1 files changed, 80 insertions, 0 deletions
diff --git a/memory/jemalloc/src/test/unit/zero.c b/memory/jemalloc/src/test/unit/zero.c
new file mode 100644
index 000000000..30ebe37a4
--- /dev/null
+++ b/memory/jemalloc/src/test/unit/zero.c
@@ -0,0 +1,80 @@
+#include "test/jemalloc_test.h"
+
+#ifdef JEMALLOC_FILL
+const char *malloc_conf =
+    "abort:false,junk:false,zero:true,redzone:false,quarantine:0";
+#endif
+
+static void
+test_zero(size_t sz_min, size_t sz_max)
+{
+	uint8_t *s;
+	size_t sz_prev, sz, i;
+#define	MAGIC	((uint8_t)0x61)
+
+	sz_prev = 0;
+	s = (uint8_t *)mallocx(sz_min, 0);
+	assert_ptr_not_null((void *)s, "Unexpected mallocx() failure");
+
+	for (sz = sallocx(s, 0); sz <= sz_max;
+	    sz_prev = sz, sz = sallocx(s, 0)) {
+		if (sz_prev > 0) {
+			assert_u_eq(s[0], MAGIC,
+			    "Previously allocated byte %zu/%zu is corrupted",
+			    ZU(0), sz_prev);
+			assert_u_eq(s[sz_prev-1], MAGIC,
+			    "Previously allocated byte %zu/%zu is corrupted",
+			    sz_prev-1, sz_prev);
+		}
+
+		for (i = sz_prev; i < sz; i++) {
+			assert_u_eq(s[i], 0x0,
+			    "Newly allocated byte %zu/%zu isn't zero-filled",
+			    i, sz);
+			s[i] = MAGIC;
+		}
+
+		if (xallocx(s, sz+1, 0, 0) == sz) {
+			s = (uint8_t *)rallocx(s, sz+1, 0);
+			assert_ptr_not_null((void *)s,
+			    "Unexpected rallocx() failure");
+		}
+	}
+
+	dallocx(s, 0);
+#undef MAGIC
+}
+
+TEST_BEGIN(test_zero_small)
+{
+
+	test_skip_if(!config_fill);
+	test_zero(1, SMALL_MAXCLASS-1);
+}
+TEST_END
+
+TEST_BEGIN(test_zero_large)
+{
+
+	test_skip_if(!config_fill);
+	test_zero(SMALL_MAXCLASS+1, large_maxclass);
+}
+TEST_END
+
+TEST_BEGIN(test_zero_huge)
+{
+
+	test_skip_if(!config_fill);
+	test_zero(large_maxclass+1, chunksize*2);
+}
+TEST_END
+
+int
+main(void)
+{
+
+	return (test(
+	    test_zero_small,
+	    test_zero_large,
+	    test_zero_huge));
+}