heap-buffer-overflow in token_stream_peek
==14476==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x602000009953
READ of size 1 at 0x602000009953 thread T0
SCARINESS: 12 (1-byte-read-heap-buffer-overflow)
#0 0x45f9e0 in token_stream_peek glib/glib/gvariant-parser.c:279:10
#1 0x45ccb9 in parse glib/glib/gvariant-parser.c:2264:7
#2 0x45fda5 in tuple_parse glib/glib/gvariant-parser.c:1104:15
#3 0x45cd1b in parse glib/glib/gvariant-parser.c:2268:14
#4 0x45fda5 in tuple_parse glib/glib/gvariant-parser.c:1104:15
#5 0x45cd1b in parse glib/glib/gvariant-parser.c:2268:14
#6 0x45c80d in g_variant_parse glib/glib/gvariant-parser.c:2383:14
2-bytes test case: ((
.