Comment 3 for bug 1929105

Tavis Ormandy reported that when converting from ISO-2022-JP-3 to UTF-8, the gconv module could trigger an assertion failure in iconv/skeleton.c if the second wide character in a two-wide-character sequence cannot be written to the output buffer during character set conversion.

If glibc is built with assertions, this assertion failure can typically be triggered by applications (such as mail clients) which use the glibc iconv subsystem for MIME character set processing.