swiftlang
diff --git a/‎include/swift/SILOptimizer/Differentiation/ADContext.h
Lines changed: 1 addition & 1 deletion b/‎include/swift/SILOptimizer/Differentiation/ADContext.h
Lines changed: 1 addition & 1 deletion
@@ -357,7 +357,7 @@ ADContext::emitNondifferentiabilityError(SourceLoc loc,
     return diagnose(loc, diag::autodiff_when_differentiating_function_call);
   }
   }
-  llvm_unreachable("invalid invoker");
+  llvm_unreachable("Invalid invoker kind"); // silences MSVC C4715
 }
 
 } // end namespace autodiff
Original file line number	Diff line number	Diff line change
`@@ -357,7 +357,7 @@ ADContext::emitNondifferentiabilityError(SourceLoc loc,`
`357`	`357`	`return diagnose(loc, diag::autodiff_when_differentiating_function_call);`
`358`	`358`	`}`
`359`	`359`	`}`
`360`		`- llvm_unreachable("invalid invoker");`
	`360`	`+ llvm_unreachable("Invalid invoker kind"); // silences MSVC C4715`
`361`	`361`	`}`
`362`	`362`
`363`	`363`	`} // end namespace autodiff`