gdb can not find source files compiled by cc

Question

I have a source file testcc.c which just print a "Hello, World", I compile it with cc as below

cc -g -o testcc testcc.c

it works fine when I run it. now I want to debug it with gdb with the following command.

gdb testcc

I can see the output from gdb.

GDB is free software and you are welcome to distribute copies of it under certain conditions; type "show copying" to see the conditions. There is absolutely no warranty for GDB; type "show warranty" for details. GDB 4.16 (sparc-sun-solaris2.6), Copyright 1996 Free Software Foundation, Inc...

But, When I try to set a breakpoint at line 5, I got the following message

(gdb) break 5
Breakpoint 1 at 0x10814: file /home/users/xxx/C, line 5.
(gdb)

The problem is /home/users/xxx/C is my current working directory, not the source file!

Then, I try to use the file:line-number options

(gdb) break testcc.c:5
No source file named testcc.c.

So, I include the full path for the file name as below

(gdb) break /home/users/xxx/testcc.c:5
No source file named /home/users/xxx/testcc.c.

I am confused, the file is there, why gdb can not find it? I also try to specify the directory to search for source files when starting gdb

gdb -d /home/users/xxx/C testcc

it still not work, what's the problem?

Is /home/users/xxx/C a real directory or have you mounted a Windows file system on your Solaris system ? — Paul R
– Paul R, Commented Nov 14, 2012 at 9:24
Do you see the message "Reading symbols from /path/to/your/cc/file...done." on startup? Also, GDB seems to be at version 7.4.1 on my Linux box, so 4.16 looks reeeaaally old to me... Finally, just to be sure, try gdb ./testcc (there might be another testcc in the path) — Sjlver
– Sjlver, Commented Nov 14, 2012 at 9:32
Try grabbing a more recent version of GDB from sunfreeware.com. I suspect your gdb, version 4.16 (sparc-sun-solaris2.6), is having trouble with the debugging information generated by your copy of gcc. — scottt
– scottt, Commented Nov 14, 2012 at 10:24
@Sjlver, I didn't see that message, I have tried gdb ./testcc, it doesn't work either. — zdd
– zdd, Commented Nov 14, 2012 at 10:32

zdd · Accepted Answer · 2012-11-15 04:16:08Z

2

After struggle for a whole day, I finally find that we should use dbx to debug program compiled by Sun cc compiler. here is the link said this.

http://www.cs.cmu.edu/~gilpin/tutorial/

answered Nov 15, 2012 at 4:16

zdd

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