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authorDenys Vlasenko <vda.linux@googlemail.com>2020-02-22 19:38:40 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2020-02-24 19:20:51 +0100
commit1555895b4af44ce47fe2365aec82e8e67c685f08 (patch)
treebd821be779bc1d489ac966b0d83e4a5e026979dd /networking/tls_aesgcm.c
parent823318822ccb0e0910abbd4e1f983637dfd9d3c0 (diff)
downloadbusybox-1555895b4af44ce47fe2365aec82e8e67c685f08.tar.gz
ash: expand: Fix multiple issues with EXP_DISCARD in evalvar
Upstream commit: Date: Wed, 12 Sep 2018 14:27:16 +0800 expand: Fix multiple issues with EXP_DISCARD in evalvar The commit 3cd538634f71538370f5af239f342aec48b7470b broke parameter expansion in multiple ways because the EXP_DISCARD flag wasn't set or tested for various cases: $ src/dash -c 'var=; echo ${var:+nonempty}' nonempty $ src/dash -u -c 'unset foo bar; echo ${foo+${bar}}' dash: 1: bar: parameter not set $ src/dash -c 'foo=bar; echo ${foo=BUG}; echo $foo' barBUG bar $ This patch fixes them by introducing a new discard variable that tracks whether the extra word should be discarded or not when it is parsed. Reported-by: Martijn Dekker <martijn@inlv.org> Fixes: 3cd538634f71 ("expand: Do not reprocess data when...") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Reported-by: Martijn Dekker <martijn@inlv.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'networking/tls_aesgcm.c')
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