diff options
Diffstat (limited to 'gcc/f/intdoc.in')
| -rw-r--r-- | gcc/f/intdoc.in | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/gcc/f/intdoc.in b/gcc/f/intdoc.in index 80046b730c2..f8c9b8261df 100644 --- a/gcc/f/intdoc.in +++ b/gcc/f/intdoc.in @@ -1282,15 +1282,13 @@ Returns the local time in seconds since midnight minus the value DEFDOC (SECOND_func, "Get CPU time for process in seconds.", "\ Returns the process's runtime in seconds---the same value as the UNIX function @code{etime} returns. - -This routine is known from Cray Fortran. ") DEFDOC (SECOND_subr, "Get CPU time for process@99@in seconds.", "\ Returns the process's runtime in seconds in @var{@1@}---the same value as the UNIX function @code{etime} returns. -This routine is known from Cray Fortran. @xref{Cpu_Time Intrinsic} +This routine is known from Cray Fortran. @xref{CPU_Time Intrinsic} for a standard equivalent. ") @@ -1445,6 +1443,10 @@ If the @var{@2@} argument is supplied, it contains 0 on success or a non-zero error code otherwise upon return. See @code{chdir(3)}. +@emph{Caution:} Using this routine during I/O to a unit connected with a +non-absolute file name can cause subsequent I/O on such a unit to fail +because the I/O library may reopen files by name. + Some non-GNU implementations of Fortran provide this intrinsic as only a function, not as a subroutine, or do not support the (optional) @var{@2@} argument. @@ -1455,6 +1457,10 @@ Sets the current working directory to be @var{@1@}. Returns 0 on success or a non-zero error code. See @code{chdir(3)}. +@emph{Caution:} Using this routine during I/O to a unit connected with a +non-absolute file name can cause subsequent I/O on such a unit to fail +because the I/O library may reopen files by name. + Due to the side effects performed by this intrinsic, the function form is not recommended. ") @@ -2039,6 +2045,12 @@ trailing blanks in @var{@1@} are ignored. DEFDOC (GETLOG, "Get login name.", "\ Returns the login name for the process in @var{@1@}. + +@emph{Caution:} On some systems, the @code{getlogin(3)} +function, which this intrinsic calls at run time, +is either not implemented or returns a null pointer. +In the latter case, this intrinsic returns blanks +in @var{@1@}. ") DEFDOC (HOSTNM_func, "Get host name.", "\ |