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| author | Pádraig Brady <P@draigBrady.com> | 2023-03-29 15:29:52 +0100 |
|---|---|---|
| committer | Pádraig Brady <P@draigBrady.com> | 2023-03-31 11:58:49 +0100 |
| commit | 7ad749886cddc76860bd8cfc38a408032a5e4c99 (patch) | |
| tree | 3ec78d113e52c0579a1e80411bd04d7c6a4ff437 /tests/misc/wc-total.sh | |
| parent | a9bd274616a8d2e99736b498e657cda4e6954f3f (diff) | |
| download | coreutils-7ad749886cddc76860bd8cfc38a408032a5e4c99.tar.gz | |
wc: diagnose overflow of total counts
* src/wc.c (wc): Use INT_ADD_WRAPV() to detect overflow.
(main): Upon overflow, saturate the total, print a diagnostic,
and set exit status.
* tests/misc/wc-total.sh: Add a test case, which operates
on BTRFS and 64 bit systems at least.
Reported at https://bugs.debian.org/1027100
Diffstat (limited to 'tests/misc/wc-total.sh')
| -rwxr-xr-x | tests/misc/wc-total.sh | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tests/misc/wc-total.sh b/tests/misc/wc-total.sh index 4848111cd..113b35504 100755 --- a/tests/misc/wc-total.sh +++ b/tests/misc/wc-total.sh @@ -18,6 +18,8 @@ . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src print_ver_ wc +require_sparse_support_ # for 'truncate --size=$BIG' +getlimits_ printf '%s\n' '2' > 2b || framework_failure_ printf '%s\n' '2 words' > 2w || framework_failure_ @@ -40,4 +42,19 @@ compare exp out || fail=1 wc --total=always 2b > out || fail=1 test "$(wc -l < out)" = 2 || fail=1 +if truncate -s 2E big; then + if test "$UINTMAX_MAX" = '18446744073709551615'; then + # Ensure overflow is diagnosed + returns_ 1 wc --total=only -c big big big big big big big big \ + > out || fail=1 + + # Ensure total is saturated + printf '%s\n' "$UINTMAX_MAX" > exp || framework_failure_ + compare exp out || fail=1 + + # Ensure overflow is ignored if totals not shown + wc --total=never -c big big big big big big big big || fail=1 + fi +fi + Exit $fail |