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dd: warn about counts specified with confusing 0x prefix

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* src/dd.c (parse_integer): Suggest to use "00x" instead of "0x",
which is significant for the "count", "seek", and "skip" operands.
* tests/dd/misc.sh: Add a test case.
Fixes http://bugs.gnu.org/24874
This commit is contained in:
Pádraig Brady
2016-11-04 16:55:58 +00:00
parent d0ddfadfb2
commit c6656eed6a
2 changed files with 16 additions and 0 deletions
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10
tests/dd/misc.sh
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@@ -107,4 +107,14 @@ compare err_ok err || fail=1
test $fail -eq 0 && fail=$warn
# Check a warning is issued for ambiguous 0x... numbers
dd if=/dev/null count=0x1 seek=0x1 skip=0x1 status=none 2>err || fail=1
cat <<\EOF >exp
dd: warning: '0x' is a zero multiplier; use '00x' if that is intended
dd: warning: '0x' is a zero multiplier; use '00x' if that is intended
dd: warning: '0x' is a zero multiplier; use '00x' if that is intended
EOF
compare exp err || fail=1
Exit $fail