C++ Typedefs and symbol tables
Andrew STUBBS
andrew.stubbs@st.com
Mon Aug 20 18:12:00 GMT 2007
Daniel Jacobowitz wrote:
> Symbols come from .debug_info and have type information. minsyms come
> from the ELF .symtab section, and do not.
Ah, OK. How do I determine this, and how do I get it to use the proper
symbols if it has chosen the wrong ones?
I know that the debug info contains the definition given in the source -
at least for one example I looked at, anyway. It couldn't have arrived
at the version given by 'info functions' without canonicalizing the
debug info, so I assume it must be using the (already canonical) minsyms
only.
> 2-3 typenames is not typical, in C++ programs. It added around 30%
> time in my testing.
Oh? I'm talking about converting something like
Int32 f(Bp,Int16)
to
int f(B*,short)
(where Bp is an example of a typedef), and only for parameters given to
breakpoint commands and the like.
There's only 3 types in that (four if you count the function type), and
breakpoint commands wouldn't come up _too_ often, so surely it couldn't
take that much time?
Surely we are talking at cross-purposes?
Andrew
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