Output from Make when I compile @shyouhei's ruby version

output.txt

	CC = clang
	LD = ld
	LDSHARED = clang -dynamic -bundle
	CFLAGS = -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wno-tautological-compare -Wno-parentheses-equality -Wno-constant-logical-operand -Wno-self-assign -Wunused-variable -Werror=implicit-int -Werror=pointer-arith -Werror=write-strings -Werror=declaration-after-statement -Werror=shorten-64-to-32 -Werror=implicit-function-declaration -Werror=division-by-zero -Werror=deprecated-declarations -Werror=extra-tokens   -pipe
	XCFLAGS = -D_FORTIFY_SOURCE=2 -fstack-protector -fno-strict-overflow -fvisibility=hidden -DRUBY_EXPORT -fPIE
	CPPFLAGS = -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT   -I. -I.ext/include/x86_64-darwin16 -I./include -I. -I./enc/unicode/data/8.0.0
	DLDFLAGS = -Wl,-undefined,dynamic_lookup -Wl,-multiply_defined,suppress -fstack-protector -Wl,-u,_objc_msgSend -Wl,-pie -framework CoreFoundation
	SOLIBS = -lgmp
Apple LLVM version 8.0.0 (clang-800.0.42.1)
Target: x86_64-apple-darwin16.1.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin
translating probes probes.d
. ./vm_opts.h
generating id.h
id.h updated
generating opt_sc.inc
generating optinsn.inc
generating optunifs.inc
generating insns.inc
generating insns_info.inc
generating vmtc.inc
generating vm.inc
generating node_name.inc
generating known_errors.inc
known_errors.inc updated
generating vm_call_iseq_optimized.inc
./revision.h updated
/usr/local/opt/ruby/bin/ruby --disable=gems ./tool/gen_dummy_probes.rb ./probes.d > probes.dmyh
compiling main.c
compiling dmydln.c
compiling miniinit.c
compiling dmyext.c
generating miniprelude.c
miniprelude.c updated
compiling miniprelude.c
compiling array.c
compiling bignum.c
compiling class.c
compiling compar.c
compiling compile.c
compiling complex.c
compiling cont.c
compiling debug.c
compiling deoptimize.c
In file included from deoptimize.c:23:
./deoptimize.h:76:20: warning: unknown attribute 'leaf' ignored [-Wunknown-attributes]
    __attribute__((leaf));
                   ^
1 warning generated.
compiling dir.c
compiling dln_find.c
compiling encoding.c
compiling enum.c
compiling enumerator.c
compiling error.c
compiling eval.c
compiling file.c
compiling gc.c
compiling hash.c
compiling inits.c
compiling io.c
compiling iseq.c
In file included from iseq.c:25:
./deoptimize.h:76:20: warning: unknown attribute 'leaf' ignored [-Wunknown-attributes]
    __attribute__((leaf));
                   ^
1 warning generated.
compiling load.c
compiling marshal.c
compiling math.c
compiling node.c
compiling numeric.c
compiling object.c
compiling optimize.c
In file included from optimize.c:23:
./optimize.h:57:20: warning: unknown attribute 'leaf' ignored [-Wunknown-attributes]
    __attribute__((leaf));
                   ^
./optimize.h:86:20: warning: unknown attribute 'leaf' ignored [-Wunknown-attributes]
    __attribute__((leaf));
                   ^
./optimize.h:117:20: warning: unknown attribute 'leaf' ignored [-Wunknown-attributes]
    __attribute__((leaf));
                   ^
./optimize.h:129:20: warning: unknown attribute 'leaf' ignored [-Wunknown-attributes]
    __attribute__((leaf));
                   ^
./optimize.h:139:20: warning: unknown attribute 'leaf' ignored [-Wunknown-attributes]
    __attribute__((leaf));
                   ^
In file included from optimize.c:24:
./deoptimize.h:76:20: warning: unknown attribute 'leaf' ignored [-Wunknown-attributes]
    __attribute__((leaf));
                   ^
optimize.c:252:16: error: implicit conversion loses integer precision: 'const VALUE' (aka 'const unsigned long') to 'int'
      [-Werror,-Wshorten-64-to-32]
        return ptr[2];
        ~~~~~~ ^~~~~~
optimize.c:272:16: error: implicit conversion loses integer precision: 'const VALUE' (aka 'const unsigned long') to 'int'
      [-Werror,-Wshorten-64-to-32]
        return ptr[2];
        ~~~~~~ ^~~~~~
optimize.c:434:34: error: implicit conversion loses integer precision: 'const VALUE' (aka 'const unsigned long') to 'enum ruby_vminsn_type'
      [-Werror,-Wshorten-64-to-32]
    enum ruby_vminsn_type insn = argv[0];
                          ~~~~   ^~~~~~~
optimize.c:793:26: error: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Werror,-Wshorten-64-to-32]
    int argc   = p->argc + m;
        ~~~~     ~~~~~~~~^~~
optimize.c:812:20: error: implicit conversion loses integer precision: 'long' to 'int' [-Werror,-Wshorten-64-to-32]
    int len    = n + m;
        ~~~      ~~^~~
6 warnings and 5 errors generated.
make: *** [optimize.o] Error 1