From 1d44fee399868ebc6c5e412ee23c7fd1e4c37351 Mon Sep 17 00:00:00 2001
From: Andreas Rumpf <rumpf_a@web.de>
Date: Fri, 3 Jun 2016 23:06:59 +0200
Subject: [PATCH] hotfix: don't crash for wrong template calls

---
 compiler/evaltempl.nim | 2 +-
 compiler/sigmatch.nim  | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/evaltempl.nim b/compiler/evaltempl.nim
index e136265da..96ede44fd 100644
--- a/compiler/evaltempl.nim
+++ b/compiler/evaltempl.nim
@@ -79,7 +79,7 @@ proc evalTemplateArgs(n: PNode, s: PSym; fromHlo: bool): PNode =
                     else: s.ast[genericParamsPos].len
     expectedRegularParams = <s.typ.len
     givenRegularParams = totalParams - genericParams
-
+  if givenRegularParams < 0: givenRegularParams = 0
   if totalParams > expectedRegularParams + genericParams:
     globalError(n.info, errWrongNumberOfArguments)
 
diff --git a/compiler/sigmatch.nim b/compiler/sigmatch.nim
index e72db45e7..df27e3c1d 100644
--- a/compiler/sigmatch.nim
+++ b/compiler/sigmatch.nim
@@ -256,6 +256,7 @@ proc describeArgs*(c: PContext, n: PNode, startIdx = 1;
       add(result, renderTree(n.sons[i].sons[0]))
       add(result, ": ")
       if arg.typ.isNil and arg.kind notin {nkStmtList, nkDo}:
+        # XXX we really need to 'tryExpr' here!
         arg = c.semOperand(c, n.sons[i].sons[1])
         n.sons[i].typ = arg.typ
         n.sons[i].sons[1] = arg