libplist/src/time64.c, branch 2.8.1

time64: fix signed overflow for extreme years in gmtime64_r()

2026-11-05T09:00:32+00:00

IS_LEAP() computed `tm_year + 1900` in int arithmetic, which overflows
for dates around year 2^31 (hit via check_tm() when writing dates).

Cast to Year (64-bit) in IS_LEAP(). Also make gmtime64_r() return NULL
with EOVERFLOW when the calendar year (tm_year + 1900) does not fit in
an int; the previous check compared tm_year with itself and could never
fail. This avoids strftime() wrapping the year in the output, and
callers fall back to their existing default date string.

Credit to OSSFuzz

time64: Add time_s support for WIN32

2026-01-22T12:26:30+00:00

Signed-off-by: Rosen Penev

time64: Assert if date is pointing to NULL

2025-10-29T15:33:48+00:00

Given the fact that timegm64 is only invoked with a valid pointer,
this should never trigger.

[clang-tidy] Fix bad widening casts

2021-06-21T23:27:02+00:00

Found with bugprone-misplaced-widening-cast

Signed-off-by: Rosen Penev

[clang-tidy] Avoid global non-const variables

2021-06-21T23:11:06+00:00

Found with cppcoreguidelines-avoid-non-const-global-variables

Signed-off-by: Rosen Penev

time64: Remove code duplication in separate if branches by combining the conditions

2020-11-24T00:25:10+00:00

[clang-tidy] Found with bugprone-branch-clone

Signed-off-by: Rosen Penev

Improve code readability by not using else after return

2020-11-24T00:06:31+00:00

[clang-tidy] Found with readability-else-after-return

Signed-off-by: Rosen Penev

Remove whitespace errors from all files

2020-06-08T20:47:19+00:00

time64: Silence compiler warnings about shadowed variable declarations

2020-05-14T17:22:07+00:00

time64/ctime64_r: localtime64_r can fail

2020-04-22T00:19:24+00:00

In ctime64_r, the call to localtime64_r can fail.  If we don't check for
this and then call asctime64_r, the results are garbage.

Signed-off-by: Derrick Lyndon Pallas