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Avoid infinite recursion in "tree-erase" if there is a circular dependency

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This commit is contained in:
Pierre Labastie 2017-08-22 09:00:49 +00:00
parent ca37fee8d7
commit 6c8095a04f
1 changed files with 10 additions and 4 deletions
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14
BLFS/libs/func_dependencies
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@ -276,17 +276,23 @@ tree_erase() { #
#--------------#
local file=$1
local f
local -a rootlink
local rootlink
local rootlink2
#echo file=$file
rootlink=($(head -n1 $file))
rootlink="$(head -n1 $file) "
for f in $(grep '[^0-9 ]' $file | sed 's/.* //'); do
# echo " f"=$f
if [ -f ${f}.dep ]; then
rootlink2="$(head -n1 ${f}.dep) "
# We want two things:
# i) do not erase the file if it is in another branch
# ii) do not erase the file if there is a circular dependency
# for case i), we test that rootlink is contained in rootlink2
# for case ii), we test that rootlink2 is not contained in
# rootlink.
# See comment above about srootlink
if [[ ${rootlink2#"${rootlink[*]} "} != ${rootlink2} ]] ; then
if [[ ${rootlink2#${rootlink}} != ${rootlink2} &&
${rootlink#${rootlink2}} == ${rootlink} ]] ; then
tree_erase ${f}.dep
fi
fi