From 58f4b115f97435efa1df1baa3247791a13444c00 Mon Sep 17 00:00:00 2001
From: Nikita Popov <npopov@redhat.com>
Date: Tue, 26 Sep 2023 16:51:40 +0200
Subject: [PATCH 1/3] [Bitcode] Add some missing GetTypeByID failure checks

Print an error instead of crashing.

Fixes https://github.com/llvm/llvm-project/issues/67388.
---
 llvm/lib/Bitcode/Reader/MetadataLoader.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/Bitcode/Reader/MetadataLoader.cpp b/llvm/lib/Bitcode/Reader/MetadataLoader.cpp
index 0a9a80688a41..2f024899b451 100644
--- a/llvm/lib/Bitcode/Reader/MetadataLoader.cpp
+++ b/llvm/lib/Bitcode/Reader/MetadataLoader.cpp
@@ -1315,7 +1315,7 @@ Error MetadataLoader::MetadataLoaderImpl::parseOneMetadata(
 
     unsigned TyID = Record[0];
     Type *Ty = Callbacks.GetTypeByID(TyID);
-    if (Ty->isMetadataTy() || Ty->isVoidTy()) {
+    if (!Ty || Ty->isMetadataTy() || Ty->isVoidTy()) {
       dropRecord();
       break;
     }
@@ -1366,7 +1366,7 @@ Error MetadataLoader::MetadataLoaderImpl::parseOneMetadata(
 
     unsigned TyID = Record[0];
     Type *Ty = Callbacks.GetTypeByID(TyID);
-    if (Ty->isMetadataTy() || Ty->isVoidTy())
+    if (!Ty || Ty->isMetadataTy() || Ty->isVoidTy())
       return error("Invalid record");
 
     Value *V = ValueList.getValueFwdRef(Record[1], Ty, TyID,
-- 
2.33.0