Bug 1512162: Followup: narrow non-stack-protected window for XPConnect on ppc64le. r=bhollley

js/xpconnect/src/XPCWrappedNative.cpp

@@ -9,6 +9,8 @@
 #if(__GNUC__ && __linux__ && __PPC64__ && _LITTLE_ENDIAN)
 // Stack protection generates incorrect code currently with gcc on ppc64le
 // (bug 1512162).
+#define MOZ_GCC_STACK_PROTECTOR_DISABLED 1 // removed at end of file
+#pragma GCC push_options
 #pragma GCC optimize("no-stack-protector")
 #endif
 
@@ -1854,3 +1856,10 @@ static void DEBUG_CheckClassInfoClaims(XPCWrappedNative* wrapper) {
   }
 }
 #endif
+
+#if (MOZ_GCC_STACK_PROTECTOR_DISABLED)
+// Reenable stack protection in following modules, if we disabled it
+// (bug 1512162).
+#pragma GCC pop_options
+#undef MOZ_GCC_STACK_PROTECTOR_DISABLED
+#endif