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-rw-r--r--pym/portage/cache/flat_hash.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/pym/portage/cache/flat_hash.py b/pym/portage/cache/flat_hash.py
index 80b23fe4d..ed1eebd12 100644
--- a/pym/portage/cache/flat_hash.py
+++ b/pym/portage/cache/flat_hash.py
@@ -72,6 +72,8 @@ class database(fs_template.FsBased):
raise cache_errors.CacheCorruption(cpv, e)
for k, v in values.iteritems():
+ if not v:
+ continue
if k != "_mtime_" and (k == "_eclasses_" or k in self._known_keys):
myf.write("%s=%s\n" % (k, v))