build v7.10.2 failed with gcc 11/12

[meilihao]

Expected behavior

build ok

Actual behavior

errors:

• error: format '%u' expects argument of type 'unsigned int', but argument 3 has type 'std::reference_wrapper<unsigned int>' [-Werror=format=]
• error: no match for 'operator=' (operand type are 'std::reference_wrapper<unsigned int>' and 'int')

Steps to reproduce the behavior

env:

• oracle linux 7.9 amd64
• gcc 11/12

# cd rocksdb-7.10.2
# make dbg

[meilihao]

tested gcc 9, the same problem.

[meilihao]

build 7.10.2 + gcc 12 + make all get other error: '__Y' may by use uninitialized [-Werror=maybe-uninitialized]