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Re: Who is corinna?

On Jul 30 07:37, Bernd Prager wrote:
> On 7/29/2012 11:47 PM, Christopher Faylor wrote:
> >On Sun, Jul 29, 2012 at 01:07:09PM -0400, Bernd Prager wrote:
> >>I am trying to debug a compiled c++ program with gdb.
> >>
> >>When I start gdb it claims the symbols are loaded. When I try to list
> >>the source code I get:
> >>
> >>(gdb) list
> >>
> >>/home/corinna/src/cygwin/cygwin-1.7.15/cygwin-1.7.15-1/src/cygwin-1.7.15/winsup/cygwin/crt0.c:
> >>No such file or directory.
> >>         in
> >>/home/corinna/src/cygwin/cygwin-1.7.15/cygwin-1.7.15-1/src/cygwin-1.7.15/winsup/cygwin/crt0.c
> >>
> >>When I try to single step trough the program I get:
> >>
> >>(gdb) start
> >>Temporary breakpoint 1 at 0x401173
> >>Starting program: /home/bernd/Test/a.exe
> >>[New Thread 3820.0x8a0]
> >>[New Thread 3820.0x41c]
> >>
> >>Temporary breakpoint 1, 0x00401173 in main ()
> >>(gdb) next
> >>Single stepping until exit from function main,
> >>which has no line number information.
> >>0x004011c2 in _fu0___ZSt4cout ()
> >>
> >>Does anybody has an idea what is going on?
> >Sure looks like your program is not compiled with debugging information,
> >i.e., "gcc -g" was not used when compiling and linking the program.
> >
> >As to who Corrina is, here's a link:
> >
> >
> >
> Thank you. That was embarrassingly the case.
> Now to the root of my confusion: Autotools used to generate a
> stripped and a debug version.
> I could run the debugger: gdb .lib/a.exe and the debug information
> were there.
> That seems to fail now.
> The generated Makefile has a line that is commented:
> #am__append_1 = -Wall -Wextra -ggdb -O0
> am__append_2 = -O2
> Could that have anything to do with my missing debug information?

Definitely.  I suggest reading the `info gcc' pages.  They explain
all the options, including the -g debugging options.


Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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