From 175f558ce06f3b78cdc9e4e6370b16ca703b4c25 Mon Sep 17 00:00:00 2001
From: Siu Kwan Lam <michael.lam.sk@gmail.com>
Date: Tue, 19 Feb 2013 10:54:31 -0600
Subject: [PATCH] Add error checking for common mistake in Builder.call

---
 llvm/core.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/llvm/core.py b/llvm/core.py
index fa9dc77..fafaa22 100644
--- a/llvm/core.py
+++ b/llvm/core.py
@@ -2192,6 +2192,10 @@ class Builder(object):
             if  t != v.type:
                 raise TypeError(err_template % (t, v.type))
         arg_ptrs = unpack_values(args)
+
+        if (isinstance(fn, Function) and \
+            fn.module is not self.basic_block.function.module):
+            raise ValueError("Intermodule function call")
         return _make_value(
             _core.LLVMBuildCall(self.ptr, fn.ptr, arg_ptrs, name))