Without the patch I'm getting the following error/s:
kcthread.cc:671:50: error: cannot initialize a parameter of type 'void *' with an rvalue of type 'int'
  while (!__sync_bool_compare_and_swap(&opq_, 0, 1)) {
                                                 ^
kcthread.cc:696:49: error: cannot initialize a parameter of type 'void *' with an rvalue of type 'int'
  return __sync_bool_compare_and_swap(&opq_, 0, 1);
--- a/kcthread.cc
+++ b/kcthread.cc
@@ -668,7 +668,7 @@ void SpinLock::lock() {
 #elif _KC_GCCATOMIC
   _assert_(true);
   uint32_t wcnt = 0;
-  while (!__sync_bool_compare_and_swap(&opq_, 0, 1)) {
+  while (!__sync_bool_compare_and_swap(&opq_, 0, (void *)1)) {
     if (wcnt >= LOCKBUSYLOOP) {
       Thread::chill();
     } else {
@@ -693,7 +693,7 @@ bool SpinLock::lock_try() {
   return ::InterlockedCompareExchange((LONG*)&opq_, 1, 0) == 0;
 #elif _KC_GCCATOMIC
   _assert_(true);
-  return __sync_bool_compare_and_swap(&opq_, 0, 1);
+  return __sync_bool_compare_and_swap(&opq_, 0, (void *)1);
 #else
   _assert_(true);
   ::pthread_spinlock_t* spin = (::pthread_spinlock_t*)opq_;
@@ -811,7 +811,7 @@ void SlottedSpinLock::lock(size_t idx) {
   SlottedSpinLockCore* core = (SlottedSpinLockCore*)opq_;
   uint32_t* lock = core->locks + idx;
   uint32_t wcnt = 0;
-  while (!__sync_bool_compare_and_swap(lock, 0, 1)) {
+  while (!__sync_bool_compare_and_swap(lock, 0, (unsigned int)1)) {
     if (wcnt >= LOCKBUSYLOOP) {
       Thread::chill();
     } else {
@@ -880,7 +880,7 @@ void SlottedSpinLock::lock_all() {
   for (size_t i = 0; i < slotnum; i++) {
     uint32_t* lock = locks + i;
     uint32_t wcnt = 0;
-    while (!__sync_bool_compare_and_swap(lock, 0, 1)) {
+    while (!__sync_bool_compare_and_swap(lock, 0, (unsigned int)1)) {
       if (wcnt >= LOCKBUSYLOOP) {
         Thread::chill();
       } else {
@@ -1449,7 +1449,7 @@ static void spinrwlocklock(SpinRWLockCore* core) {
   }
 #elif _KC_GCCATOMIC
   _assert_(core);
-  while (!__sync_bool_compare_and_swap(&core->sem, 0, 1)) {
+  while (!__sync_bool_compare_and_swap(&core->sem, 0, (unsigned int)1)) {
     ::sched_yield();
   }
 #else
@@ -1732,7 +1732,7 @@ static void slottedspinrwlocklock(SlottedSpinRWLockCore* core, size_t idx) {
   }
 #elif _KC_GCCATOMIC
   _assert_(core);
-  while (!__sync_bool_compare_and_swap(core->sems + idx, 0, 1)) {
+  while (!__sync_bool_compare_and_swap(core->sems + idx, 0, (unsigned int)1)) {
     ::sched_yield();
   }
 #else