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Tom Lane f489b480f4 Fix contrib/seg to be more wary of long input numbers. ... seg stores the number of significant digits in an input number in a "char" field. If char is signed, and the input is more than 127 digits long, the count can read out as negative causing seg_out() to print garbage (or, if you're really unlucky, even crash). To fix, clamp the digit count to be not more than FLT_DIG. (In theory this loses some information about what the original input was, but it doesn't seem like useful information; it would not survive dump/restore in any case.) Also, in case there are stored values of the seg type containing bad data, add a clamp in seg_out's restore() subroutine. Per bug #17725 from Robins Tharakan. It's been like this forever, so back-patch to all supported branches. Discussion: https://postgr.es/m/17725-0a09313b67fbe86e@postgresql.org		3 years ago
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seg.sql	Fix contrib/seg to be more wary of long input numbers.	3 years ago