From 7d984ee1d7cb592efd5174f88effa6ba4a79b0f9 Mon Sep 17 00:00:00 2001
From: Oleh Prypin <oprypin@webrtc.org>
Date: Fri, 3 Aug 2018 00:03:17 +0200
Subject: [PATCH] Don't allocate an array of size 0, it causes a UBSan failure

Bug: webrtc:9587
Change-Id: I56bdf3c5c8744044b2d0d1fa3531fca504ea200f
Reviewed-on: https://webrtc-review.googlesource.com/92091
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Oleh Prypin <oprypin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24178}
---
 rtc_base/buffer.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rtc_base/buffer.h b/rtc_base/buffer.h
index 64974d3ed9..22f89372de 100644
--- a/rtc_base/buffer.h
+++ b/rtc_base/buffer.h
@@ -87,7 +87,7 @@ class BufferT {
   BufferT(size_t size, size_t capacity)
       : size_(size),
         capacity_(std::max(size, capacity)),
-        data_(new T[capacity_]) {
+        data_(capacity_ > 0 ? new T[capacity_] : nullptr) {
     RTC_DCHECK(IsConsistent());
   }