From 91f5a3f253a3d7282923e690cc47cbc8710a7928 Mon Sep 17 00:00:00 2001
From: Jim Grosbach <grosbach@apple.com>
Date: Fri, 20 Jan 2012 20:02:39 +0000
Subject: TblGen diagnostic for mismatched template instantiation.

Providing a template argment to a non-templatized class was crashing
tblgen. Add a diagnostic.

For example,
$ cat bug.td
class A;

def B : A<0> {
}
$ llvm-tblgen bug.td
bug.td:3:11: error: template argument provided to non-template class
def B : A<0> {
          ^

llvm-svn: 148565
---
 llvm/lib/TableGen/TGParser.cpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'llvm/lib/TableGen')

diff --git a/llvm/lib/TableGen/TGParser.cpp b/llvm/lib/TableGen/TGParser.cpp
index 81c68292f1b..9ed7ebbb6bd 100644
--- a/llvm/lib/TableGen/TGParser.cpp
+++ b/llvm/lib/TableGen/TGParser.cpp
@@ -1516,6 +1516,10 @@ std::vector<Init*> TGParser::ParseValueList(Record *CurRec, Record *ArgsRec,
   unsigned int ArgN = 0;
   if (ArgsRec != 0 && EltTy == 0) {
     const std::vector<Init *> &TArgs = ArgsRec->getTemplateArgs();
+    if (!TArgs.size()) {
+      TokError("template argument provided to non-template class");
+      return std::vector<Init*>();
+    }
     const RecordVal *RV = ArgsRec->getValue(TArgs[ArgN]);
     if (!RV) {
       errs() << "Cannot find template arg " << ArgN << " (" << TArgs[ArgN]
-- 
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