Messages in this thread | | | Subject | Re: [PATCH] vsprintf: make %pV handling compatible with kasprintf() | From | Joe Perches <> | Date | Mon, 05 Mar 2012 09:02:22 -0800 |
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On Mon, 2012-03-05 at 16:49 +0000, Jan Beulich wrote: > kasprintf() (and potentially other functions that I didn't run across > so far) want to evaluate argument lists twice. Caring to do so for the > primary list is obviously their job, but they can't reasonably be > expected to check the format string for instances of %pV, which however > need special handling too: On architectures like x86-64 (as opposed to > e.g. ix86), using the same argument list twice doesn't produce the > expected results, as an internally managed cursor gets updated during > the first run. > > Fix the problem by always acting on a copy of the original list when > handling %pV.
Wouldn't stable need this too?
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