From b27fd7a344de49cea91fb86b43ec5135bf8d1c28 Mon Sep 17 00:00:00 2001
From: Ben Olmstead <bolms@google.com>
Date: Mon, 29 Aug 2022 20:00:21 +0000
Subject: [PATCH] Fix uninitialized memory in test code.

The `CanWriteExplicitlySizedEnumSizes` test can fail on some
compilers/configurations due to `buffer` being uninitialized.
---
 compiler/back_end/cpp/testcode/uint_sizes_test.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/back_end/cpp/testcode/uint_sizes_test.cc b/compiler/back_end/cpp/testcode/uint_sizes_test.cc
index 3b0cab4..cf8a7dd 100644
--- a/compiler/back_end/cpp/testcode/uint_sizes_test.cc
+++ b/compiler/back_end/cpp/testcode/uint_sizes_test.cc
@@ -360,7 +360,7 @@ TEST(SizesView, CanReadExplicitlySizedEnumSizes) {
 }
 
 TEST(SizesWriter, CanWriteExplicitlySizedEnumSizes) {
-  ::std::uint8_t buffer[sizeof kExplicitlySizedEnumSizes];
+  ::std::uint8_t buffer[sizeof kExplicitlySizedEnumSizes] = {0};
   auto writer = ExplicitlySizedEnumSizesWriter(buffer, sizeof buffer);
   writer.one_byte().Write(ExplicitlySizedEnum::VALUE1);
   writer.two_byte().Write(ExplicitlySizedEnum::VALUE10);