c – 主要部分之外的分段故障

2023年4月1日 209次阅读

我正在开发一个大型的混合C / Fortran项目.目前,可执行文件会在启动之前立即进行段错误,然后才能到达主要的AFAICT.实际上在加载共享库之前.

一些输出：

$./myprog
Segmentation fault (core dumped)
$gdb ./myprog core
GNU gdb (Ubuntu 7.7-0ubuntu3) 7.7
Copyright (C) 2014 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-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./myprog...done.
[New LWP 9194]
bt
Core was generated by `./myprog'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x0000000000000001 in ?? ()
(gdb) bt
#0  0x0000000000000001 in ?? ()
#1  0x00007fff08fa02ca in ?? ()
#2  0x0000000000000000 in ?? ()

也：

$LD_DEBUG=all ./myprog
Segmentation fault (core dumped)

$ldd ./myprog
    linux-vdso.so.1 =>  (0x00007fffd81fe000)
    libxerces-c-3.1.so => /usr/lib/x86_64-linux-gnu/libxerces-c-3.1.so (0x00007f774738e000)
    libxml-security-c.so.17 => /usr/lib/x86_64-linux-gnu/libxml-security-c.so.17 (0x00007f7747083000)
    libblas.so.3 => /usr/lib/libblas.so.3 (0x00007f7746ab6000)
    liblapack.so.3 => /usr/lib/liblapack.so.3 (0x00007f774631a000)
    libboost_serialization.so.1.54.0 => /usr/lib/x86_64-linux-gnu/libboost_serialization.so.1.54.0 (0x00007f77460af000)
    libboost_filesystem.so.1.54.0 => /usr/lib/x86_64-linux-gnu/libboost_filesystem.so.1.54.0 (0x00007f7745e98000)
    libboost_system.so.1.54.0 => /usr/lib/x86_64-linux-gnu/libboost_system.so.1.54.0 (0x00007f7745c94000)
    libhdf5_cpp.so.7 => /usr/lib/x86_64-linux-gnu/libhdf5_cpp.so.7 (0x00007f7745a43000)
    libhdf5.so.7 => /usr/lib/x86_64-linux-gnu/libhdf5.so.7 (0x00007f77455a6000)
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f7745388000)
    libgfortran.so.3 => /usr/lib/x86_64-linux-gnu/libgfortran.so.3 (0x00007f774506f000)
    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f7744e6a000)
    libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f7744b5f000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f7744859000)
    libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f7744641000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f774427b000)
    libcrypto.so.1.0.0 => /lib/x86_64-linux-gnu/libcrypto.so.1.0.0 (0x00007f7743ea1000)
    libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f7743c87000)
    /lib64/ld-linux-x86-64.so.2 (0x00007f7756ed5000)
    libquadmath.so.0 => /usr/lib/x86_64-linux-gnu/libquadmath.so.0 (0x00007f7743a49000)

可以看出,它依赖于相当数量的库,但在LD加载其中任何一个之前崩溃.我不知道下一步该去哪儿.有什么建议？

最佳答案 这是由使用-fPIC编译目标文件和使用-shared编译可执行文件引起的.

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