Fix seg fault for catch(...)

fixes vgvassilev#86
vaithak · Jan 18, 2024 · 785e934 · 785e934
1 parent d8ef790
commit 785e934
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/lib/Differentiator/StmtClone.cpp b/lib/Differentiator/StmtClone.cpp
@@ -426,7 +426,10 @@ DEFINE_CLONE_STMT(ForStmt, (Ctx, Clone(Node->getInit()), Clone(Node->getCond()),
                             Node->getForLoc(), Node->getLParenLoc(), Node->getRParenLoc()))
 DEFINE_CLONE_STMT(ContinueStmt, (Node->getContinueLoc()))
 DEFINE_CLONE_STMT(BreakStmt, (Node->getBreakLoc()))
-DEFINE_CLONE_STMT(CXXCatchStmt, (Node->getCatchLoc(), static_cast<VarDecl*>(CloneDecl(Node->getExceptionDecl())), Clone(Node->getHandlerBlock())))
+DEFINE_CLONE_STMT(CXXCatchStmt, (Node->getCatchLoc(),
+                                 static_cast<VarDecl*>(
+                                     CloneDeclOrNull(Node->getExceptionDecl())),
+                                 Clone(Node->getHandlerBlock())))
 
 Stmt* StmtClone::VisitCXXTryStmt(CXXTryStmt* Node) {
   llvm::SmallVector<Stmt*, 4> CatchStmts(std::max(1u, Node->getNumHandlers()));

diff --git a/test/FirstDerivative/DiffInterface.C b/test/FirstDerivative/DiffInterface.C
@@ -75,13 +75,18 @@ int f_try_catch(int x)
   catch (int) {
     return 0;
   }
+  catch (...) {
+    return 1;
+  }
 
 // CHECK: int f_try_catch_darg0(int x) {
 // CHECK-NEXT:    int _d_x = 1;
 // CHECK-NEXT:    try {
 // CHECK-NEXT:        return x;
 // CHECK-NEXT:    } catch (int) {
 // CHECK-NEXT:        return 0;
+// CHECK-NEXT:    } catch (...) {
+// CHECK-NEXT:        return 1;
 // CHECK-NEXT:    }
 // CHECK-NEXT: }