From 2871411902966603581d3c8ce86a4aa89d3b7229 Mon Sep 17 00:00:00 2001
From: Nick Kralevich <nnk@google.com>
Date: Fri, 5 Apr 2019 10:08:44 -0700
Subject: [PATCH] zip_writer_test.cc: fix implicit integer truncation

converting from a size_t to a uint8_t results in a loss of precision,
which triggers ubsan's implicit-unsigned-integer-truncation checker.
Make the conversion explicit.

This change allows the ziparchive-tests to pass with ubsan enabled.

Test: atest ziparchive-tests
Test: compiles and boots
Bug: 122975762
Change-Id: I63f28b58f1ca1f4c57323494cb1f4a41e0f34fba
---
 libziparchive/zip_writer_test.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libziparchive/zip_writer_test.cc b/libziparchive/zip_writer_test.cc
index c2842734e..7322afb1e 100644
--- a/libziparchive/zip_writer_test.cc
+++ b/libziparchive/zip_writer_test.cc
@@ -257,7 +257,7 @@ TEST_F(zipwriter, WriteCompressedZipFlushFull) {
   std::vector<uint8_t> buffer(kBufSize);
   size_t prev = 1;
   for (size_t i = 0; i < kBufSize; i++) {
-    buffer[i] = i + prev;
+    buffer[i] = static_cast<uint8_t>(i + prev);
     prev = i;
   }