Files
glib/glib
Jamie Bainbridge ffc00caa73 gutils: Avoid segfault in g_get_user_database_entry
g_get_user_database_entry() uses variable pwd to store the contents of
the call to getpwnam_r(), then capitalises the first letter of pw_name
with g_ascii_toupper (pw->pw_name[0]).

However, as per the getpwnam manpage, the result of that call "may point
to a static area". When this happens, GLib is trying to edit static
memory which belongs to a shared library, so segfaults.

Instead, copy pw_name off to a temporary variable, set uppercase on
that variable, and use the variable to join into the desired string.
Free the new variable after it is no longer needed.

Signed-off-by: Jamie Bainbridge <jamie.bainbridge@gmail.com>
2022-01-27 10:14:14 -06:00
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