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authorRichard Maw <richard.maw@codethink.co.uk>2012-01-17 14:43:55 +0000
committerRichard Maw <richard.maw@codethink.co.uk>2012-01-17 14:43:55 +0000
commit2de9abc5c9d40b3c716307d67d16146f823fd554 (patch)
tree6979db67934ddc8b564150b465846a383b428ff8 /gnulib/doc/posix-functions/ctime.texi
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+@node ctime
+@section @code{ctime}
+@findex ctime
+
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/ctime.html}
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function may overflow its internal buffer if an invalid year is passed.
+@item
+The @code{ctime} function need not be reentrant, and consequently is
+not required to be thread safe. Implementations of @code{ctime}
+typically write the time stamp into static buffer. If two threads
+call @code{ctime} at roughly the same time, you might end up with the
+wrong date in one of the threads, or some undefined string. There is
+a re-entrant interface @code{ctime_r}.
+@end itemize
+
+A more flexible function is @code{strftime}. However, note that it is
+locale dependent.