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authorElliott Hughes <enh@google.com>2019-02-12 16:29:09 -0800
committerRob Landley <rob@landley.net>2019-02-12 21:31:20 -0600
commit7079a558d6e9448d5434965985b650c1e572140e (patch)
tree5421ca8fe368722a744a7a5c906b05a6a5780c55 /tests/sha1sum.test
parent8326fe1f7e141f49a46a57acc6221651298b42c9 (diff)
downloadtoybox-7079a558d6e9448d5434965985b650c1e572140e.tar.gz
sed: fix substitution of empty capturing groups.
The test for \N where N was larger than the number of capturing groups in the regular expression was incorrect, and firing for cases such as matching __(ARM_)?NR_([a-z]*) against __NR_read, where the first group is empty (because it failed to match) but the second group did match "read". Use regex_t's re_nsub for the error check, and treat rm_so == -1 as a signal to just copy nothing into the result. (Found trying to build minijail in AOSP.)
Diffstat (limited to 'tests/sha1sum.test')
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