(gdb) up
#1  0x00005555562665f5 in leveldb::ReadBlock (file=0x7fff4c00b430, options=..., handle=..., result=0x7fff539df198) at ./src/leveldb/table/format.cc:88
88          const uint32_t crc = crc32c::Unmask(DecodeFixed32(data + n + 1));
(gdb) p contents.size_
$1 = 4120
(gdb) p contents.data_
$2 = 0x7fff902f6116 ""
(gdb) p n
$3 = 4115
(gdb) p data
$4 = 0x7fff902f6116 ""
(gdb)