sync up with master

1 files changed, 5 insertions, 4 deletions

diff --git a/test/core/channel/metadata_buffer_test.c b/test/core/channel/metadata_buffer_test.c
index 50fbcaea69..9d7e1591f8 100644
--- a/test/core/channel/metadata_buffer_test.c
+++ b/test/core/channel/metadata_buffer_test.c
@@ -32,6 +32,7 @@
  */
 
 #include "src/core/channel/metadata_buffer.h"
+#include "src/core/support/string.h"
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 #include "test/core/util/test_config.h"
@@ -42,12 +43,12 @@
 /* construct a buffer with some prefix followed by an integer converted to
    a string */
 static gpr_slice construct_buffer(size_t prefix_length, size_t index) {
-  gpr_slice buffer = gpr_slice_malloc(prefix_length + 32);
+  gpr_slice buffer = gpr_slice_malloc(prefix_length + GPR_LTOA_MIN_BUFSIZE);
   memset(GPR_SLICE_START_PTR(buffer), 'a', prefix_length);
   GPR_SLICE_SET_LENGTH(
-      buffer, prefix_length +
-                  sprintf((char *)GPR_SLICE_START_PTR(buffer) + prefix_length,
-                          "%d", (int)index));
+      buffer,
+      prefix_length +
+          gpr_ltoa(index, (char *)GPR_SLICE_START_PTR(buffer) + prefix_length));
   return buffer;
 }