Re: autoconf problem with large files on HP-UX?

[Jim Meyering]

I've just applied and committed this patch.
Thanks again.

Paul Eggert <address@hidden> wrote:
| 2001-02-06  Paul Eggert  <address@hidden>
|
|       * acspecific.m4 (AC_SYS_LARGEFILE_TEST_INCLUDES): Don't reject
|       C++ compilers that are masquerading as C compilers, and that
|       incorrectly reject large integers.
|
| ===================================================================
| RCS file: acspecific.m4,v
| retrieving revision 2.49.3.0
| retrieving revision 2.49.3.1
| diff -pu -r2.49.3.0 -r2.49.3.1
| --- acspecific.m4     2001/01/24 08:51:20     2.49.3.0
| +++ acspecific.m4     2001/02/06 18:00:29     2.49.3.1
| @@ -376,7 +376,14 @@ with arguments. Remove this warning when
|  # -------------------------------
|  m4_define([_AC_SYS_LARGEFILE_TEST_INCLUDES],
|  address@hidden:@include <sys/types.h>
| -int a[[(off_t) 9223372036854775807 == 9223372036854775807 ? 1 : -1]];[]dnl
| + /* Check that off_t can represent 2**63 - 1 correctly.
| +    We can't simply define LARGE_OFF_T to be 9223372036854775807,
| +    since some C++ compilers masquerading as C compilers
| +    incorrectly reject 9223372036854775807.  */
| address@hidden:@define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
| +  int off_t_is_large[[(LARGE_OFF_T % 2147483629 == 721
| +                    && LARGE_OFF_T % 2147483647 == 1)
| +                   ? 1 : -1]];[]dnl
|  ])