From 77008711c8e59eab5352f0982dc69e776160d6c9 Mon Sep 17 00:00:00 2001
From: Marcel Greter <marcel.greter@ocbnet.ch>
Date: Fri, 6 May 2016 15:32:13 +0200
Subject: [PATCH] Fix segfault with calc prefix and underscore vs hyphen

---
 src/eval.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/eval.cpp b/src/eval.cpp
index 8e73bdf9bf..4631bec7ec 100644
--- a/src/eval.cpp
+++ b/src/eval.cpp
@@ -828,7 +828,7 @@ namespace Sass {
       Backtrace here(backtrace(), c->pstate(), ", in function `" + c->name() + "`");
       exp.backtrace_stack.push_back(&here);
       // eval the body if user-defined or special, invoke underlying CPP function if native
-      if (body && !Prelexer::re_special_fun(c->name().c_str())) { result = body->perform(this); }
+      if (body && !Prelexer::re_special_fun(name.c_str())) { result = body->perform(this); }
       else if (func) { result = func(fn_env, *env, ctx, def->signature(), c->pstate(), backtrace()); }
       if (!result) error(std::string("Function ") + c->name() + " did not return a value", c->pstate());
       exp.backtrace_stack.pop_back();