[bitbake-devel] [PATCH 1/2] data: fix exception handling in exported_vars()

[Markus Lehtonen]

Fix a bug where a totally wrong value of a variable would be exported if
an exception happened during d.getVar(). Also, print a warning if an
exception happends instead of silently ignoring it. It would probably be
best just to raise the exception, instead, but use the warning for now
in order to avoid breaking existing builds.

[YOCTO #10393]

Signed-off-by: Markus Lehtonen <markus.lehtonen at linux.intel.com>
---
 lib/bb/data.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/lib/bb/data.py b/lib/bb/data.py
index c1f27cd..c56965c 100644
--- a/lib/bb/data.py
+++ b/lib/bb/data.py
@@ -258,11 +258,13 @@ def exported_keys(d):
                                       not d.getVarFlag(key, 'unexport', False))
 
 def exported_vars(d):
-    for key in exported_keys(d):
+    k = list(exported_keys(d))
+    for key in k:
         try:
             value = d.getVar(key, True)
-        except Exception:
-            pass
+        except Exception as err:
+            bb.warn("%s: Unable to export ${%s}: %s" % (d.getVar("FILE", True), key, err))
+            continue
 
         if value is not None:
             yield key, str(value)
-- 
2.6.6