diff --git a/src/core/SkDraw.cpp b/src/core/SkDraw.cpp
index 24fc906..9a0509c 100644
--- a/src/core/SkDraw.cpp
+++ b/src/core/SkDraw.cpp
@@ -1457,10 +1457,13 @@
     void operator()(const SkGlyph& glyph, SkPoint position, SkPoint rounding) {
         position += rounding;
         // Prevent glyphs from being drawn outside of or straddling the edge of device space.
-        if (position.fX > INT_MAX - (INT16_MAX + UINT16_MAX) ||
-            position.fX < INT_MIN - (INT16_MIN + 0 /*UINT16_MIN*/) ||
-            position.fY > INT_MAX - (INT16_MAX + UINT16_MAX) ||
-            position.fY < INT_MIN - (INT16_MIN + 0 /*UINT16_MIN*/)) {
+        // Comparisons written a little weirdly so that NaN coordinates are treated safely.
+        auto gt = [](float a, int b) { return !(a <= (float)b); };
+        auto lt = [](float a, int b) { return !(a >= (float)b); };
+        if (gt(position.fX, INT_MAX - (INT16_MAX + UINT16_MAX)) ||
+            lt(position.fX, INT_MIN - (INT16_MIN + 0 /*UINT16_MIN*/)) ||
+            gt(position.fY, INT_MAX - (INT16_MAX + UINT16_MAX)) ||
+            lt(position.fY, INT_MIN - (INT16_MIN + 0 /*UINT16_MIN*/))) {
             return;
         }
 
@@ -1476,6 +1479,7 @@
 
         SkMask mask;
         mask.fBounds.set(left, top, right, bottom);
+        SkASSERT(!mask.fBounds.isEmpty());
 
         if (fUseRegionToDraw) {
             SkRegion::Cliperator clipper(*fClip, mask.fBounds);
diff --git a/tests/DrawTextTest.cpp b/tests/DrawTextTest.cpp
index f2da450..bf9bd39 100644
--- a/tests/DrawTextTest.cpp
+++ b/tests/DrawTextTest.cpp
@@ -11,8 +11,10 @@
 #include "SkPaint.h"
 #include "SkPoint.h"
 #include "SkRect.h"
+#include "SkSurface.h"
 #include "SkTypes.h"
 #include "Test.h"
+#include <math.h>
 
 static const SkColor bgColor = SK_ColorWHITE;
 
@@ -111,3 +113,21 @@
         }
     }
 }
+
+// Test drawing text at some unusual coordinates.
+// We measure success by not crashing or asserting.
+DEF_TEST(DrawText_weirdCoordinates, r) {
+    auto surface = SkSurface::MakeRasterN32Premul(10,10);
+    auto canvas = surface->getCanvas();
+
+    SkScalar oddballs[] = { 0.0f, (float)INFINITY, (float)NAN, 34359738368.0f };
+
+    for (auto x : oddballs) {
+        canvas->drawText("a", 1, +x, 0.0f, SkPaint());
+        canvas->drawText("a", 1, -x, 0.0f, SkPaint());
+    }
+    for (auto y : oddballs) {
+        canvas->drawText("a", 1, 0.0f, +y, SkPaint());
+        canvas->drawText("a", 1, 0.0f, -y, SkPaint());
+    }
+}