Emit basic block for switch body; fixes PR2307.

llvm-svn: 50968

clang/lib/CodeGen/CGStmt.cpp

@@ -499,6 +499,9 @@ void CodeGenFunction::EmitSwitchStmt(const SwitchStmt &S) {
   llvm::BasicBlock *NextBlock = llvm::BasicBlock::Create("after.sw");
   SwitchInsn = Builder.CreateSwitch(CondV, NextBlock);
 
+  // Create basic block for body of switch
+  StartBlock("body.sw");
+
   // All break statements jump to NextBlock. If BreakContinueStack is non empty
   // then reuse last ContinueBlock.
   llvm::BasicBlock *ContinueBlock = NULL;

clang/test/CodeGen/switch.c

@@ -74,3 +74,14 @@ void foo5(){
     }
 }
 
+void foo6(){
+    switch(0){
+    }
+}
+
+void foo7(){
+    switch(0){
+      foo7();
+    }
+}
+