Re: debug/10466: Can't debug the first function in a C file that is included in another C file

[Steve Evans <stevee@zuken.co.uk>]

The following reply was made to PR debug/10466; it has been noted by GNATS.

From: Steve Evans <stevee@zuken.co.uk>
To: drow@sources.redhat.com, chrisha@zuken.co.uk, gcc-bugs@gcc.gnu.org,
        gcc-prs@gcc.gnu.org, marcusb@zuken.co.uk, nobody@gcc.gnu.org,
        stevee@zuken.co.uk, gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: debug/10466: Can't debug the first function in a C file that is included in another C file
Date: 25 Apr 2003 09:53:43 +0100

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 On 25 Apr 2003, drow@sources.redhat.com wrote:
 
 >Synopsis: Can't debug the first function in a C file that is included
 >in another C file
 >
 >State-Changed-From-To: open->feedback
 >State-Changed-By: drow
 >State-Changed-When: Fri Apr 25 02:18:24 2003
 >State-Changed-Why:
 >Please see the bug reporting instructions on gcc.gnu.org.
 >Could you supply a small testcase?
 >
 >http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10466
 
 Ok. Enclosed are two files, foo.c and bar.c. Compile foo.c, which
 #includes "bar.c"  as:
 
   gcc -f -fPIC foo.c
 
 Note that since reporting the bug I have discovered that it only
 occurs when compiled with -fPIC. I attempted  to add this information
 to the bug report, but can't edit a report when logged on as guest and
 there doesn't seem to be any way of creating a new login ID.
 
 The run the debugger on it and attempt to break in the function bar,
 which is the first function in bar.c:
 
 ,----
 | stevee@gorbag:MY CLONE> gdb ./a.out
 | GNU gdb 5.3
 | Copyright 2002 Free Software Foundation, Inc.
 | GDB is free software, covered by the GNU General Public License, and you are
 | welcome to change it and/or 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.
 | This GDB was configured as "sparc-sun-solaris2.6"...
 | (gdb) b bar
 | Breakpoint 1 at 0x10aa8
 | (gdb) b bar2
 | Breakpoint 2 at 0x10aec: file bar.c, line 13.
 | (gdb) r
 | Starting program: /tmp/a.out 
 | foo
 | 
 | Breakpoint 1, 0x00010aa8 in bar ()
 | (gdb) l
 | 1       #include <stdio.h>
 | 2
 | 3       extern void foo(void);
 | 4       extern int bar(void);
 | 5       extern int bar2(void);
 | 6
 | 7       int main()
 | 8       {
 | 9           foo();
 | 10          bar();
 | (gdb) 
 `----
 
 Note that the function bar2 which exists in the same source file can
 have a break point added successfully.
 
 Thanks for any help with this problem.
 
 
 --=-=-=
 Content-Type: application/octet-stream
 Content-Disposition: attachment; filename=foo.c
 
 #include <stdio.h>
 
 extern void foo(void);
 extern int bar(void);
 extern int bar2(void);
 
 int main()
 {
     foo();
     bar();
     bar2();
 
     return 0;
 }
 
 void foo()
 {
     printf( "foo\n" );
 }
 
 #include "bar.c"
 
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 Content-Type: application/octet-stream
 Content-Disposition: attachment; filename=bar.c
 
 
 int
 bar()
 {
     printf( "bar\n" );
 
     return 0;
 }
 
 int
 bar2()
 {
     printf( "bar2\n" );
 
     return 2;
 }
 
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 Steve
 - -- 
 ____________________________________________________________________________
 Steve Evans,
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