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-rw-r--r--src/mbgl/layout/symbol_projection.cpp6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/mbgl/layout/symbol_projection.cpp b/src/mbgl/layout/symbol_projection.cpp
index 9e077e2532..ef669c6e19 100644
--- a/src/mbgl/layout/symbol_projection.cpp
+++ b/src/mbgl/layout/symbol_projection.cpp
@@ -240,7 +240,11 @@ namespace mbgl {
const PlacedSymbol& symbol,
const mat4& labelPlaneMatrix,
const bool returnTileDistance) {
-
+ if (symbol.glyphOffsets.empty()) {
+ assert(false);
+ return optional<std::pair<PlacedGlyph, PlacedGlyph>>();
+ }
+
const float firstGlyphOffset = symbol.glyphOffsets.front();
const float lastGlyphOffset = symbol.glyphOffsets.back();;