--- dyld/dyld-1340/mach_o/Header.cpp
+++ dyld/dyld-1323.3/mach_o/Header.cpp
@@ -340,7 +340,7 @@
     __block PlatformAndVersions pvs;
     forEachPlatformLoadCommand(^(Platform platform, Version32 minOS, Version32 sdk) {
         Error err = pvs.zip({ platform, minOS, sdk });
-        // .zip() will not combine platforms if it is an invalid combo
+        assert(err.noError());
     });
     return pvs;
 }