check if we fail to eval the conic in pathmeasure

Bug: oss-fuzz:7201
Change-Id: I9d40225b7827239d2a229dc056f7f2caa8a4eb31
Reviewed-on: https://skia-review.googlesource.com/122420
Reviewed-by: Cary Clark <caryclark@google.com>
Commit-Queue: Mike Reed <reed@google.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/core/SkPathMeasure.cpp b/src/core/SkPathMeasure.cpp
index 4ddb5a5c53..905c176b40 100644
--- a/src/core/SkPathMeasure.cpp
+++ b/src/core/SkPathMeasure.cpp
@@ -258,6 +258,9 @@ SkScalar SkPathMeasure::compute_conic_segs(const SkConic& conic, SkScalar distan
                                            int maxt, const SkPoint& maxPt, unsigned ptIndex) {
     int halft = (mint + maxt) >> 1;
     SkPoint halfPt = conic.evalAt(tValue2Scalar(halft));
+    if (!halfPt.isFinite()) {
+        return 0;
+    }
     if (tspan_big_enough(maxt - mint) && conic_too_curvy(minPt, halfPt, maxPt)) {
         distance = this->compute_conic_segs(conic, distance, mint, minPt, halft, halfPt, ptIndex);
         distance = this->compute_conic_segs(conic, distance, halft, halfPt, maxt, maxPt, ptIndex);