diff --git a/include/jemalloc/internal/jemalloc_internal_inlines_c.h b/include/jemalloc/internal/jemalloc_internal_inlines_c.h
index c7ef9161..39c196a5 100644
--- a/include/jemalloc/internal/jemalloc_internal_inlines_c.h
+++ b/include/jemalloc/internal/jemalloc_internal_inlines_c.h
@@ -496,7 +496,7 @@ bool free_fastpath(void *ptr, size_t size, bool size_hint) {
         assert(tsd_fast(tsd) ||
             *tsd_thread_deallocated_next_event_fastp_get_unsafe(tsd) == 0);
 
-        emap_alloc_ctx_t alloc_ctx;
+        emap_alloc_ctx_t alloc_ctx JEMALLOC_CC_SILENCE_INIT({0, 0, false});
 	size_t usize;
         if (!size_hint) {
                 bool err = emap_alloc_ctx_try_lookup_fast(tsd,
diff --git a/include/jemalloc/internal/util.h b/include/jemalloc/internal/util.h
index 6646386e..35aa26e6 100644
--- a/include/jemalloc/internal/util.h
+++ b/include/jemalloc/internal/util.h
@@ -29,7 +29,7 @@
  * wherever the compiler fails to recognize that the variable is never used
  * uninitialized.
  */
-#define JEMALLOC_CC_SILENCE_INIT(v) = v
+#define JEMALLOC_CC_SILENCE_INIT(...) = __VA_ARGS__
 
 #ifdef __GNUC__
 #  define likely(x)   __builtin_expect(!!(x), 1)