vasnprintf: Correct handling of unconvertible wide string arguments.

[gnulib.git] / ChangeLog

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 2010-04-10  Bruno Haible  <bruno@clisp.org>
 
+       vasnprintf: Correct handling of unconvertible wide string arguments.
+       * lib/vasnprintf.c (MAX_ROOM_NEEDED): New function, extracted from
+       VASNPRINTF.
+       (VASNPRINTF): Use it. After snprintf failed, allocate more memory only
+       if HAVE_SNPRINTF_RETVAL_C99 is false and the allocated memory is
+       smaller than the expected maximum need for the directive. Set errno to
+       EILSEQ, not EINVAL, when the directive is 'c' or 's'.
+       (local_strnlen, local_wcslen, local_wcsnlen): Update conditions.
+       * m4/vasnprintf.m4 (gl_PREREQ_VASNPRINTF): Require AC_C_INLINE and
+       gl_SNPRINTF_RETVAL_C99. Define HAVE_SNPRINTF_RETVAL_C99.
+       * modules/vasnprintf (Files): Add m4/printf.m4.
+       Reported by Jarno Rajahalme <jarno.rajahalme@nsn.com>.
+
+2010-04-10  Bruno Haible  <bruno@clisp.org>
+
        vasnprintf: Fix crash in %ls directive.
        * lib/vasnprintf.c (VASNPRINTF): Don't abort when a unconvertible wide
        string is passed as argument to %ls, with no precision and no width.