[src/vasprintf.c] Fixed overflow checking in partition_number().

In details:
  * The computation of the number of characters to be written could
    be incorrect by 1 when the thousands separator was not empty.
    However, in the 3.1 branch (without additional patches), this
    value is currently only used for overflow checking, so that this
    bug could have only very little effect (contrary to the trunk).
  * When the int and long types have the same size, the code assumed
    "wrapping behavior in two's complement". But this is actually
    undefined behavior in ISO C; in practice, a smart compiler may
    have ignored "total < 0" tests, because total is computed with
    sums of non-negative integers.
(merged changesets r11513,11515-11516 from the trunk)

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/branches/3.1@11538 280ebfd0-de03-0410-8827-d642c229c3f4

0 files changed, 0 insertions, 0 deletions