From: whitequark <cz@m-labs.hk>
Date: Mon, 8 Jul 2019 09:33:01 +0000 (+0000)
Subject: back.rtlil: ignore empty source locations.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d2a72034350edc6402b53fca8ab692a602463522;p=nmigen.git

back.rtlil: ignore empty source locations.

This was a bug introduced during refactoring in 2492f490.
---

diff --git a/nmigen/back/rtlil.py b/nmigen/back/rtlil.py
index fc3bf1c..8c042c6 100644
--- a/nmigen/back/rtlil.py
+++ b/nmigen/back/rtlil.py
@@ -66,7 +66,7 @@ class _AttrBuilder:
     def _attributes(self, attrs, *, src=None, **kwargs):
         for name, value in attrs.items():
             self._attribute(name, value, **kwargs)
-        if src is not None:
+        if src:
             self._attribute("src", src, **kwargs)