Bug 1234425 - Skip accessor IC frames in GetPcScript. r=h4writer

js/src/jit/JitFrameIterator.h

@@ -174,6 +174,9 @@ class JitFrameIterator
     bool isIonStubMaybeUnwound() const {
         return type_ == JitFrame_IonStub || type_ == JitFrame_Unwound_IonStub;
     }
+    bool isIonAccessorICMaybeUnwound() const {
+        return type_ == JitFrame_IonAccessorIC || type_ == JitFrame_Unwound_IonAccessorIC;
+    }
     bool isBailoutJS() const {
         return type_ == JitFrame_Bailout;
     }

js/src/jit/JitFrames.cpp

@@ -1630,11 +1630,11 @@ GetPcScript(JSContext* cx, JSScript** scriptRes, jsbytecode** pcRes)
             MOZ_ASSERT(it.isBaselineStub() || it.isBaselineJS() || it.isIonJS());
         }
 
-        // Skip Baseline or Ion stub frames.
+        // Skip Baseline/Ion stub and accessor IC frames.
         if (it.isBaselineStubMaybeUnwound()) {
             ++it;
             MOZ_ASSERT(it.isBaselineJS());
-        } else if (it.isIonStubMaybeUnwound()) {
+        } else if (it.isIonStubMaybeUnwound() || it.isIonAccessorICMaybeUnwound()) {
             ++it;
             MOZ_ASSERT(it.isIonJS());
         }