Paul Eggert e94d95075d dd: improve integer overflow checking ...

* src/dd.c: Prefer signed to unsigned types where either will do,
as this helps improve checking with gcc -fsanitize=undefined.
Limit the signed types to their intended ranges.
(MAX_BLOCKSIZE): Don’t exceed IDX_MAX - slop either.
(input_offset_overflow): Remove; overflow now denoted by negative.
(parse_integer): Return INTMAX_MAX on overflow, instead of unspecified.
Do not falsely report overflow for ‘00x99999999999999999999999999999’.
* tests/dd/misc.sh: New test for 00xBIG.
* tests/dd/skip-seek-past-file.sh: Adjust to new diagnostic wording.
New test for BIGxBIG.

2022-01-27 13:04:14 -08:00

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ascii.sh

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bytes.sh

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direct.sh

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misc.sh

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no-allocate.sh

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nocache_eof.sh

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nocache.sh

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not-rewound.sh

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reblock.sh

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skip-seek2.sh

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skip-seek-past-dev.sh

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skip-seek-past-file.sh

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skip-seek.pl

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sparse.sh

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stats.sh

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stderr.sh

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unblock-sync.sh

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unblock.pl

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