fix a crash on invalid metadata, e.g.: call i32 @foo(), XXXX

We would return the error without inserting the new instruction
into the program, so it wouldn't get deallocated, and an abort
would trigger when the module was deleted. 

llvm-svn: 100602

2 files changed, 5 insertions, 3 deletions

diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
index cdad0770a38..7eff9cc7e36 100644
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -2933,6 +2933,8 @@ bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
     default: assert(0 && "Unknown ParseInstruction result!");
     case InstError: return true;
     case InstNormal:
+      BB->getInstList().push_back(Inst);
+
       // With a normal result, we check to see if the instruction is followed by
       // a comma and metadata.
       if (EatIfPresent(lltok::comma))
@@ -2940,6 +2942,8 @@ bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
           return true;
       break;
     case InstExtraComma:
+      BB->getInstList().push_back(Inst);
+
       // If the instruction parser ate an extra comma at the end of it, it
       // *must* be followed by metadata.
       if (ParseInstructionMetadata(Inst))
@@ -2947,8 +2951,6 @@ bool LLParser::ParseBasicBlock(PerFunctionState &PFS) {
       break;        
     }
 
-    BB->getInstList().push_back(Inst);
-
     // Set the name on the instruction.
     if (PFS.SetInstName(NameID, NameStr, NameLoc, Inst)) return true;
   } while (!isa<TerminatorInst>(Inst));
diff --git a/llvm/lib/AsmParser/LLParser.h b/llvm/lib/AsmParser/LLParser.h
index ae460bbb57b..c8f669f641a 100644
--- a/llvm/lib/AsmParser/LLParser.h
+++ b/llvm/lib/AsmParser/LLParser.h
@@ -74,7 +74,7 @@ namespace llvm {
   public:
     typedef LLLexer::LocTy LocTy;
   private:
-    LLVMContext& Context;
+    LLVMContext &Context;
     LLLexer Lex;
     Module *M;