Fix NULL pointer dereference

valeriyvan · valeriyvan · commit ad33e6a7f762 · 2022-12-21T22:58:00.000+02:00
diff --git a/lib/SIL/Utils/PrunedLiveness.cpp b/lib/SIL/Utils/PrunedLiveness.cpp
@@ -178,6 +178,7 @@ llvm::StringRef PrunedLiveBlocks::getStringRef(IsLive isLive) const {
 void PrunedLiveBlocks::print(llvm::raw_ostream &OS) const {
   if (!discoveredBlocks) {
     OS << "No deterministic live block list\n";
+    return;
   }
   for (auto *block : *discoveredBlocks) {
     block->printAsOperand(OS);

Original file line number	Diff line number	Diff line change
`@@ -178,6 +178,7 @@ llvm::StringRef PrunedLiveBlocks::getStringRef(IsLive isLive) const {`
`178`	`178`	`void PrunedLiveBlocks::print(llvm::raw_ostream &OS) const {`
`179`	`179`	`if (!discoveredBlocks) {`
`180`	`180`	`OS << "No deterministic live block list\n";`
	`181`	`+ return;`
`181`	`182`	`}`
`182`	`183`	`for (auto block : discoveredBlocks) {`
`183`	`184`	`block->printAsOperand(OS);`