[PATCH] sanity.bbclass: Use pythonexception to raise real exceptions without backtraces

[Richard Purdie <richard.purdie@linuxfoundation.org>]

If the sanity code encounters a version change is doesn't understand, the current
output is unreadable and confusing for the user, particularly due to the presence 
of the backtrace.

Use improved functionality in bitbake to improve this and correctly pass python 
exceptions around.

[YOCTO #9291]

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes/sanity.bbclass b/meta/classes/sanity.bbclass
index a400bca..662f764 100644
--- a/meta/classes/sanity.bbclass
+++ b/meta/classes/sanity.bbclass
@@ -563,10 +563,10 @@ def sanity_check_conffiles(status, d):
                 d.getVar(current_version, True) != d.getVar(required_version, True):
             success = True
             try:
-                bb.build.exec_func(func, d)
+                bb.build.exec_func(func, d, pythonexception=True)
             except NotImplementedError as e:
                 success = False
-                status.addresult(e.msg)
+                status.addresult(str(e))
             if success:
                 status.reparse = True
 
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