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Subjectmin/max and all that jazz
From
gcc has a warning option -Wsign-compare (not turned on by -Wall):

`-Wsign-compare'
Warn when a comparison between signed and unsigned values could
produce an incorrect result when the signed value is converted to
unsigned. This warning is also enabled by `-W'; to get the other
warnings of `-W' without this warning, use `-W -Wno-sign-compare'.

This might pick up some errors of the kind the new min/max macros
are trying to catch...

Duncan.

PS: please CC any comments to me, since I'm not subscribed to the list.
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