For PR1289:

Check at the end of the parse that there are no unresolved types and no
undefined values. Issue errors if there are. This gets rid of the need
for implementation or checkpoint by ensuring you can't finish a parse with
undefined things.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35499 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 32 insertions, 0 deletions

diff --git a/lib/AsmParser/llvmAsmParser.y b/lib/AsmParser/llvmAsmParser.y
index 4271273573..308319639e 100644
--- a/lib/AsmParser/llvmAsmParser.y
+++ b/lib/AsmParser/llvmAsmParser.y
@@ -2950,6 +2950,38 @@ static Module* RunParser(Module * M) {
     return 0;
   }
 
+  // Emit an error if there are any unresolved types left.
+  if (!CurModule.LateResolveTypes.empty()) {
+    const ValID &DID = CurModule.LateResolveTypes.begin()->first;
+    if (DID.Type == ValID::LocalName) {
+      GenerateError("Undefined type remains at eof: '"+DID.getName() + "'");
+    } else {
+      GenerateError("Undefined type remains at eof: #" + itostr(DID.Num));
+    }
+    if (ParserResult)
+      delete ParserResult;
+    return 0;
+  }
+
+  // Emit an error if there are any unresolved values left.
+  if (!CurModule.LateResolveValues.empty()) {
+    Value *V = CurModule.LateResolveValues.back();
+    std::map<Value*, std::pair<ValID, int> >::iterator I =
+      CurModule.PlaceHolderInfo.find(V);
+
+    if (I != CurModule.PlaceHolderInfo.end()) {
+      ValID &DID = I->second.first;
+      if (DID.Type == ValID::LocalName) {
+        GenerateError("Undefined value remains at eof: "+DID.getName() + "'");
+      } else {
+        GenerateError("Undefined value remains at eof: #" + itostr(DID.Num));
+      }
+      if (ParserResult)
+        delete ParserResult;
+      return 0;
+    }
+  }
+
   // Check to make sure that parsing produced a result
   if (!ParserResult)
     return 0;