jp2uc/up2jc: avoid crash due to invalid pointerHEADgithub/mastergithub/mainmastermain

Commit 4356ccd02c9c ("towupper/towlower: handle Turkic language special
casing") changed the locale pointer in calls to towctrans_l from a NULL
pointer to LC_GLOBAL_LOCALE, which is defined as -1.

Unfortunately jp2uc_l/up2jc_l just expect a NULL or non-NULL pointer,
so LC_GLOBAL_LOCALE as input is derefenced later on and the call crashes.

To fix this problem, handle LC_GLOBAL_LOCALE just as if a NULL pointer
has been passed to the function.  Keep the NULL pointer handling intact
for backward compatibility.

Fixes: 4356ccd02c9c ("towupper/towlower: handle Turkic language special casing")
Reported-by: Christophe Lyon <christophe.lyon.oss@gmail.com>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

0 files changed, 0 insertions, 0 deletions