diff -up firefox-68.1.0/js/xpconnect/src/XPCWrappedNative.cpp.ppc64le-inline firefox-68.1.0/js/xpconnect/src/XPCWrappedNative.cpp

--- firefox-68.1.0/js/xpconnect/src/XPCWrappedNative.cpp.ppc64le-inline	2019-08-26 18:52:28.000000000 +0200

+++ firefox-68.1.0/js/xpconnect/src/XPCWrappedNative.cpp	2019-08-29 08:49:57.695687874 +0200

@@ -1092,7 +1092,11 @@ class MOZ_STACK_CLASS CallMethodHelper f

   MOZ_ALWAYS_INLINE bool GetOutParamSource(uint8_t paramIndex,

                                            MutableHandleValue srcp) const;

+#if (__GNUC__ && __linux__ && __PPC64__ && _LITTLE_ENDIAN)

+  bool GatherAndConvertResults();

+#else

   MOZ_ALWAYS_INLINE bool GatherAndConvertResults();

+#endif

   MOZ_ALWAYS_INLINE bool QueryInterfaceFastPath();

@@ -1139,7 +1143,11 @@ class MOZ_STACK_CLASS CallMethodHelper f

   ~CallMethodHelper();

+#if (__GNUC__ && __linux__ && __PPC64__ && _LITTLE_ENDIAN)

+  bool Call();

+#else

   MOZ_ALWAYS_INLINE bool Call();

+#endif

   // Trace implementation so we can put our CallMethodHelper in a Rooted<T>.

   void trace(JSTracer* aTrc);