strange behavior debugging with gdb.. need explanation

[ufmale]

I am trying to debug my code with gdb. However, the code seems to jump from one place and come back to where it supposed to be. I recompiled the code to ensure that the source code match the exec. Below you can see that the line

1945		readConfig(config_file,&config);

is hit twice. The first time it goes into main (which is not what it should have) and other time when the code actually reach that line. It also happens in other part of the code.
Can someone suggest me what to do or what explanation of this behaviour?

(gdb) b main
Breakpoint 1 at 0x804a42f: file producer.src/producer.c, line 1907.
(gdb) run
Starting program: /root/workspace/nano/Release/producer 
[Thread debugging using libthread_db enabled]

Breakpoint 1, main (argc=1, argv=0xbffff1a4) at producer.src/producer.c:1907
1907	{
Missing separate debuginfos, use: debuginfo-install glibc-2.12-2.i686 libgcc-4.4.4-2.fc13.i686
(gdb) n
1945		readConfig(config_file,&config);
(gdb) n
1909		int Code = 0; 
(gdb) n
1937		usage(argc,argv);
(gdb) n
1940		printf("\nproducer (v %s) \n\n", version_string);
(gdb) n

producer (v 4.01) 

1942		printf("test");
(gdb) n
1945		readConfig(config_file,&config);
(gdb)

[Rubberman]

I don't know what specificially is causing this, although a pointer error in your code can mung memory such that this can happen, in my experience. Also, note the error about missing debuginfos and the need to install the debuginfo-install package. You need to do that before you run gdb. It may (or may not) allow you to see better what is happening.