diff --git a/docs/SkPath_Reference.bmh b/docs/SkPath_Reference.bmh
index 1ed7b46..a23c880 100644
--- a/docs/SkPath_Reference.bmh
+++ b/docs/SkPath_Reference.bmh
@@ -1884,7 +1884,7 @@
 
 # ------------------------------------------------------------------------------
 
-#Method void incReserve(unsigned extraPtCount)
+#Method void incReserve(int extraPtCount)
 #In Utility
 #Line # reserves space for additional data ##
 Grows Path Verb_Array and Point_Array to contain extraPtCount additional Points.
@@ -4222,26 +4222,26 @@
 
 #Example
 void draw(SkCanvas* canvas) {
-    SkPaint paint;
-    paint.setAntiAlias(true);
-    SkRRect rrect;
-    rrect.setRectXY({40, 40, 215, 215}, 50, 50);
-    SkPath path;
-    path.addRRect(rrect);
-    canvas->drawPath(path, paint);
-    for (int start = 0; start < 8; ++start) {
-        SkPath textPath;
-        textPath.addRRect(rrect, SkPath::kCW_Direction, start);
-        SkPathMeasure pathMeasure(textPath, false);
-        SkPoint position;
-        SkVector tangent;
-        if (!pathMeasure.getPosTan(0, &position, &tangent)) {
-            continue;
-        }
-        SkRSXform rsxForm = SkRSXform::Make(tangent.fX, tangent.fY,
-               position.fX + tangent.fY * 5, position.fY - tangent.fX * 5);
-        canvas->drawTextRSXform(&"01234567"[start], 1, &rsxForm, nullptr, paint);
-    }
+    SkPaint paint;
+    paint.setAntiAlias(true);
+    SkRRect rrect;
+    rrect.setRectXY({40, 40, 215, 215}, 50, 50);
+    SkPath path;
+    path.addRRect(rrect);
+    canvas->drawPath(path, paint);
+    for (int start = 0; start < 8; ++start) {
+        SkPath textPath;
+        textPath.addRRect(rrect, SkPath::kCW_Direction, start);
+        SkPathMeasure pathMeasure(textPath, false);
+        SkPoint position;
+        SkVector tangent;
+        if (!pathMeasure.getPosTan(0, &position, &tangent)) {
+            continue;
+        }
+        SkRSXform rsxForm = SkRSXform::Make(tangent.fX, tangent.fY,
+               position.fX + tangent.fY * 5, position.fY - tangent.fX * 5);
+        canvas->drawTextRSXform(&"01234567"[start], 1, &rsxForm, nullptr, paint);
+    }
 }
 ##
 
diff --git a/include/core/SkPath.h b/include/core/SkPath.h
index fd044a6..0f837f5 100644
--- a/include/core/SkPath.h
+++ b/include/core/SkPath.h
@@ -549,7 +549,7 @@
 
         @param extraPtCount  number of additional SkPoint to allocate
     */
-    void incReserve(unsigned extraPtCount);
+    void incReserve(int extraPtCount);
 
     /** Shrinks SkPath verb array and SkPoint array storage to discard unused capacity.
         May reduce the heap overhead for SkPath known to be fully constructed.
diff --git a/src/core/SkPath.cpp b/src/core/SkPath.cpp
index 94ed8cc..af8cf9e 100644
--- a/src/core/SkPath.cpp
+++ b/src/core/SkPath.cpp
@@ -757,9 +757,11 @@
         fFirstDirection = SkPathPriv::kUnknown_FirstDirection;  \
     } while (0)
 
-void SkPath::incReserve(U16CPU inc) {
+void SkPath::incReserve(int inc) {
     SkDEBUGCODE(this->validate();)
-    SkPathRef::Editor(&fPathRef, inc, inc);
+    if (inc > 0) {
+        SkPathRef::Editor(&fPathRef, inc, inc);
+    }
     SkDEBUGCODE(this->validate();)
 }
 
diff --git a/src/core/SkPathRef.cpp b/src/core/SkPathRef.cpp
index 8c8e7fb..f767323 100644
--- a/src/core/SkPathRef.cpp
+++ b/src/core/SkPathRef.cpp
@@ -30,6 +30,9 @@
                           int incReserveVerbs,
                           int incReservePoints)
 {
+    SkASSERT(incReserveVerbs >= 0);
+    SkASSERT(incReservePoints >= 0);
+
     if ((*pathRef)->unique()) {
         (*pathRef)->incReserve(incReserveVerbs, incReservePoints);
     } else {
diff --git a/tests/PathTest.cpp b/tests/PathTest.cpp
index 16d094c..febfd4f 100644
--- a/tests/PathTest.cpp
+++ b/tests/PathTest.cpp
@@ -5191,3 +5191,16 @@
     REPORTER_ASSERT(r, p.isValid());
     REPORTER_ASSERT(r, p.pathRefIsValid());
 }
+
+DEF_TEST(Path_increserve_handle_neg_crbug_883666, r) {
+    SkPath path;
+
+    path.conicTo({0, 0}, {1, 1}, SK_FloatNegativeInfinity);
+
+    // <== use a copy path object to force SkPathRef::copy() and SkPathRef::resetToSize()
+    SkPath shallowPath = path;
+
+    // make sure we don't assert/crash on this.
+    shallowPath.incReserve(0xffffffff);
+}
+