intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 24 insertions, 0 deletions

diff --git a/contrib/restricted/aws/aws-c-common/source/math.c b/contrib/restricted/aws/aws-c-common/source/math.c
new file mode 100644
index 00000000000..40d833c1a94
--- /dev/null
+++ b/contrib/restricted/aws/aws-c-common/source/math.c
@@ -0,0 +1,24 @@
+/**
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0.
+ */
+
+#include <aws/common/math.h>
+#include <stdarg.h>
+
+AWS_COMMON_API int aws_add_size_checked_varargs(size_t num, size_t *r, ...) {
+    va_list argp;
+    va_start(argp, r);
+
+    size_t accum = 0;
+    for (size_t i = 0; i < num; ++i) {
+        size_t next = va_arg(argp, size_t);
+        if (aws_add_size_checked(accum, next, &accum) == AWS_OP_ERR) {
+            va_end(argp);
+            return AWS_OP_ERR;
+        }
+    }
+    *r = accum;
+    va_end(argp);
+    return AWS_OP_SUCCESS;
+}