From bf4c7340f32c1e673e6a37b91fc65305757f52d1 Mon Sep 17 00:00:00 2001
From: zmiao <miao.zhao@mapbox.com>
Date: Tue, 7 Apr 2020 16:30:30 +0300
Subject: [build] Fix undefined behavour sanitizer (#16375)

* [build] Fix integer overflow runtime error for core part

Temporarily remove circle ci UBSAN build precondition

* [build] Enable all of the ubsans

[build] Check runtime error

[build] Update UBSAN_OPTION

* [build] Add UBSAN blacklist

[build] Ignore system libraries

[build] Ignore vendor library

* [build] Fix implicit conversion runtime error in core

* [build] Fix division by zero runtime error

* [build] Add unfixed error to ubsan blacklist

* [build] Make UBSAN halt on error

Revert "Temporary remove build precondition"

* [build] Fix division by zero error

* [build] Make UBSAN officially work without FIXME prefix

* [build] Fix implicit conversion from int64_t to uint64_t

* [build] Rename style test json file name

* Address review findings
---
 src/mbgl/util/tiny_sdf.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/mbgl/util/tiny_sdf.cpp')

diff --git a/src/mbgl/util/tiny_sdf.cpp b/src/mbgl/util/tiny_sdf.cpp
index 6edcd83bc2..a71d04386f 100644
--- a/src/mbgl/util/tiny_sdf.cpp
+++ b/src/mbgl/util/tiny_sdf.cpp
@@ -35,7 +35,7 @@ void edt1d(std::vector<double>& f,
 
     for (uint32_t q = 0, k = 0; q < n; q++) {
         while (z[k + 1] < q) k++;
-        d[q] = (q - v[k]) * (q - v[k]) + f[v[k]];
+        d[q] = (static_cast<double>(q) - v[k]) * (static_cast<double>(q) - v[k]) + f[v[k]];
     }
 }
 
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