Fix ctime() standard compliance bug
authorDavid A Ramos <daramos@gustav.stanford.edu>
Tue, 27 Jul 2010 11:10:15 +0000 (13:10 +0200)
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Tue, 27 Jul 2010 11:10:15 +0000 (13:10 +0200)
commit85b7ea33088fa16d319adbd228fc152f5b9da730
tree61d2c5e0e5839bae8731f067d429ac951687c29e
parent94889eacb194f5a61a99e296acbd1685788242d9
Fix ctime() standard compliance bug

fixes issue2209:
ctime() was updated in 0.9.31 to call localtime_r() instead of
localtime() to
avoid using a static buffer. Unfortunately, this change replaces the
static
buffer (which is zeroed out on initialization) with an uninitialized
local
buffer.

In the common case, this has no effect. However, with a sufficiently
large
time_t value, the value returned differs from that returned by
asctime(localtime(t)), and thus violates the ANSI/ISO standard.

An example input is (on a 64-bit machine):
time_t t = 0x7ffffffffff6c600;

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
libc/misc/time/time.c
test/time/tst-ctime.c [new file with mode: 0644]