NS2中最讨厌的莫过于Segmentation Fault，可以说是Faint to Death啊.
今天调试NAM（最近我可能会推出有关的开源软件，请稍候）的时候，就遇到这个问题，想想一定是可以用GDB调试的，于是查了一下，下面是方法。
在Makefile里找到
CCOPT = -Wall
加上
CCOPT = -Wall -g
然后重新make一遍。
启动GDB
gdb xxx （这里就没有参数了，可以参考看看怎么带参数）
(gdb) run
Starting program: /home/fang/ns-allinone-2.31/nam-1.13/nam
Program received signal SIGSEGV, Segmentation fault.
0x4034e6f4 in __after_morecore_hook () from /lib/libc.so.6
错误了，没有关系，输入bt（这个命令...）
#0 0x4034e6f4 in __after_morecore_hook () from /lib/libc.so.6
#1 0x0807e028 in EditView::cmdDeleteObj (this=0x8388980, cx=549.78125,
cy=597.90625) at editview.cc:809
#2 0x0807f35f in EditView::command (cd=0x8388980, tcl=0x826dc80, argc=4,
argv=0xbfffb98c) at editview.cc:204
#3 0x08141d2c in TclInvokeStringCommand ()
#4 0x0814383b in TclEvalObjvInternal ()
#5 0x0816de67 in TclExecuteByteCode ()
#6 0x08171bb8 in TclCompEvalObj ()
#7 0x081448a4 in Tcl_EvalObjEx ()
#8 0x08153a0e in Tcl_SwitchObjCmd ()
#9 0x0814383b in TclEvalObjvInternal ()
#10 0x0816de67 in TclExecuteByteCode ()
#11 0x08171bb8 in TclCompEvalObj ()
#12 0x0819a5c5 in TclObjInterpProc ()
#13 0x0819a9d9 in TclProcInterpProc ()
#14 0x0809d080 in OTclDispatch (cd=0x8372700, in=0x826dc80, argc=4,
argv=0xbfffc76c) at otcl.c:434
#15 0x08141d2c in TclInvokeStringCommand ()
#16 0x0814383b in TclEvalObjvInternal ()
#17 0x08143dbd in Tcl_EvalEx ()
#18 0x0812b688 in Tk_BindEvent ()
#19 0x0812f953 in TkBindEventProc ()
---Type <return> to continue, or q <return> to quit---
这样就找到具体是何处出现了错误，排错就要靠自己了。 |
