g++, I'm not able to produce debug info for some classes
Ian Lance Taylor
Wed Jan 26 16:22:00 GMT 2011
"Vyacheslav V. Yurkov" <firstname.lastname@example.org> writes:
>> I don't fully grasp your comment about objdump. A type like class X
>> would not have an address. The objdump program does not dump debugging
> It does, objdump with -g option displays debug information from object file.
Well, OK, but that doesn't work for DWARF, and everybody these days
should be using DWARF. Actually I would like that option to work for
DWARF but nobody has implemented it.
>> Note that in general you need to have a variable of type X before gdb
>> can tell you anything about it.
> Actually I have one, but I don't need to.
> Gdb must be able to display class members without a variable of this class.
But gcc won't generate debugging information for a class if there are no
actual instances of the class. Otherwise C++ .o files would be
gargantuan, since they would have to contain debug info for every class
defined in every included .h file.
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