Add llvm_unreachable to the end of a function when we're unable to process the Expr.

bwendling · bwendling · commit a2d7659e5bdc · 2025-01-13T14:08:46.000-08:00
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -1392,6 +1392,8 @@ CodeGenFunction::emitCountedByMemberSize(const Expr *E, llvm::Value *EmittedE,
           Builder.CreateAdd(FlexibleArrayMemberSize, OffsetDiff, "result"));
     }
   }
+
+  llvm_unreachable("unable to handle expression");
 }
 
 /// Returns a Value corresponding to the size of the given expression.

Original file line number	Diff line number	Diff line change
`@@ -1392,6 +1392,8 @@ CodeGenFunction::emitCountedByMemberSize(const Expr E, llvm::Value EmittedE,`
`1392`	`1392`	`Builder.CreateAdd(FlexibleArrayMemberSize, OffsetDiff, "result"));`
`1393`	`1393`	`}`
`1394`	`1394`	`}`
	`1395`	`+`
	`1396`	`+ llvm_unreachable("unable to handle expression");`
`1395`	`1397`	`}`
`1396`	`1398`
`1397`	`1399`	`/// Returns a Value corresponding to the size of the given expression.`