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lib/oe/recipeutils: fix patch_recipe*() with empty input

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If you supplied an empty file to patch_recipe() (or an empty list to
patch_recipe_lines()) then the result was IndexError because the code
checking to see if it needed to add an extra line of padding didn't
check to see if there were in fact any lines before trying to access the
last line.

Fixes [YOCTO #9972].

(From OE-Core rev: 92a73e870478ddb2a2d137e3fff28828809bec2e)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Paul Eggleton
2016-07-25 20:47:17 +12:00
committed by Richard Purdie
parent dd8540550f
commit 25507bfa82
1 changed files with 1 additions and 1 deletions
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2
meta/lib/oe/recipeutils.py
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@@ -259,7 +259,7 @@ def patch_recipe_lines(fromlines, values, trailing_newline=True):
changed, tolines = bb.utils.edit_metadata(fromlines, varlist, patch_recipe_varfunc, match_overrides=True)
if remainingnames:
if tolines[-1].strip() != '':
if tolines and tolines[-1].strip() != '':
tolines.append('\n')
for k in remainingnames.keys():
outputvalue(k, tolines)