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--- pr/include/prcountr.h.orig	2019-10-15 14:21:38 UTC
+++ pr/include/prcountr.h
@@ -394,7 +394,7 @@ PR_SubtractFromCounter(
 #define PR_GET_COUNTER(counter,handle)\
     (counter) = PR_GetCounter((handle))
 #else
-#define PR_GET_COUNTER(counter,handle) 0
+#define PR_GET_COUNTER(counter,handle)
 #endif
 
 NSPR_API(PRUint32)
@@ -468,7 +468,7 @@ PR_SetCounter(
 #define PR_FIND_NEXT_COUNTER_QNAME(next,handle)\
     (next) = PR_FindNextCounterQname((handle))
 #else
-#define PR_FIND_NEXT_COUNTER_QNAME(next,handle) NULL
+#define PR_FIND_NEXT_COUNTER_QNAME(next,handle)
 #endif
 
 NSPR_API(PRCounterHandle)
--- pr/src/misc/pralarm.c.orig	2019-10-15 14:21:38 UTC
+++ pr/src/misc/pralarm.c
@@ -101,7 +101,7 @@ static void PR_CALLBACK pr_alarmNotifier(void *arg)
 
     while (why != abort)
     {
-        PRIntervalTime pause;
+        PRIntervalTime pause = 0;
 
         PR_Lock(alarm->lock);
         while (why == scan)
--- pr/src/misc/prdtoa.c.orig	2019-10-15 14:21:38 UTC
+++ pr/src/misc/prdtoa.c
@@ -2896,9 +2896,9 @@ double dd; int mode, ndigits, *decpt, *sign; char **rv
        to hold the suppressed trailing zeros.
     */
 
-    int bbits, b2, b5, be, dig, i, ieps, ilim, ilim0, ilim1,
-        j, j1, k, k0, k_check, leftright, m2, m5, s2, s5,
-        spec_case, try_quick;
+    int bbits, b2, b5, be, dig, i, ieps, ilim = -1, ilim0, ilim1 = -1,
+                                         j, j1, k, k0, k_check, leftright, m2, m5, s2, s5,
+                                         spec_case, try_quick;
     Long L;
 #ifndef Sudden_Underflow
     int denorm;
--- pr/src/pthreads/ptio.c.orig	2019-10-15 14:21:38 UTC
+++ pr/src/pthreads/ptio.c
@@ -5262,6 +5262,7 @@ PR_IMPLEMENT(PRInt32) PR_Select(
 
     if (timeout == PR_INTERVAL_NO_TIMEOUT) {
         tvp = NULL;
+        start = 0; /* Not needed, but shuts down a warning */
     } else {
         tv.tv_sec = (PRInt32)PR_IntervalToSeconds(timeout);
         tv.tv_usec = (PRInt32)PR_IntervalToMicroseconds(
--- pr/src/pthreads/ptsynch.c.orig	2019-10-15 14:21:38 UTC
+++ pr/src/pthreads/ptsynch.c
@@ -25,7 +25,7 @@ static pthread_condattr_t _pt_cvar_attr;
 extern PTDebug pt_debug;  /* this is shared between several modules */
 #endif  /* defined(DEBUG) */
 
-#if defined(FREEBSD)
+#if defined(FREEBSD) && (defined(DEBUG) || defined(FORCE_PR_ASSERT))
 /*
  * On older versions of FreeBSD, pthread_mutex_trylock returns EDEADLK.
  * Newer versions return EBUSY.  We still need to support both.