diff --git a/include/jemalloc/internal/jemalloc_internal.h.in b/include/jemalloc/internal/jemalloc_internal.h.in
index 387aabbe..e0558140 100644
--- a/include/jemalloc/internal/jemalloc_internal.h.in
+++ b/include/jemalloc/internal/jemalloc_internal.h.in
@@ -611,11 +611,7 @@ ipalloc(size_t usize, size_t alignment, bool zero)
 	if (usize <= arena_maxclass && alignment <= PAGE_SIZE)
 		ret = arena_malloc(usize, zero);
 	else {
-		size_t run_size
-#ifdef JEMALLOC_CC_SILENCE
-		    = 0
-#endif
-		    ;
+		size_t run_size JEMALLOC_CC_SILENCE_INIT(0);
 
 		/*
 		 * Ideally we would only ever call sa2u() once per aligned
diff --git a/include/jemalloc/internal/util.h b/include/jemalloc/internal/util.h
index fb354da5..5156399f 100644
--- a/include/jemalloc/internal/util.h
+++ b/include/jemalloc/internal/util.h
@@ -16,6 +16,17 @@
  */
 #define JEMALLOC_CONCAT(...) __VA_ARGS__
 
+/*
+ * Silence compiler warnings due to uninitialized values.  This is used
+ * wherever the compiler fails to recognize that the variable is never used
+ * uninitialized.
+ */
+#ifdef JEMALLOC_CC_SILENCE
+#  define JEMALLOC_CC_SILENCE_INIT(v) = v
+#else
+#  define JEMALLOC_CC_SILENCE_INIT(v)
+#endif
+
 /*
  * Define a custom assert() in order to reduce the chances of deadlock during
  * assertion failure.
diff --git a/src/jemalloc.c b/src/jemalloc.c
index 331e4737..f9451796 100644
--- a/src/jemalloc.c
+++ b/src/jemalloc.c
@@ -751,11 +751,7 @@ je_malloc(size_t size)
 {
 	void *ret;
 	size_t usize;
-	prof_thr_cnt_t *cnt
-#ifdef JEMALLOC_CC_SILENCE
-	    = NULL
-#endif
-	    ;
+	prof_thr_cnt_t *cnt JEMALLOC_CC_SILENCE_INIT(NULL);
 
 	if (malloc_init()) {
 		ret = NULL;
@@ -818,11 +814,7 @@ imemalign(void **memptr, size_t alignment, size_t size,
 	int ret;
 	size_t usize;
 	void *result;
-	prof_thr_cnt_t *cnt
-#ifdef JEMALLOC_CC_SILENCE
-	    = NULL
-#endif
-	    ;
+	prof_thr_cnt_t *cnt JEMALLOC_CC_SILENCE_INIT(NULL);
 
 	assert(min_alignment != 0);
 
@@ -932,11 +924,7 @@ je_calloc(size_t num, size_t size)
 	void *ret;
 	size_t num_size;
 	size_t usize;
-	prof_thr_cnt_t *cnt
-#ifdef JEMALLOC_CC_SILENCE
-	    = NULL
-#endif
-	    ;
+	prof_thr_cnt_t *cnt JEMALLOC_CC_SILENCE_INIT(NULL);
 
 	if (malloc_init()) {
 		num_size = 0;
@@ -1010,16 +998,8 @@ je_realloc(void *ptr, size_t size)
 	void *ret;
 	size_t usize;
 	size_t old_size = 0;
-	prof_thr_cnt_t *cnt
-#ifdef JEMALLOC_CC_SILENCE
-	    = NULL
-#endif
-	    ;
-	prof_ctx_t *old_ctx
-#ifdef JEMALLOC_CC_SILENCE
-	    = NULL
-#endif
-	    ;
+	prof_thr_cnt_t *cnt JEMALLOC_CC_SILENCE_INIT(NULL);
+	prof_ctx_t *old_ctx JEMALLOC_CC_SILENCE_INIT(NULL);
 
 	if (size == 0) {
 		if (ptr != NULL) {
@@ -1173,11 +1153,7 @@ JEMALLOC_ATTR(visibility("default"))
 void *
 je_memalign(size_t alignment, size_t size)
 {
-	void *ret
-#ifdef JEMALLOC_CC_SILENCE
-	    = NULL
-#endif
-	    ;
+	void *ret JEMALLOC_CC_SILENCE_INIT(NULL);
 	imemalign(&ret, alignment, size, 1);
 	return (ret);
 }
@@ -1189,11 +1165,7 @@ JEMALLOC_ATTR(visibility("default"))
 void *
 je_valloc(size_t size)
 {
-	void *ret
-#ifdef JEMALLOC_CC_SILENCE
-	    = NULL
-#endif
-	    ;
+	void *ret JEMALLOC_CC_SILENCE_INIT(NULL);
 	imemalign(&ret, PAGE_SIZE, size, 1);
 	return (ret);
 }
diff --git a/src/util.c b/src/util.c
index 96c87f78..698b53a9 100644
--- a/src/util.c
+++ b/src/util.c
@@ -353,7 +353,7 @@ malloc_vsnprintf(char *str, size_t size, const char *format, va_list ap)
 				char *s;
 				size_t slen;
 			case 'd': case 'i': {
-				intmax_t val;
+				intmax_t val JEMALLOC_CC_SILENCE_INIT(0);
 				char buf[D2S_BUFSIZE];
 
 				GET_ARG_NUMERIC(val, len);
@@ -363,7 +363,7 @@ malloc_vsnprintf(char *str, size_t size, const char *format, va_list ap)
 				f++;
 				break;
 			} case 'o': {
-				uintmax_t val;
+				uintmax_t val JEMALLOC_CC_SILENCE_INIT(0);
 				char buf[O2S_BUFSIZE];
 
 				GET_ARG_NUMERIC(val, len);
@@ -372,7 +372,7 @@ malloc_vsnprintf(char *str, size_t size, const char *format, va_list ap)
 				f++;
 				break;
 			} case 'u': {
-				uintmax_t val;
+				uintmax_t val JEMALLOC_CC_SILENCE_INIT(0);
 				char buf[U2S_BUFSIZE];
 
 				GET_ARG_NUMERIC(val, len);
@@ -381,7 +381,7 @@ malloc_vsnprintf(char *str, size_t size, const char *format, va_list ap)
 				f++;
 				break;
 			} case 'x': case 'X': {
-				uintmax_t val;
+				uintmax_t val JEMALLOC_CC_SILENCE_INIT(0);
 				char buf[X2S_BUFSIZE];
 
 				GET_ARG_NUMERIC(val, len);