Index: llvm/tools/llvm-cov/CoverageExporterJson.cpp
===================================================================
--- llvm/tools/llvm-cov/CoverageExporterJson.cpp
+++ llvm/tools/llvm-cov/CoverageExporterJson.cpp
@@ -72,8 +72,9 @@
 }
 
 json::Array renderSegment(const coverage::CoverageSegment &Segment) {
-  return json::Array({Segment.Line, Segment.Col, clamp_uint64_to_int64(Segment.Count),
-                      Segment.HasCount, Segment.IsRegionEntry});
+  return json::Array({Segment.Line, Segment.Col,
+                      clamp_uint64_to_int64(Segment.Count), Segment.HasCount,
+                      Segment.IsRegionEntry, Segment.IsGapRegion});
 }
 
 json::Array renderRegion(const coverage::CountedRegion &Region) {