5

如果已使用条件 decalread 条件断点 

  (gdb) b handle.cpp:66 if ( (sn == 6092 && !strcmp(_name.c_str(),"HSI_IDX_DEF")) || (sn == 1251 && !strcmp(_name.c_str(),"SP_IDX_DEF")))

它每次都会命中，因为即使在两个错误的子条件之后，复杂条件每次都变为真。

(gdb) p  ( (sn == 6092 && !strcmp(_name.c_str(),"HSI_IDX_DEF")) || (sn == 1251 && !strcmp(_name.c_str(),"SP_IDX_DEF")))
    $10 = true
    (gdb) p (sn == 6092 && !strcmp(_name.c_str(),"HSI_IDX_DEF"))
    $11 = false
    (gdb) p  (sn == 1251 && !strcmp(_name.c_str(),"SP_IDX_DEF"))
    $12 = false

我的发行版

Linux lab-exchangeIn 2.6.32-279.el6.x86_64 #1 SMP Fri Jun 22 12:19:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

gdb 版本

 GNU gdb (GDB) Red Hat Enterprise Linux (7.2-56.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/>

.

gcc 版本：

Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.4.7 20120313 (Red Hat 4.4.7-3) (GCC)
4

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