[clang] [C] Add -Wjump-bypasses-init (PR #138009)

[Eli Friedman via cfe-commits]

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@@ -560,13 +560,14 @@ LABEL3:{} // #GOTOLBL3
 void IndirectGoto3_Loop() {
   void* ptr;
 #pragma acc parallel loop// #GOTOPAR_LOOP3
-  for (unsigned i = 0; i < 5; ++i) {
+  for (unsigned i = 0; i < 5; ++i) { // #INIT
 LABEL3:{} // #GOTOLBL3_2
     ptr = &&LABEL3;
   }
-// expected-error at +3{{cannot jump from this indirect goto statement to one of its possible targets}}
+// expected-error at +4{{cannot jump from this indirect goto statement to one of its possible targets}}
 // expected-note@#GOTOLBL3_2{{possible target of indirect goto statement}}
 // expected-note@#GOTOPAR_LOOP3{{invalid branch into OpenACC Compute/Combined Construct}}
+// expected-note@#INIT {{jump bypasses variable initialization}}
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efriedma-quic wrote:

Did you forget to update JumpScopeChecker::DiagnoseIndirectOrAsmJump?

https://github.com/llvm/llvm-project/pull/138009