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-rw-r--r--bitbake/lib/bb/siggen.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index f9c4798e3d..6a729f3b1e 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -645,9 +645,9 @@ def compare_sigfiles(a, b, recursecb=None, color=False, collapsed=False):
a_taint = a_data.get('taint', None)
b_taint = b_data.get('taint', None)
if a_taint != b_taint:
- if a_taint.startswith('nostamp:'):
+ if a_taint and a_taint.startswith('nostamp:'):
a_taint = a_taint.replace('nostamp:', 'nostamp(uuid4):')
- if b_taint.startswith('nostamp:'):
+ if b_taint and b_taint.startswith('nostamp:'):
b_taint = b_taint.replace('nostamp:', 'nostamp(uuid4):')
output.append(color_format("{color_title}Taint (by forced/invalidated task) changed{color_default} from %s to %s") % (a_taint, b_taint))