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-rw-r--r--Source/JavaScriptCore/runtime/JSValueInlineMethods.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/runtime/JSValueInlineMethods.h b/Source/JavaScriptCore/runtime/JSValueInlineMethods.h
index e13d34745..1373558f7 100644
--- a/Source/JavaScriptCore/runtime/JSValueInlineMethods.h
+++ b/Source/JavaScriptCore/runtime/JSValueInlineMethods.h
@@ -477,6 +477,7 @@ namespace JSC {
inline double JSValue::asDouble() const
{
+ ASSERT(isDouble());
return reinterpretIntptrToDouble(u.asInt64 - DoubleEncodeOffset);
}