Hello,
I am having a problem when using gcc 3.4.6. My code was compiled earlier
using gcc 3.2.2 with the -g option.
I was able to print the addess of any symbol or do a "ptype" on any symbol
using gdb 6.4 with the generated
binary.
Now I compile the very same code using gcc 3.4.6 using the -g option again.
Here, I get an error saying
"There is no field/member named <symbol name>".
This very symbol was found when the code was compiled using gcc 3.2.2.
To solve this problem, I followed two workarounds - but I do not understand
why they worked with those
workarounds.
Workaround 1: I tried to compile the code with gcc 3.4.6 using -gstabs+
option instead of with -g. This
resulted in the symbols being found and I could proceed with debugging using
gdb 6.4 as before. No problems
at all.
Workaround 2 : I changed the order of linking the .o files to my resulting
binary. The .o files where the symbol
referencing was problematic were placed on top of the list of the object
files to be linked. Now when I debug
the resulting binary, things work perfectly again as it did earlier with the
older compiler.
I don't know why this is a problem. Is this a problem with giving the
compiler options or is it a linker problem ?
Or does it have to do with a problem of using the right debug formats
(stabs, dwarf).
Any help here will be highly appreciated. I've reached the dead end and do
not know how to proceed further.
Regards,
Kalpana Balaji
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