From 0ee5e2e845187d11fd45f1bf367eb688799a373f Mon Sep 17 00:00:00 2001
From: Siu Kwan Lam <michael.lam.sk@gmail.com>
Date: Thu, 20 Sep 2012 15:15:26 -0700
Subject: [PATCH] Raise TypeError when a function is called with the wrong
 argument. Otherwise, llvm will give assertion error which is hard to
 trackdown.

---
 llvm/core.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/llvm/core.py b/llvm/core.py
index d92f6d4..2aee074 100644
--- a/llvm/core.py
+++ b/llvm/core.py
@@ -2067,6 +2067,11 @@ class Builder(object):
 
     def call(self, fn, args, name=""):
         check_is_callable(fn)
+
+        err_template = 'Argument type mismatch: expected %s but got %s'
+        for i, (t, v) in enumerate(zip(fn.type.pointee.args, args)):
+            if  t != v.type:
+                raise TypeError(err_template % (t, v.type))
         arg_ptrs = unpack_values(args)
         return _make_value(
             _core.LLVMBuildCall(self.ptr, fn.ptr, arg_ptrs, name))