glib/fuzz_markup: Use-of-uninitialized-value in g_utf8_get_char_extended

Detailed report: https://oss-fuzz.com/testcase?key=6336979020021760 Project: glib Fuzzer: libFuzzerglibfuzzmarkup Fuzz target binary: fuzzmarkup Job Type: libfuzzermsanglib Platform Id: linux Crash Type: Use-of-uninitialized-value Crash Address: Crash State: gutf8getcharextended...

glib/fuzz_markup: Heap-buffer-overflow in fuzz_markup.c

Project: https://gitlab.gnome.org/GNOME/glib.git Detailed report: https://oss-fuzz.com/testcase?key=4818618314391552 Project: glib Fuzzer: aflglibfuzzmarkup Fuzz target binary: fuzzmarkup Job Type: aflasanglib Platform Id: linux Crash Type: Heap-buffer-overflow READ 1 Crash Address: 0x60300000014...