- return (ll << 63 | ll >> 63 | ll < i | ll > i
- | llmax / ll | llmax % ll);]])],
- [ac_cv_type_long_long_int=yes],
+ return ((ll << 63) | (ll >> 63) | (ll < i) | (ll > i)
+ | (llmax / ll) | (llmax % ll));]])],
+ [dnl This catches a bug in Tandem NonStop Kernel (OSS) cc -O circa 2004.
+ dnl If cross compiling, assume the bug isn't important, since
+ dnl nobody cross compiles for this platform as far as we know.
+ AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[@%:@include <limits.h>
+ @%:@ifndef LLONG_MAX
+ @%:@ define HALF \
+ (1LL << (sizeof (long long int) * CHAR_BIT - 2))
+ @%:@ define LLONG_MAX (HALF - 1 + HALF)
+ @%:@endif]],
+ [[long long int n = 1;
+ int i;
+ for (i = 0; ; i++)
+ {
+ long long int m = n << i;
+ if (m >> i != n)
+ return 1;
+ if (LLONG_MAX / 2 < m)
+ break;
+ }
+ return 0;]])],
+ [ac_cv_type_long_long_int=yes],
+ [ac_cv_type_long_long_int=no],
+ [ac_cv_type_long_long_int=yes])],