On 10/13/2016 12:14 PM, Eric Blake wrote:
I think a configure test based on -Werror=format would be
sufficient


What we have now should work for GCC 2.0 and later, whereas -Werror=format is a much-newer GCC feature and so would be less portable.

if they are using some other compiler,
then chances are -Wformat does not work, therefore the problem cannot be
portably observed so there is nothing to work around

I am worried that other compilers might warn about it even without -Werror=format. (I'm not worried about GCC, as nobody uses GCC 1 any more.)

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