[snprintf-announce] Portable snprintf version 2.2 available - a %c bug fixed

[Mark Martinec]

A new release 2.2 of portable snprintf routine is now available.
Most importantly it fixes a (possible) problem with %c conversion.

Available at:  http://www.ijs.si/software/snprintf/


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Here are the release notes for version 2.2:

  + BUG FIX: the %c conversion used a temporary variable that was
    no longer in scope when referenced, possibly causing
    incorrect resulting character;
  + BUG FIX: make precision and minimal field width unsigned to
    handle huge values (2^31 <= n < 2^32) correctly; also be more
    careful in the use of signed/unsigned/size_t internal
    variables -- probably more careful than many vendor
    implementations, but there may still be a case where huge
    values of str_m, precision or minimal field could cause
    incorrect behaviour;
  + use separate variables for signed/unsigned arguments, and for
    short/int, long, and long long argument lengths to avoid
    possible incompatibilities on certain computer architectures.
    Also use separate variable arg_sign to hold sign of a numeric
    argument, to make code more transparent;
  + some fiddling with zero padding and "0x" to make it Linux
    compatible;
  + systematically use macros fast_memcpy and fast_memset instead
    of case-by-case hand optimization; determine some breakeven
    string lengths for different architectures;
  + terminology change: format -> conversion specifier, C9x ->
    ISO/IEC 9899:1999 ("ISO C99"), alternative form -> alternate
    form, data type modifier -> length modifier;
  + several comments rephrased and new ones added;
  + make compiler not complain about 'credits' defined but not used;

Regards
   Mark Martinec

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