fix some pathops bugs found in 1M skps

tests/PathOpsTSectDebug.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPathOpsTSect.h"
 
 template<typename TCurve, typename OppCurve>
@@ skipping 65 matching lines @@
 void SkTSect<TCurve, OppCurve>::dumpBounded(int id) const {
     const SkTSpan<TCurve, OppCurve>* bounded = debugSpan(id);
     if (!bounded) {
         SkDebugf("no span matches %d\n", id);
         return;
     }
     const SkTSpan<OppCurve, TCurve>* test = bounded->debugOpp()->fHead;
     do {
         if (test->findOppSpan(bounded)) {
             test->dump();
+            SkDebugf(" ");
         }
     } while ((test = test->next()));
+    SkDebugf("\n");
 }
 
 template<typename TCurve, typename OppCurve>
 void SkTSect<TCurve, OppCurve>::dumpBounds() const {
     const SkTSpan<TCurve, OppCurve>* test = fHead;
     do {
         test->dumpBounds();
     } while ((test = test->next()));
 }
 
@@ skipping 36 matching lines @@
 const SkTSpan<TCurve, OppCurve>* SkTSpan<TCurve, OppCurve>::debugSpan(int id) const {
     return SkDEBUGRELEASE(fDebugSect->debugSpan(id), nullptr);
 }
 
 template<typename TCurve, typename OppCurve>
 const SkTSpan<TCurve, OppCurve>* SkTSpan<TCurve, OppCurve>::debugT(double t) const {
     return SkDEBUGRELEASE(fDebugSect->debugT(t), nullptr);
 }
 
 template<typename TCurve, typename OppCurve>
+void SkTSpan<TCurve, OppCurve>::dumpAll() const {
+    dumpID();
+    SkDebugf("=(%g,%g) [", fStartT, fEndT);
+    const SkTSpanBounded<OppCurve, TCurve>* testBounded = fBounded;
+    while (testBounded) {
+        const SkTSpan<OppCurve, TCurve>* span = testBounded->fBounded;
+        const SkTSpanBounded<OppCurve, TCurve>* next = testBounded->fNext;
+        span->dumpID();
+        SkDebugf("=(%g,%g)", span->fStartT, span->fEndT);
+        if (next) {
+            SkDebugf(" ");
+        }
+        testBounded = next;
+    }
+    SkDebugf("]\n");
+}
+
+template<typename TCurve, typename OppCurve>
 void SkTSpan<TCurve, OppCurve>::dump() const {
     dumpID();
     SkDebugf("=(%g,%g) [", fStartT, fEndT);
     const SkTSpanBounded<OppCurve, TCurve>* testBounded = fBounded;
     while (testBounded) {
         const SkTSpan<OppCurve, TCurve>* span = testBounded->fBounded;
         const SkTSpanBounded<OppCurve, TCurve>* next = testBounded->fNext;
         span->dumpID();
         if (next) {
             SkDebugf(",");
@@ skipping 28 matching lines @@
 template<typename TCurve, typename OppCurve>
 void SkTSpan<TCurve, OppCurve>::dumpID() const {
     if (fCoinStart.isCoincident()) {
         SkDebugf("%c", '*');
     }
     SkDebugf("%d", debugID());
     if (fCoinEnd.isCoincident()) {
         SkDebugf("%c", '*');
     }
 }