build fail in opensuse 11.4 by clang 3.6.0

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What steps will reproduce the problem?
1. download latest memcached
2. run   CC=clang ./configure
3. run   make

What is the expected output? What do you see instead?

expected : success without error

I see:

clang -DHAVE_CONFIG_H -I.    -fprofile-arcs -ftest-coverage -g -O2 -Wall 
-Werror -pedantic -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls 
-MT memcached_debug-items.o -MD -MP -MF .deps/memcached_debug-items.Tpo -c -o 
memcached_debug-items.o `test -f 'items.c' || echo './'`items.c
items.c:1141:28: error: comparison of constant 256 with expression of type 
'uint8_t' (aka 'unsigned char') is always true 
[-Werror,-Wtautological-constant-out-of-range-compare]
    assert(it->slabs_clsid < LARGEST_ID);
           ~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
/usr/include/assert.h:86:5: note: expanded from macro 'assert'
  ((expr)                                                               \
    ^
1 error generated.
make[2]: *** [memcached_debug-items.o] Error 1
make[2]: Leaving directory `/root/tmp/memcached-1.4.24'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/root/tmp/memcached-1.4.24'
make: *** [all] Error 2



What version of the product are you using? On what operating system?

opensuse 11.4 
clang 3.6.0


Please provide any additional information below.

Original issue reported on code.google.com by wendal1985@gmail.com on 28 Apr 2015 at 9:39