https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89452
--- Comment #6 from Baykov Nikita <nknikita at niisi dot ras.ru> ---
There is one more issue.
ISO/IEC 14882:2017(E) and N4800 specify that seekpos(sp, which) and
seekoff(off_type(sp), ios_base::beg, which) should be equivalent, but it seems
that they are not equivalent in libstdc++ implementation for GCC.
The following code works fine for me:
stringbuf sb("abcdefgh", ios_base::in);
assert (sb.pubseekoff(3, ios_base::beg, ios_base::in|ios_base::out) == -1);
The following code fails:
stringbuf sb("abcdefgh", ios_base::in);
assert (sb.pubseekpos(3, ios_base::in|ios_base::out) == -1);
