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timestamp_t: a new data type for timestamps

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Git's source code assumes that unsigned long is at least as precise as
time_t. Which is incorrect, and causes a lot of problems, in particular
where unsigned long is only 32-bit (notably on Windows, even in 64-bit
versions).

So let's just use a more appropriate data type instead. In preparation
for this, we introduce the new `timestamp_t` data type.

By necessity, this is a very, very large patch, as it has to replace all
timestamps' data type in one go.

As we will use a data type that is not necessarily identical to `time_t`,
we need to be very careful to use `time_t` whenever we interact with the
system functions, and `timestamp_t` everywhere else.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Schindelin
2017-04-26 21:29:31 +02:00
committed by Junio C Hamano
parent cb71f8bdb5
commit dddbad728c
49 changed files with 170 additions and 158 deletions
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2
builtin/log.c
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@ -911,7 +911,7 @@ static void gen_message_id(struct rev_info *info, char *base)
{
struct strbuf buf = STRBUF_INIT;
strbuf_addf(&buf, "%s.%"PRItime".git.%s", base,
(unsigned long) time(NULL),
(timestamp_t) time(NULL),
git_committer_info(IDENT_NO_NAME|IDENT_NO_DATE|IDENT_STRICT));
info->message_id = strbuf_detach(&buf, NULL);
}