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Re: Does the LD --wrap feature work for library internal references?
Hello Nick,
On 10/01/2019 12:13, Nick Clifton wrote:
Is this a bug or a feature?
Well I would have to say "bug", although I think that it is really a case
of expecting too much of a feature that was really only intended to catch
ordinary function calls.
I have no idea how to fix it however, so maybe the best that we can is to
update the documentation....
from the documentation
"Use a wrapper function for symbol. Any undefined reference to symbol
will be resolved to __wrap_symbol. Any undefined reference to
__real_symbol will be resolved to symbol. "
it is absolutely not clear that function pointer references are anything
special and are not covered by this mapping. I am not sure what is
expected to work. There are not that many tests in the test suite. Maybe
this:
"Use a wrapper function for all direct calls to symbol. Any direct
function call to symbol will be resolved to __wrap_symbol. Any direct
function call to __real_symbol will be resolved to symbol. Indirect
function calls will not be replaced for example."
Would it be difficult to catch also indirect function calls?
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