 gcc、g++ 和 libstdc++？从其他消息来看，您似乎有 4.4.7，但您是否恰好有多个版本或混合版本？

rpm -q gcc g++ libstdc++

另外，/usr/lib/gcc/x86_64-redhat-linux 下还有哪些目录？

ls /usr/lib/gcc/x86_64-redhat-linux

Answer 2

我认为你在安装 g++ 时遗漏了一些东西

Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.107.el6.x86_64 libgcc-4.4.7-3.el6.x86_64