Fix potential memory leak when discarding FreeMachineFunction (bytecodealliance#4796)

kylo5aby · casaroli · commit 0cf9d4554ab6 · 2026-04-21T18:04:32.000+02:00
Signed-off-by: zhenweijin &lt;zhenwei.jin@intel.com&gt;
diff --git a/core/iwasm/compilation/aot_orc_extra2.cpp b/core/iwasm/compilation/aot_orc_extra2.cpp
@@ -85,6 +85,7 @@ MyPassManager::add(llvm::Pass *P)
     // a hack to avoid having a copy of the whole addPassesToEmitMC.
     // we want to add PrintStackSizes before FreeMachineFunctionPass.
     if (P->getPassName() == "Free MachineFunction") {
+        delete P;
         return;
     }
     llvm::legacy::PassManager::add(P);

Original file line number	Diff line number	Diff line change
`@@ -85,6 +85,7 @@ MyPassManager::add(llvm::Pass *P)`
`85`	`85`	`// a hack to avoid having a copy of the whole addPassesToEmitMC.`
`86`	`86`	`// we want to add PrintStackSizes before FreeMachineFunctionPass.`
`87`	`87`	`if (P->getPassName() == "Free MachineFunction") {`
	`88`	`+ delete P;`
`88`	`89`	`return;`
`89`	`90`	`}`
`90`	`91`	`llvm::legacy::PassManager::add(P);`